MEASURING OF AC SIGNALSµTAC400_SFERE_EN.pdf · 6. configuration of a digital output (rs485) 14 addressing 16 1. standard modbus functions (rtu) 17 2. modbus tcp functions 18 3. addresses

MEASURING OF AC SIGNALS

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Tel : 04 78 16 04 04 - Fax : 04 78 16 04 05 Tel. Internat. 33 4 78 16 04 05 - Fax Internat. 33 4 78 16 04 05

url : http://www.sfere-net.com - e-mail : [email protected]

Summary

Page 1

USE

2

1. RECEIPT OF THE INSTRUMENT & START UP 3 2. ORGANISATION OF THE FRONT FACE 3 3. LIST OF THE MEASURED PARAMETERS 4 4. MEANING OF THE VARIOUS ENERGY COUNTERS 5 5. ODD CASE OF THE SIGNED PARAMETERS 5 6. USE OF THE « CUT OFF » 6 7. LIST OF THE ERRORS SHOWN BY THE INSTRUMENT 6 8. CORRECTION OF THE WIRING 7

PROGRAMMING

8

1. CONNECTION TO A PC 9 2. ACCESS TO THE CONFIGURATION 10 3. CONFIGURATION OF THE MEASURES 10 4. CONFIGURATION OF THE RELAY OUTPUTS 11 5. CONFIGURATION OF AN ANALOG OUTPUT 13 6. CONFIGURATION OF A DIGITAL OUTPUT (RS485) 14

ADDRESSING

16

1. STANDARD MODBUS FUNCTIONS (RTU) 17 2. MODBUS TCP FUNCTIONS 18 3. ADDRESSES OF THE MEASURES 18

TECHNICAL FEATURES

24

1. GENERAL FEATURES 25 2. ELECTRICAL FEATURES 25 3. POSSIBLE OUTPUTS 26 4. DIMENSIONS 27

WIRING

28

1. WIRING RECOMMENDATIONS 29 2. WIRING OF THE POWER SUPPLY 29 3. WIRING OF A SINGLE PHASE NETWORK: « 1 PH » 30 4. WIRING OF A 3-PHASE UNBALANCED NETWORK WITH NEUTRAL : « 4W UNBA » 30 5. WIRING OF A 3-PHASE BALANCED NETWORK WITHOUT NEUTRAL : « 3W BAL » 31 6. WIRING OF A 3-PHASE BALANCED NETWORK WITH NEUTRAL : « 4W BAL » 31 7. WIRING OF A 3-PHASE UNBAL. NETWORK WITHOUT NEUTRAL, WITHOUT LEAK CURRENT 31 8. WIRING OF A 3-PHASE UNBALANCED NETWORK WITHOUT NEUTRAL, MEASUREMENT OF THE 3 CURRENTS

33

9. WIRING OF THE RELAY OUTPUTS 33 10. WIRING OF THE ANALOG OUTPUTS 34 11. WIRING OF THE DIGITAL OUTPUT RS485 34 ANNEXE 1: RE-PROGRAMMING OF THE CT/VT RATIOS IN MODBUS 35

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UUSSEE

Page 3

1. RECEIPT OF THE INSTRUMENT & START UP Check that the configuration of the instrument (as indicated on the case bottom label) corresponds to your order. Mount the instrument on a DIN rail. Connect the power supply (see the wiring diagrams). The tension LED lights up. The instrument now starts to measure, it has a standard configuration (except specific indications on your order). The instrument can now be programmed, preferably before connecting the measure signals. Now connect all the signals: see the wiring diagrams. If not specified, the communication parameters for the PC software or the digital output are the following: slave number = 250 speed = 9600 bauds without parity 1 stop bit 2. ORGANISATION OF THE FRONT FACE

IN CASE OF PROBLEM…

If the instrument does not light up: Check the presence of power supply (even for a self-powered instrument). If the instrument does not measure: Check the presence of the measure signals.

Check the programming. If the RS485 data link is not working: Cross the wires, check the wiring, the slave number and the speed. If the red LED blinks: the instrument has detected an error (caliber, wiring, programming... see p6)

Visualisation of the errors / communication Visualisation of the setting on tension

DIN rail

Page 4

3. LIST OF THE MEASURED PARAMETERS

1P

H

4W

BA

L

4W

UN

BA

L

3W

UN

BA

L 1

3W

UN

BA

L 2

3W

BA

L

N° Measured parameter

1 UL1-L3 (mesh voltage U13) X X X X X

2 UL1-L2 (mesh voltage U12) X X X X

3 UL2-L3 (mesh voltage U23) X X X X

21 UL1-N (single voltage UL1) X X X

22 UL2-N (single voltage UL2) X

23 UL3-N (single voltage UL3) X

4 IL1 (line current IL1) X X X X X X

5 IL2 (line current IL2) X X X

6 IL3 (line current IL3) X X X

24 PL1 (phase 1 active power PL1) X X

25 PL2 (phase 2 active power PL2) X

26 PL3 (phase 3 active power PL3) X

7 P (total active power P) X X X X X X

8 Q (total reactive power Q) X X X X X X

9 S (total apparent power S) X X X X X X

27 QL1 (phase 1 reactive power QL1) X X

28 QL2 (phase 2 reactive power QL2) X

29 QL3 (phase 3 reactive power QL3) X

10 F (frequency F) X X X X X X

11 cos ϕ (total power factor COS) X X X X X X

12 IN (leak current In) X X

30 cos ϕ L1 (power factor phase L1) X



13 Ea (active energy EA.o) X X X X X X

17 Er ind (reactive inductive energy Er.L) X X X X X X

19 Er cap (reactive capactive energy Er.c) X X X X X X

13+14 Ea out (active out energy, 6 digits ) X X X X X X

15+16 Ea in (active in energy, 6 digits) X X X X X X

17+18 Er ind (reactive inductive energy, 6 digits) X X X X X X

19+20 Er cap (reactive capacitive energy, 6 digits) X X X X X X

33 P10-15mn (average power 10/15min) X X X X X X

34 Q10-15mn (average power 10/15min) X X X X X X

35 P10-15mn max (max. value) X X X X X X

36 Q10-15mn max (max. value) X X X X X X

38 tangent ϕ (option) X X X X X X

44 THD U (the greatest THD of the 3 U phases) X X X X X X

45 THD IL (the greatest THD of the 3 IL phases) X X X X X X

NOTE: The power factor (PF: « cos ϕ ») is obtained by the calculation: P/S

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4. MEANING OF THE VARIOUS ENERGY COUNTERS:

• PROGRAMMING IN MODE RECEIVER

• PROGRAMMING IN MODE GENERATOR 5. ODD CASE OF THE SIGNED PARAMETERS: When the active power is drawn, its sign is positive. When the power is generated, its sign is negative. The powers are always transmitted with their sign by the digital data link. If the active power is <0 while the load is drawing (for example for an engine), the currents must be wired in the wrong sense. The wiring can be rectified (CAUTION do not disconnect the currents if the installation is running), otherwise the instrument can be programmed in mode generator.

P taken up > 0 Q taken up > 0

counts the energies active OUT and reactive inductive Counts the energies

Active IN and reactive cap.

The choice between an electrical or a mathematical COS is programmable

Counts the energies active OUT and reactive capacitive

Counts the energies active IN and reactive inductive

elec. cos<0 math. cos<0

elec. cos>0 math. cos>0

elec. cos<0 math. cos>0

elec. cos>0 math. cos<0

Generating inductive

Motor capacitive

Motor inductive

Generating capacitive

P- Q+ P+ Q+

P- Q- P+ Q-

P+ P-

Q-

Q+

counts the energies active OUT and reactive inductive Counts the energies

active IN and reactive cap.

The choice between an electrical or a mathematical COS is programmable

Counts the energies active OUT and reactive capacitive

Counts the energies active IN and reactive inductive

elec. cos<0 math. cos<0

elec. cos>0 math. cos>0

elec. cos<0 math. cos>0

elec. cos>0 math. cos<0

Motor inductive

Generating capacitive

Generating inductive

Motor capacitive

P- Q+ P+ Q+

P- Q- P+ Q-

P+ P-

Q-

Q+

Page 6

On the digital output, the sign of the cosine allows determinating the nature of the load or the sense of the current: - If the programmed COS type is electrical it allows knowing the sign of the reactive power. The COS

displays the nature of the load: L=inductive and C=capacitive - If the programmed COS type is mathematical it allows knowing the sign of the active power. The COS

displays the sense of the current: +=generating and - = receiving Example : say a COS = 0.85

- for an electrical COS the display will be L.85 or C.85 and the transmission RS +850 or –850. - for a mathematical COS the display will be 0.50 or -0.50 and the transmission RS +500 or –500.

6. USE OF THE « CUT OFF » The « cut off » is a programming option of the instrument which allows setting the display separately to 0 for small U and I values (see the chapter « programming of the CUT OFF »). Once the menu is validated, the instrument will measure the values on its inputs and enforce the display to 0 for any values lower than the « cut off » programmed in % of the caliber (1 or 5A, 100VL-N / 175VL-L or 330VL-N / 600VL-L). 7. LIST OF THE ERRORS

Err nr Types of errors Notes

0 Programme memory deleted Contact after sales

2 Wiring error Wrong wiring of the measure signals U / I Error in the phase ranks, 1 phase lost.

4 Current caliber overrange CTs not adapted

8 Voltage caliber overrange VTs not adapted – wiring error – error in the programming of the network type

16 Frequency out of range [> 70 Hz] Signals parasited or deformed – frequency too high

32 Configuration lost Re-programme the instrument

64 Calibration lost Return to the factory for re-calibrating

The red LED blinks in case of error, connect the PC software to analyse the error.

The wiring error should be used as a help, all errors will not be detected. The correct measurement of the powers and cosines will validate the wiring.

Page 7

8. CORRECTION OF THE WIRING In case of wiring error the wiring can be corrected by programming. The direction of the currents can be programmed (in case of reversion of the external CTs), the rank of the currents can be modified (the input measure can be chosen for IL1, IL2 and IL3), the rank of the voltages can be modified (U2 and U3 can be crossed).

EXAMPLES: UL1 is taken as a reference. It will not be corrected.

OF

F

OF

F

ON

ON

Display / Outputs

ADC

Dir. channel 1:

+/-

Dir. Channel 2:

+/-

Dir. Channel 3:

+/-

Position IL1: Channel 1/2/3



?

IL1 IL2 IL3 UL1 UL2 UL3

Terminals / Current inputs

Channel 2 Channel 1 Channel 3 Chan 1 Chan 2 Chan 3 N

ADC

Reversion U2 / U3

Terminals / Voltage inputs

E5 – E6 E7 – E8 E9 – E10 E1 E2 E3 E4

IL1

IL2 IL3

-IL2

Correction of the channel 2 direction

IL2

IL1 IL3

Correction of the currents: Position IL1 = chan.2 Position IL2 = chan.1

UL1

UL3 UL2

Correction of the voltages: Reversion U2 / U3

Page 8

PPRROOGGRRAAMMMMIINNGG

Page 9

PROGRAMMING BY PC SOFTWARE A detailed step by step information is given in the software help.

1.CONNECTION TO A PC

The connection with the PC is performed directly with the M4-USB converter, which is connected on the digital output of the µTAC400 (N1,N2,N3)

USB cable

Page 10

2. ACCESS TO THE CONFIGURATION From the software Supervision, choose the header « configuration ». Once the instrument is selected, the access to a detailed configuration is possible. The configuration is proponed in several groups: INPUT, MODBUS, OUTPUT, etc… 3. CONFIGURATION OF THE MEASURES

3.1. Choice of the measure network

3.2. Entering of the CT/VT ratios

3.3. Choice of the digital filtering

3.4. Choice of the mode

3.5. Programming of the cosine 3.6. De-validation of the diagnosis

3.7. Programming of the « cut off »

NETWORK

3W BAL

1PH : single-phase 3W BAL : 3-phase balanced without neutral 4W BAL : 3-phase balanced with neutral 3W UNBAL1 : 3-phase unbalanced without neutral, without leak current 3W UNBAL 2 : 3-phase unbalanced without neutral, meas. of the 3 currents 4W UNBAL : 3-phase unbalanced with neutral

CALIBER U

330 V

CALIBER I

5 A

Choice of the voltage caliber: 100VL-N / 175VL-L or 330VL-N / 600VL-L (caliber of the single voltages in 4 wire or the mesh voltages in 3 wire). And choice of the current caliber: 1 or 5A

FILTER

Nr 1

Choice of the digital filtering weight: OFF, Nr 1,Nr 2, Nr 3… Increase the value in case of unsteady measures.

MODE

Receiver

Choice of the mode receiver or generator: defines the direction of the current (180° rotation in the 4 quadrants diagram).

CUT-OFF I (%)

05.0

CUT-OFF U (%)

05.0

Programming of the current and voltage cut offs. It is the value below which the instrument will enforce the measure to 0. It is entered in percents of the caliber full scale.

PRIMARY TC

5.00

k

SECONDARY

TC

05.0

PRIMARY TP

500

1

Programming of the CT primary and its unit (1=unit,k=kilo.) Programming of the CT secondary, without unit

Programming of the VT primary and its unit (1=unit,k=kilo.) Programming of the VT secondary, without unit

SECONDARY

TP

500

TYPE COS

ELEC

Choice of the cosine type: Electrical or mathematical. Choice of the cosine centering: +/-1 or centered on 0.

OUTPUT

COS +/-1

DIAG

ON

Allows de-validating the measure errors (phase ranks, caliber oversteppings, frequen.) ON=validated OFF=inhibated

In the case of the network «3W UNBAL1» (3-phase unbalanced without neutral, without leak current) choose the CT which is not used.

I NOT WIRED

IL3

The maximum measurable power is 2000MW

IMPORTANT: programme the VT ratios in single voltage (if you have 15kV/100V VTs between lines, programme 8.33kV / 57.7V for the ratios)

Page 11

3.8. Integration of the powers 10 / 15 minutes « INTEG POWER » 4. CONFIGURATION OF A RELAY OUTPUT Each output can be configured either as alarm or as energy pulse.

4.1.Configuration in mode pulses:

This configuration can be accessed only for the counting of the energies.

• Procedure to be followed:

4.2. Configuration in mode setpoint (alarms):

2 modes can be combined with 2 types of safeties :

MODE PLAIN WITH 1 SETPOINT, LOW SAFETY:

Setpoint

Contact closed

Value of the parameter Contact open

The hysteresis is centered around the setpoint (0 to 15%).

MODE PLAIN WITH 1 SETPOINT, HIGH SAFETY:

Contact open

Value of the parameter

Contact closed

Setpoint

PARAMETER

EA. In

Choice of the parameter assigned to the output: (the name of the parameter appears).

VALUE IMP

1kW

Programming of the weight and unit of the pulses: from 1W to 1MW

WIDTH

400ms

Width of the pulses: 100ms , 200ms , 400ms 100 to 400ms

200 to 800ms min

TYPE OUTPUT

PULSE

Choice of the output type: PULSE

INTEG POWER

10 MINUTES

Choice of the powers integration period as time flows: 10 minutes or 15 minutes.

The hysteresis is centered around the setpoint (0 to 15%).

Page 12

• Procedure to be followed:

MODE WINDOW WITH 2 SETPOINTS, LOW SAFETY:

Setpoint 1 Setpoint 2

The hysteresis are centered around the setpoint (0 to 15%).

Contact open Contact open Contact closed


MODE WINDOW WITH 2 SETPOINTS, HIGH SAFETY:


Contact closed Contact closed Contact open

Setpoint 1 Setpoint 2

TYPE OUTPUT

ALARME

MODE

_|- 1S. Séc.B.

PARAMETER

U13

Choice of the output type: ALARME

Choice of the parameter to be watched.

Choice of the relay operating mode: 1 or 2 setpoints (mode window), high or low safety.

k

k

Sign of the setpoint (powers only + / - ). Value of the first setpoint and its unit: 1, k, M, G

DELAY

0s

HYSTERESIS (%)

2

Sign of the setpoint (powers only + / - ). Value of the second setpoint and its unit: 1, k, M, G In plain mode, this value will not be taken into account.

Choice of the relay switching delay.

THRESH 1

2.00

THRESH 2

3.00

Choice of the hysteresis assigned to the setpoint (in % of the setpoint value).

The hysteresis are centered around the setpoint (0 to 15%).

CAUTION: for the watching of the diagnosis (error in the phase ranks, 1 phase lost) programme a threshold at 1

Page 13

5. CONFIGURATION OF AN ANALOG OUTPUT

5.1. Operating mode of an analog output – General case: The outputs S1-S2 and S3-S4 are unidirectionnal, the outputs S5-S6, S7-S8 and S9-S10 are bidirectionnal. To configure a current output, it is necessary to define: - the type of output: 4-20mA , 0-20mA , -20+20mA , -5+5mA , -10+10mA , 0 5mA , 0 10mA - the n° of the parameter attributed to the output (see the list of the parameters) - the down and full scale for the measured parameter - the return value for saturation in case of error of the instrument N.B: With the option bidirectionnal output, on the setting on tension , the output will deliver -22mA during 1 second.

Example: output 4-20mA for Vr from 50kV to 500Kv. Example: output -20+20mA for Q from -10kW to +10kW.

5.2. Specific case of the power factor ( COS): The power factor can be transmitted on a current output in 3 different ways:

• MATHEMATICAL COSINE: the sign indicates the current direction (receiving / generating)

Example: the load can be either current receiving or generating, a cosine between –0.5 and +0.5 is transmitted on a 4-20mA output.

• ELECTRICAL COSINE CENTERED ON 0: The cosine sign indicates the nature of the load (capacitive or inductive)

Example: A network is measured with a cosine compensation by capacitors, the nature of the load is inductive but if you compensate too much you may obtain a capacitive load. The cosine will oscillate around +/- 1. A 4-20mA output is programmed for a cosine between -1 and +1.

To avoid the jumps from 4 to 20mA , use the following configuration:

• ELECTRICAL COSINE CENTERED ON +/-1 : The cosine sign still indicates the nature of the load (capacitive or inductive, but the current output will be centered on a +/-1 cosine).

The cosine oscillates around +/-1, the output gives jumps from 4 to 20mA. The use if a viewmeter is impossible, but the linear transfer function allows the use of a digital panel meter on the current output.

-1

+20mA

4mA

+1

12mA

0 CAPACITIVE LOAD INDUCTIVE LOAD

OUTPUT COS

0

TYPE COS

ELEC

TYPE COS

MATH

-0.5

+20mA

4mA

+0.5

500kV 50kV

4mA

20mA

+10kW

-20mA

-10kW

+20mA

-0.5 20mA 4mA

12mA

+0.5

COS=0

Page 14

Example: taking the previous example again, the 4-20mA output is programmed for a cosine from –0.5 to +0.5

When the cosine oscillates between +/-1 , the current output remains around 12mA. The unlinear transfer function does not allow the use of a digital panel meter on the current output.

5.3. Configuration of an output: procedure to be followed 6. CONFIGURATION OF A DIGITAL OUTPUT (RS485) [MODBUS]

6.1. General data:

Maximum length of the RS sequence: 209 bytes (or 100 measures) Make sure your card and communication software (PC/PLC) accept RS485 2 wire dialogues, and switch the polarisations on the PLC.

• Transmission format: - 1 start bit - 8 data bits - parity: without/even/odd - 1 or 2 stop bits

• Transmission speed: Programmable:

- 4800 bauds - 9600 bauds - 19200 bauds

• Slave number: Programmable from 1 to 250

• Interface: The instrument includes an internal RS485 (2 wire) card.

20mA

4mA

-1 -0.5 0 +0.5 +1

OUTPUT COS

+/-1

TYPE COS

ELEC

PARAMETER

IL1

RANGE

4/20mA

1

1

FOLD DOWN

22 mA

Choice of the measure to be transmitted

Choice of the output type: -20/+20, -10/+10, -5/+5, 0/20, 4/20, etc. (Positive scale only for the outputs S1-S2 and S3-S4)

Programming of the sign only for the powers Programming of the down scale and its unit 1, k, M, G

Programming of the sign only for the powers Programming of the full scale and its unit 1, k, M, G

Choice of the return value in mA from +22mA to -22mA, in case of measure error

LO RANGE PARA

2.00

HI RANGE PARA

3.00

The measures are encoded : - either in integer format (2 bytes)

and double integer for the energies, - or in 32 bits (4 bytes) format for all

the measures.

-0.5 20mA 4mA

12mA

+0.5

-1/+1 COS

Page 15

• Durations to be respected: - Query processing time: 75ms<Tt <130ms - Tr = 10ms min. - Query repeat time (in ms): (N = number of requested measures).

4800Bds: Td > 4N+168 9600Bds: Td > 2N+154 19200Bds: Td > N+147 Example: at 9600bds for 10 measures: Td > 174ms

6.2. Configuration of the output: how to proceed: For a quick reading of 12 measures on choice, the area of addresses 57 to 68 can be used to programme the 12 required consecutive measures. The following programming is given as example:

• Used MODBUS functions: - Function 3: Reading of N words - Function 6: Writing of 1 word - Function 7: Quick reading of the instrument type - Function 16: Writing of N words

• Exception codes: - N°1: Unknown function - N°2: Address incorrect - N°3: Data incorrect - N°8: Writing error - N°9: Area overlapping

query response query response query response Tr Tt Tr

Td

instrument n°1 instrument n°2 instrument n°3

Td

SLAVE

250

Choose the slave number attributed to the instrument (1-250).

Choose the number of stop bits: 1 bit or 2 bits

BIT STOP

1 bit

PARITY

SANS

Choice of the parity bit: WITHOUT, EVEN, ODD

FORMAT MEASURES

2-1-4-3

PARAMETER…

…

Choose the communication speed 4800, 9600, 19200 bauds

PARAMETER 1

IL1

Choice of the measures transmission format (see the chapter addressing hereafter)

Choose the 12 measures of the re-configurable area. (this allows the taking up in a single sequence of 12 consecutive measures on choice).

Programming of the other chosen measures Caution: an energy takes 2 locations

BAUD

9600bd

Page 16

AADDDDRREESSSSIINNGG

Page 17

1. STANDARD MODBUS FUNCTIONS (RTU) The measures of the instrument can be accessed:

- via the RS 485 with standard Modbus sequences, - via Ethernet (option F) on the port « data » with standard Modbus and TCP Modbus sequences.

In the case of the TCP Modbus, the slave number of the instrument is fixed at 1. 1.1. Modbus Function 03: reading of N words

Function 3: Reading of N words

Slave number

3 Address of the 1st word Number of words Checksum

MSB LSB MSB LSB CRC CRC DATA (6 bytes) CRC16 (2 bytes)

Response

Slave number

3 Nbr of bytes (2xN)

Value of the 1st word …

Value of the word N Checksum

MSB LSB MSB LSB CRC CRC

DATA (3+Nx2 bytes) CRC16 (2 bytes)

1.2 Modbus function 16: Writing of N words

Function 16: writing of N words

Slave number

16 1st word address Nbr of words (N) Nbr of

bytes (2xN)

Value of the N words Checksum

MSB LSB MSB LSB MSB LSB CRC CRC

DATA (7+Nx2 bytes) CRC16 (2 bytes)

Response

Slave number

16 Address of the 1st word Number of words (N) Checksum

MSB LSB MSB LSB CRC CRC DATA (6 bytes) CRC16 (2 bytes)

1-3. CRC16 calculation algorythm Example: Sequence 1 - 3 - 0 -75 - 0 - 2 - CRC16=180-29 (in decimal)

End

• Note 1: = exclusive or

• Note 2: poly = A001h

• Note 3: the CRC16 calculation applies to all bytes in the sequence (except CRC16)

• Note 4: CAUTION in the CRC16, the 1st sent byte is the LSB

Page 18

2. TCP MODBUS FUNCTIONS 2.1. Standard Modbus / TCP Modbus comparison A Modbus sequence is made up of the following elements: Standard Modbus: TCP Modbus : The TCP Modbus uses only the data area of the standard Modbus (without checksum – CRC) and adds a specific header. The instrument slave number is fixed at 1. 2.2. Specific TCP header: The header is made up of 6 bytes (0 to 5).

Byte Contents Note

0 Transaction Id. Defined by the customer station (requester)

1 2

Protocole Id. TCP Modbus = 0 3 4

Sequence length Calculated from byte 6 to the end of the sequence 5

3. ADDRESSES OF THE MEASURES 3.1. Formats 2-1/4-3, 4-3/2-1, 1-2/3-4 or 3-4/1-2 The value read in the 1st table gives the measure module on 4 significant ciphers. To know the unit and the decimal point of this measure, see the 2nd table.

measure format 2-1/4-3, 4-3/2-1, 1-2/3-4 or 3-4/1-2 Address Measure units

1-U13 (mesh voltage) 0 V, kV



4-IL1 (phase 1 line current) 3 A, kA



7-Total active power 6 W,kW,MW

8-Total reactive power 7 Var,kVar,Mvar

9-Total apparent power 8 VA,kVA,MVA

10-Frequency 9 Hz

11-Total COS (power factor: P/S) 10 -

12-Leak current In 11 A

13-Drawn active energy – bottom weight 12 Wh,kWh,MWh,GWh

14-Drawn active energy – top weight 13 Wh,kWh,MWh,GWh

15-Supplied active energy – bottom weight 14 Wh,kWh,MWh,GWh

16-Drawn active energy – top weight 15 Wh,kWh,MWh,GWh

17-Reactive inductive energy – bottom weight 16 Varh,kVarh,MVarh,GVarh

18-Reactive inductive energy – top weight 17 Varh,kVarh,MVarh,GVarh

19-Capacitive energy – bottom weight 18 Varh,kVarh,MVarh,GVarh

20-Capacitive energy – top weight 19 Varh,kVarh,MVarh,GVarh

21-UL1 (phase 1 single voltage) 20 V, kV

DATA CRC

TCP header DATA

Page 19



24-PL1 (phase 1 active power) 23 W,kW,MW



27-QL1 (phase 1 reactive power) 26 Var,kVar,Mvar



30-COSL1 (phase 1 power factor: P/S) 29 -



33-Average active power (10/15 min*) 32 W,kW,MW

34-Average reactive power (10/15 min*) 33 Var,kVar,Mvar

35-Highest active power average (10/15 min*) 34 W,kW,MW

36-Highest reactive power average (10/15min*) 35 Var,kVar,Mvar

37-diagnosis / measure errors 36 -

38-Tangent ϕ (option) 37 -

… … …

58-Chosen measure n° 1 57

59-Chosen measure n° 2 58 -

…

69-Chosen measure n° 12 68 -

… … …

125-Test measure = 12345 124 -

*10/15min = integration time of the measures (see the configuration of the measures) 3.2. Addresses of the measure units: The units and the decimal points depend only on the programmed CT and VT ratio. They do not vary during the operating, so this table does not need to be read permanently.

Decimal points and units of the measures Adr possible points / units

1-Dec. point (MSB) / Unit (LSB) U13 125 1,2,3 / 0,1



4-Dec. point (MSB) / Unit (LSB) IL1 128 1,2,3 / 0,1



7-Dec. point (MSB) / Unit (LSB) P 131 1,2,3 / 0,1,2

8-Dec. point (MSB) / Unit (LSB) Q 132 1,2,3 / 0,1,2

9-Dec. point (MSB) / Unit (LSB) S 133 1,2,3 / 0,1,2

10-Dec. point (MSB) / Unit (LSB) F 134 2 / 0

11-Dec. point (MSB) / Unit (LSB) COS 135 3 / 0

12-Dec. point (MSB) / Unit (LSB) In 136 1,2,3 / 0

13-Dec. point (MSB) / Unit (LSB) EA drawn–bottom weight 137 1,2,3 / 0,1,2,3

14-Dec. point (MSB) / Unit (LSB) EA drawn–top weight 138 1,2,3 / 0,1,2,3

15-Dec. point (MSB) / Unit (LSB) EA supplied–bottom weight 139 1,2,3 / 0,1,2,3

16-Dec. point (MSB) / Unit (LSB) EA supplied–top weight 140 1,2,3 / 0,1,2,3

17-Dec. point (MSB) / Unit (LSB) ER inductive–bottom weight 141 1,2,3 / 0,1,2,3

18-Dec. point (MSB) / Unit (LSB) ER inductive–top weight 142 1,2,3 / 0,1,2,3

19-Dec. point (MSB) / Unit (LSB) ER capacitive-bottom weight 143 1,2,3 / 0,1,2,3

20-Dec. point (MSB) / Unit (LSB) ER capacitive-top weight 144 1,2,3 / 0,1,2,3

21-Dec. point (MSB) / Unit (LSB) UL1 145 1,2,3 / 0,1



Page 20

24-Dec. point (MSB) / Unit (LSB) PL1 148 1,2,3 / 0,1,2



27-Dec. point (MSB) / Unit (LSB) QL1 151 1,2,3 / 0,1,2



30-Dec. point (MSB) / Unit (LSB) COSL1 154 3 / 0



33-Average active power (N minutes) 157 1,2,3 / 0,1,2

34-Average reactive power (N minutes) 158 1,2,3 / 0,1,2

35-Highest active power average (N minutes) 159 1,2,3 / 0,1,2

36-Highest reactive power average (N minutes) 160 1,2,3 / 0,1

37-diagnosis / measure errors 161 0 / 0

38-Tangent ϕ (optional) 162 1,2,3 / 0,1

… … …

58-Choice of measure n° 1 182 1,2,3 / 0,1


… … …


… … …

125-Dec. point (MSB) / Unit (LSB) Test measure (123.45 k) 249 2 / 1

1 / x = measure in resolution x 10: example P = 2534 1 / 2 corresponding to 253.4 MW 0 / x = measure without dec imal point: example diagnosis = 32 0 / 0 that is to say error N°32 point: 0: xxxx. 1: xxx.x 2: xx.xx 3: x.xxx unit: 0: x1 1: kilo 2: Mega 3: Giga

Example: CT ratio = 5kA / 1A, display = 5.00kA 5000 will be transmitted in the table of measures, and 3/1 in the table of the decimal points/units.

3.3. Format 32 bits:

The units and the decimal points are fixed, all the measures are encoded on 32 bits (double integer)

measure format 32 bits Address Measure units

1-UL1 (phase 1 single voltage) 0 V



4-U12 (mesh voltage) 6 V



7-IL1 (phase 1 current) 12 A



10-Total active power 18 W

11-Total reactive power 20 VAr

12-Total apparent power 22 VA

13-Total COS (power factor: P/S) 24 x100

14-Frequency 26 Hz x10

15-Drawn active energy (OUT) 28 kWh

16-Supplied active energy (IN) 30 kWh

17-Reactive inductive energy 32 kVArh

18-Reactive capacitive energy 34 kVArh

19-PL1 (phase 1 active power) 36 W



22-QL1 (phase 1 reactive power) 42 VAr

Addressing

Page 21



25-not used 48 -

26-not used 50 -

27-not used 52 -



30-COSL3 (phase 3 power factor: PS) 58 -

31-Average active power (N minutes*) 60 -

32-Average reactive power (N minutes*) 62 -

33-Highest active power average (N minutes*) 64 -

34-Highest reactive power average (N minutes*) 66 -

35-Diagnosis 68 -

36-Tangent ϕ (optional) 70 -

37-not used 72 -

38-not used 74 -

39-Chosen measure n° 1 76 Programmable measure 1












.. … …

62-Test measure 123.45 124 Kx100

3.4. Transmission of the harmonics (option H)

The harmonics are transmitted in bytes (8 bits), independently of the format of the measures.

Rank 1st byte Rank 2nd byte Address THD IL1 THD UL1 500

THD IL2 THD UL2 501

THD IL3 THD UL3 502

IL1 H 3 H 5 503 H 7 H 9 504

H 11 H 13 505

H 15 H 17 506

H 19 H 21 507

H 23 H 25 508

H 27 H 29 509

H 31 H 33 510

H 35 H 37 511

H 39 H 41 512

H 43 H 45 513

H 47 H 49 514

UL1 H 3 H 5 515 H 7 H 9 516

H 11 H 13 517

H 15 H 17 518

H 19 H 21 519

Addressing

Page 22

H 23 H 25 520

H 27 H 29 521

H 31 H 33 522

H 35 H 37 523

H 39 H 41 524

H 43 H 45 525

H 47 H 49 526

IL2 H 3 H 5 527

H 7 H 9 528

H 11 H 13 529

H 15 H 17 530

H 19 H 21 531

H 23 H 25 532

H 27 H 29 533

H 31 H 33 534

H 35 H 37 535

H 39 H 41 536

H 43 H 45 537

H 47 H 49 538

UL2 H 3 H 5 539 H 7 H 9 540

H 11 H 13 541

H 15 H 17 542

H 19 H 21 543

H 23 H 25 544

H 27 H 29 545

H 31 H 33 546

H 35 H 37 547

H 39 H 41 548

H 43 H 45 549

H 47 H 49 550

IL3 H 3 H 5 551

H 7 H 9 552 H 11 H 13 553

H 15 H 17 554

H 19 H 21 555

H 23 H 25 556

H 27 H 29 557

H 31 H 33 558

H 35 H 37 559 H 39 H 41 560

H 43 H 45 561

H 47 H 49 562

UL3 H 3 H 5 563

H 7 H 9 564

H 11 H 13 565 H 15 H 17 566

H 19 H 21 567

H 23 H 25 568

H 27 H 29 569

H 31 H 33 570

H 35 H 37 571

H 39 H 41 572

H 43 H 45 573

H 47 H 49 574

Addressing

Page 23

Example : On the instrument N°10 for IL1, we have 10% of harmonics 3, 5% of harmonics 5, 3% harmonics 7 and 0% of harmonics 9, 2 integers can be read at the address 503 :

Query: 10-3-1-247-0-2-CRC16 Response: 10-3-4-10-5-3-0-CRC16

3.5. Format of the measures

The format of the measures transmitted by the digital data link depends on the entered programming:

Format 2 – 1 / 4 – 3 MODBUS query of reading of EA OUT on the INSTRUMENT N°10: 10-3-0-12-0-2-CRC16 Response of the instrument: 10-3-4-byte2-byte1-byte4-byte3-CRC16

EA OUT= byte1+byte2.256+byte3.256²+byte4.2563 MODBUS query of reading of the frequency on the INSTRUMENT N°10: 10-3-0-9-0-1-CRC16 Response of the instrument: 10-3-2-byte2-byte1 -CRC16

FREQUENCY= byte1+byte2.256









FREQUENCY= byte1+byte2.256 The energy is transmitted with the same unit as the total powers. For the harmonics, the value of the harmonic is encoded in % in the form of an integer between 0 and 100.

Format 32 bits MODBUS query of reading of EA OUT on the INSTRUMENT N°10: 10-3-0-28-0-2-CRC16 Response of the instrument: 10-3-4-byte2-byte1-byte4-byte3-CRC16

EA OUT= byte1+byte2.256+byte3.256²+byte4.2563 MODBUS query of reading of the frequency on the INSTRUMENT N°10: 10-3-0-26-0-2-CRC16 Response of the instrument: 10-3-4- byte2-byte1-byte4-byte3-CRC16

FREQUENCY= byte1+byte2.256+byte3.256²+byte4.2563

In this format the decimal points and the units are fixed, there is no 2nd table to be read, you can see for example in the table 7.3.2 that the frequency is transmitted in Hz with 1 cipher after the point: the transmission will be 500 for 50.0Hz.

However the measures are on 32 bits instead of 16 for the other formats (except the energies which are always on 32 bits), hence the sequences will be longer.

3.6. Zero reset of the energy counters

In MODBUS, all the energy counters can be reset to zero: Writing of an integer with the value 8481 at the address 1080

Page 24

TTEECCHHNNIICCAALL FFEEAATTUURREESS

Technical features

Page 25

1. GENERAL FEATURES

Housing Self-extinguishing case of black UL94VO ABS. Format (H x L x D) 96 x 49 x 112 mm Mounting on DIN rail Protection Housing IP20 (with the terminals mounted). Connectings By plug-off screw terminals (wire section: 2,5 mm2). Indicators 2 to 4 LED. Programming by PC programme

2. ELECTRICAL FEATURES

POWER SUPPLY

Voltage Universal power supply: 20 to 270 VAC or 20 to 300VDC Power draw 6 VA max.

INPUTS

Voltages 2 programmable calibers UL-L=173VAC and 600VAC. Oversteppings 120% Currents 2 programmable calibers 1A and 5A : In=1.2A and 6A. Oversteppings 120% In Over load Permanent: 750V, 10A

During 10 s: 1000V, 50A Power draws Voltage inputs: 1MΩ resistance

Current inputs: < 0.2VA Test voltage 2kV, 50Hz /1min. Frequency 10 … 50 … 70Hz (in standard) Type of network Single or 3-phase balanced/unbalanced with or without neutral Thermic drifts <200ppm

MEASURES

Number of parameters 32 in basic version Accuracy rating Voltages, currents: 0.2 (IEC688-1) Powers: class 0.5 (IEC688-1) Active energy: class 1 (IEC62053-21) Reactive energy: class 2 (IEC62053-23) Option P : Active power: class 0.2 (IEC688-1) Active energy: class 0.5 (IEC62053-22) Reactive energy: class 1 (IEC62053-24) Measure cycle 40 ms for all network types Measuring method Fast simultaneous sampling of the 3 voltages and the 3 currents.

Digital calculation on 32 bits. Measurement of disturbed signals, sampling frequency 6.4kHz.

Harmonics analysis H up to rank 50 on the 6 channels. Digital filtering Various levels on choice by programming.

TEST AND OPERATING CONDITIONS

Reference T° 23°C Operating T° -10°C to 55°C (others on request) IEC 60068-2-1 and IEC 60068-2-2 … in damp area 40°C to 93% condense free dampness IEC 60068-2-30 Storage T° -25°C to 70°C IEC 60068-2-1 and IEC 60068-2-2 T° gradiant in storage 3°C/min from –20°C to +70°C IEC 60068-2-14 Relative dampness 5% to 95% without condensation IEC 60068-2-30 HF rayed field IEC 61000.4.3 level 3 Electrostatic discharge IEC 61000.4.2 level 3 RF conducted field IEC 61000.4.6 level 3 50Hz magnetic field IEC 61000.4.8 level 3

1,2/50µs shockwave IEC 61000.4.5 level 3 mode series/common

Fast transient IEC 61000.4.4 level 3 mode common GSM RF field ENV 50204 Generic standards immunity: IEC 61000-6-2 rejections: 61000-6-4

test standards: EN 55011 class A Vibration withstanding +/-150µm from 10 to 57 Hz and +/- 2G from 57Hz to 500Hz conform with 68-2-6 - CE marking -

Technical features

Page 26

3. POSSIBLE OUTPUTS

The instrument can include:

- 3 analog bidirectionnal outputs (S5-S6, S7-S8 and S9-S10) and 2 unidirectionnal outputs (S1-S2 and S3-S4).

- 2 or 4 relay outputs (setpoint or pulses). - 1 digital output RS485. - 1 Ethernet digital output - 1 PROFIBUS DP slave digital output

The relay outputs can be programmed either as alarm setpoint or as energy pulse – option R . Type of contact : potential free, galvanic partition 2.5KV Rated load : 5A – 250VAC Lifetime : 20 000 000 operations empty , 300 000 operations at 2A/250V

- Pulse output:

Width of the pulses : 100 to 400 ms (programmable) Maximum count rate : 4 to 1 pulses / second Weight of the pulses : on choice (programmable)

- Setpoint output: Setting of the setpoints : 0 to 100% of the measure range (programmable) Switching hysteresis : 0 to 15% of the setpoint (programmable) Time delay : 0 to 15s (programmable)

Bidirectionnal analog output – option A :

Galvanic partition : 2kV (1kV between outputs) Output signal : various combinations programmable (-/+20mA -/+10mA …). Scale setting : 0 to 100% of the measure range (programmable)

Admissible load : up to 600Ω (20mA) Resolution : 24000 points Accuracy : <0.1% of the full scale on -/+20mA (in relation to the display)

<0.2% on -/+5mA

Residual ripple : -/+2.5mV (dc) on 50Ω load Response time of the output : 50ms (<120ms input output)

Thermic drifts : <100ppm caliber –20/+20mA, <200ppm caliber 0/20mA Digital data link RS485 – option N :

Type : 2 wire (galvanic partition 2kV). Polarisation and termination : 2 jumpers on the rear face Speed : 4800 / 9600 / 19200 bauds Protocole : Modbus/Jbus RTU 8 bits with or without parity, 1 or 2 stop bits Format of the data : integer 16 bits

Ethernet output – option F :

Type : RJ45 (category 5 or upper cable recommended) Speed : 10 / 100 M. Protocole : TCP/IP (modbus)

Embarked web server for the configuration, the reading of the measures.

PROFIBUS output – option PB :

Type : PROFIBUS DP slave – DB9 connectics Speed : up to 12Mbauds

Technical features

Page 27

4. DIMENSIONS

112

1322

96

49 49

Page 28

WWIIRRIINNGG

Wiring

Page 29

1. WIIRING RECOMMENDATIONS

The input network ( UL1 , UL2 , UL3 , IL1 , IL2 , IL3 ) may carry significant disturbances, and they may disturb the complete processing chain. In order to avoid this the disturbance immunity can be improved efficiently by respecting a few simple rules:

• Do not connect too close: the input network and the instrument power supply wires.

• Do not connect too close: the input network and all the instrument output wires (pulse outputs, relay outputs ...)

• Use for all the outputs of the instrument shielded cables connected to the GND on both ends

In order to avoid any influence of the current take up on the voltage measure, connect the CT’s before the VT’s.

2. WIRING OF THE POWER SUPPLY

Load

Network

S1

Note: For an AC supply, the phase and the neutral can be connected indifferently on the terminals A1 and A2. For a DC supply, the + and the – can be connected indifferently on A1 and A2.

A1 A2

P +

N -

AC supply DC supply

Connector of the unidirectionnal analog outputs or the relay outputs

Connector of the bidirectionnal analog outputs or the relay outputs

Connector of the bidirectionnal analog output

Connector of the RS or RJ45 Ethernet or DB9 Profibus output

Status leds

Power supply

Measure inputs

Wiring

Page 30

3. WIRING OF A SINGLE PHASE NETWORK

4. WIRING OF A 3-PHASE UNBALANCED NETWORK WITH NEUTRAL:

without VT with CT Umax = 330V Imax = 5A

with VT with CT

with VT with CT Umax = 330V L-N Imax = 5A

with VT with CT

Respect the correct wiring: S1 corresponds to P1 and S2 corrresponds to P2. The secondaries S2 of the CTs must be set to the earth.

Lo

ad

Lo

ad

Lo

ad

Lo

ad

Wiring

Page 31

5. WIRING OF A 3-PHASE BALANCED NETWORK WITHOUT NEUTRAL:

6. WIRING OF A 3-PHASE BALANCED NETWORK WITH NEUTRAL

Lo

ad

Lo

ad

without VT without CT Umax = 600V L-L Imax = 5A

with VT with CT

without VT without CT Umax = 330V L-N Imax = 5A

with VT with CT


Lo

ad

Lo

ad

Wiring

Page 32

7. WIRING OF A 3-PHASE UNBALANCED NETWORK WITHOUT NEUTRAL, WITHOUT LEAK CURRENT:

7-1. IL3 not connected

7-2. IL2 not connected

without VT without CT Umax = 600V L-L Imax = 5A

with VT with CT

with VT with CT Umax = 600V L-L Imax = 5A

with VT with CT


Lo

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Lo

ad

Lo

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Lo

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Wiring

Page 33

8. WIRING OF A 3-PHASE UNBALANCED NETWORK WITHOUT NEUTRAL, MEAS. OF THE 3 CURRENTS:

9. WIRING OF THE RELAY OUTPUT

Witout VT Without CT Umax = 600V L-L Imax = 5A

With VT With CT


Pot. free contact 5A/250V




RE

LA

Y 1

R

EL

AY

2

S1

S2

S3

S4

RE

LA

Y 3

S5

S6

RE

LA

Y 4

S7

S8

Lo

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Lo

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Wiring

Page 34

10. WIRING OF THE ANALOG OUTPUTS 11. WIRING OF THE DIGITAL DATA LINK RS485

- The Zo end of line resistor on the master and the end of line slave allows reducing the influence of the reflections in the lines. For speeds <9600 bauds the resistor is unnecessary, from 1000m at 9600 bd and 700m at 19200 bd it is compulsory.

- Use preferably shielded cables to reduce the influence of the environment. Connect the earth to both ends of the cable shielding, and the GND to one of the ends.

- In case of communication problem: reverse A and B polarities on the master. Make sure the master emission arrives on the wires of the instruments.

- If necessary connect a Zo (120 ohm) resistor on the end of line instrument. - CAUTION: always polarise the lines at the level of the master.

S5

S6

I +

-

Lr

< 600 Ω (20 mA)

I +

Lr

< 600 Ω (20 mA)

S1

S2

Bidirectionnal outputs Unidirectionnal outputs

S7

S8

I +

-

Lr

< 600 Ω (20 mA)

S9

S10

I +

-

Lr

< 600 Ω (20 mA)

-

S3

S4

Lr

< 600 Ω (20 mA)

I +

-

Notes:

• In 2 wire, the master emission driver must be validated only if it emits. This operation is performed at the level of the software if it offers a 4/2 wire selection and in the RS485 interface using a micro-switch which will validate the emission driver with the signal RTS (or DTR).

GND A B

RS485 / interface

Zo

GND A B

Instrument n°1

N1 N2 N3

PC / PLC

Transmission line Earth (EMC GND)

Wiring

Page 35

ANNEXE 1 : RE-PROGRAMMING OF THE CT/VT RATIOS AND THE NETWORK TYPE / CALIBER IN MODBUS:

MODBUS ADDRESS VALUE TYPE 1000 Type of network / Voltage caliber

Type of network = 1st sent byte Voltage caliber = 2nd sent byte

Integer 16 (byte 1 – byte 2)

1002 VT primary module Integer 16 (LSB 1st)

1003 Dec. Point / unit of the VT primary Decimal point = 1st sent byte

Unit = 2nd sent byte


1006 CT primary module Integer 16 (LSB 1st)

1007 Dec. Point / unit of the CT primary Decimal point = 1st sent byte

Unit = 2nd sent byte


1080 Access code Integer 16

Decimal point byte: 0=no decimal point 1=1 cipher after the point 2=2 ciphers after the point 3=3 ciphers after the point Unit byte: 0=no unit 1=in kilos Use the Modbus writing functions 6 or 16: 1)—WRITING CODE: With an unsigned integer send 34181 to the address 1080 with the function writing of 1 word: Writing sequence: slave number - 16 - 4 - 56 - 0 - 1 - 2 - 133 - 133 - CS32 CAUTION: on the PLCs which do not manage unsigned integers, you must send the equivalent value in negative: -31355 to the address 1080 2a)—CT PRIMARY: To programme the primary of the CTs, programme the module (integer1) and then the unit/decimal point (integer2). For example to programme 20A: programme 20 at the address 1006 and then 0 at the address 1007 (which will give 20A with neither decimal point nor unit) Writing sequence integer 1: slave number - 16 - 3 - 238 - 0 - 1 - 2 - 20 - 0 - CS32 Writing sequence integer 2: slave number - 16 - 3 - 239 - 0 - 1 - 2 - 0 - 0 - CS32 BEWARE of the rank of the bytes inside the integer: send the LSB first: 20-0, if you send 0-20 the programming will not work! If you wish to programme 100A: programme 100 at the address 1006 and then 0 at the address 1007 beware of the rank of the bytes: Writing sequence integer 1: slave number - 16 - 3 - 238 - 0 - 1 - 2 - 232 - 3 - CS32 Writing sequence integer 2: slave number - 16 - 3 - 239 - 0 - 1 - 2 - 0 - 0 - CS32 2b)—VT PRIMARY + UNIT: To programme the primary of the VTs, programme the module (integer1) and then the unit/decimal point (integer2). For example to programme 20kV: programme 20 (20-0) at the address 1002 and then 256 (0-1) at the address 1003 (this will give 20 k) Writing sequence integer 1: slave number - 16 - 3 - 234 - 0 - 1 - 2 - 20 - 0 - CS32 Writing sequence integer 2: slave number - 16 - 3 - 235 - 0 - 1 - 2 - 0 - 1 - CS32 BEWARE of the rank of the bytes inside the integer: send the LSB first: 20-0, if you send 0-20 the programming will not work! Likewise for the position of the unit: send 0-1

Wiring

Page 36

2c)-TYPE OF NETWORK / VOLTAGE CALIBER: The network type (1st byte) and the voltage caliber (2nd byte) are programmed inside the same 16 bits integer. Byte network type: 0=single phase 1=3-phase balance 3wire 2=3-phase balanced 4wire 3=unbalanced 3wire 2CTs 4=unbalanced 3wire 3CTs 5=unbalanced 4W Byte voltage caliber: 0=100VL-N/175VL-L 1=330VL-N/600VL-L For example: to programme a 3-phase 4 wire network with a voltage caliber 330/600V: Integer writing sequence: slave number - 16 - 3 - 232 - 0 - 1 - 2 - 5 - 1 - CS32 3)—CLOSURE CODE Send 257 to the address 1080 with the function writing of 1 word: Writing sequence: slave number - 16 - 4 - 56 - 0 - 1 - 2 - 1 - 1 - CS32 4)-CHECKING If necessary you can check that the programming has well been taken into account. For this purpose simply launch a reading sequence (Modbus function 3) at the same Modbus address as for the writing. Example of the reading of the network type and the voltage caliber: Reading of 1 word (2 bytes) at the address 1000: Query: slave number-3-3-232-0-1-CRC16 Response: slave number-3-2-network type-U caliber-CRC16

Documents

MEASURING OF AC SIGNALSµTAC400_SFERE_EN.pdf · 6. configuration of a digital output (rs485) 14 addressing 16 1. standard modbus functions (rtu) 17 2. modbus tcp functions 18 3. addresses