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Date: 21-Nov-2002 Sheet of File: D:\PrjCir\RS232-TTY\M232TTY.SCH Drawn By:
U14N37
13
10
11
8
12
9
14
7
C1+1
C2+4
GN
D15
C1-3
VCC
16
R1
T1
T2
R2
C2-5
V- 6
V+ 2
V- 6
D1MAX232
U24N37
6
9
2
7
11
13
12
15
AG115UAG115U
+15V
+15V
For PLC S5-110U, S5-95U, S5-115U
PG Interface (DB15 socket)
VL2 Green
VL1 Red
R1300K
R2300K
R34.7K
Vin1
GN
D2
Vout 3
A1L05 VD2
Z15.6V
VD11N4001 VD3
VD4162738495
XS1
DB9
C5100mF 10V
C11mF 10V
C21mF 10V
+9-15V
-9-15V
C41mF 10V
C31mF 10V
IBM PC
1 1
2
Virgiliev
RS232- TTY Converter
Both LEDs should light constantly when there is no communiction (it's OK state)Apreciate LED should flash, when transmit/receive is active
VD2,3,4 should handle 30V 20mA (Shottky is better)All LEDs should handle 20mA
+5V
+5V
St. Petersburg, Russian Federation [email protected]
External Power source20 ma minimum output
LEDs VL1, VL2 should handle 20 maOptocupler's LEDs and output transistors also should handle 20ma
Don't make this connection! It will destroy isolation between PLC and PC with unpredictable results !!!