CPUs, Memory Cards, Memory Submodules, Interface Submodules

Pin Assignments

Given in the following table are the pin assignments of the 15-pin

of the PG

subminiature D-type connector in the front plate of the PG submodule:

Submodule

 

Pin Designation

Current Remarks Direction

8

15

9

1

²: From partner to CPU

³: From CPU to partner

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Housing/GND/GNDext

±RxD VPG + 5 V_

+ 24 V from bus

0 V GND/GNDint

+TxD

± TxD Housing/GND/GNDext

+RxD

24 V GND

20mA GND/GNDint

20mA VPG + 5 V_

0V GND/GNDint

³

²

³

²

²Current return

³Current source, transmitter

³Current source, receiver

5-96

System Manual

C79000-G8576-C199-06

Page 236
Image 236
Siemens S5-135U/155U appendix Pin Assignments, Pin Designation Current Remarks Direction