CPUs, Memory Cards, Memory Submodules, Interface Submodules

Pin Assignments Shown in the following figure are the pin assignments of the 15-pin

of the SINEC L1 subminiature D-type connector in the front plate of the SINEC L1

Submodulessubmodule:

8

15

9

1

Pin Designation

1Housing/GND/GNDext

2± RxD

3VPG + 5 V_

4+ 24 V from bus

524 V ground

6+ TxD

7± TxD

8Housing/GND/GNDext

9+ RxD

1024 V ground

1120 mA

1224 V ground

1320 mA

14VPG + 5 V_

1524 V ground

²: from partner to CPU

³: from CPU to partner

Current Remarks

Direction

³

²

³

²

²Current return

³Current source, transmitter

³Current source, receiver

System Manual

5-119

C79000-G8576-C199-06

Page 259
Image 259
Siemens S5-135U/155U appendix Submodulessubmodule, Pin Designation