Siemens S5-135U/155U User Manual
Page 259
Advertising
5-119
System Manual
C79000-G8576-C199-06
Shown in the following figure are the pin assignments of the 15-pin
subminiature D-type connector in the front plate of the SINEC L1
submodule:
Pin
Designation
Current
Direction
Remarks
1
Housing/GND/GND
ext
2
– RxD
³
8
15
3
VPG + 5 V_
8
15
4
+ 24 V from bus
5
24 V ground
6
+ TxD
²
7
– TxD
³
8
Housing/GND/GND
ext
9
1
9
+ RxD
²
1
10
24 V ground
²
Current return
11
20 mA
³
Current source, transmitter
12
24 V ground
13
20 mA
³
Current source, receiver
14
VPG + 5 V_
15
24 V ground
²
: from partner to CPU
³: from CPU to partner
Pin Assignments
of the SINEC L1
Submodules
CPUs, Memory Cards, Memory Submodules, Interface Submodules
Advertising