Siemens SIMATIC S7-1200

Technical specifications
A.16 Communication interfaces
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1531
Technical specifications
Weight
• Net weight
• Weight including packaging
• 115 g
• 152 g
*
)
The current load of an external consumer connected between VP (pin 6) and DGND (pin 5) must not exceed a maximum
of 15 mA (short-circuit proof) for bus termination.
A.16.1.2
Pinout of the D-sub socket of the CM 1242-5
PROFIBUS interface
Table A- 240 Pinout of the D-sub socket
Pin
Description
Pin
Description
1
- not used -
6
P5V2: +5V power supply
2
- not used -
7
- not used -
3
RxD/TxD-P: Data line B
8
RxD/TxD-N: Data line A
4
RTS
9
- not used -
5 M5V2: Data reference potential (ground
DGND)
Housing Ground connector