Siemens SIMATIC S7-1200 - A.16.1.4 Pinout of the D-sub socket of the CM 1243-5

Technical specifications
A.16 Communication interfaces
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1533
Technical specifications
Dimensions and weights
• Width
• Height
• Depth
• 30 mm
• 100 mm
• 75 mm
Weight
• Net weight
• Weight including packaging
• 134 g
• 171 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.
Note
The CM
1243-5 (PROFIBUS master module) must receive power from the 24 V DC sensor
supply of the CPU.
A.16.1.4
Pinout of the D-sub socket of the CM 1243-5
PROFIBUS interface
Table A- 242 Pinout of the D-sub socket
Pin
Description
Pin
Description
1 - not used - 6 VP: Power supply +5 V only for bus terminating
resistors;
not for supplying external devices
2
- not used -
7
- not used -
3
RxD/TxD-P: Data line B
8
RxD/TxD-N: Data line A
4
CNTR-P: RTS
9
- not used -
5
DGND: Ground for data signals and VP
Housing
Ground connector