Siemens SIMATIC S7-1200

Technical specifications
A.9 Communication interfaces
Easy Book
330 Manual, 03/2014, A5E02486774-AF
Technical specifications
Power supply / external
• minimum
• maximum
24 V
• 19.2 V
• 28.8 V
Current consumption (typical)
• from 24 V DC
• from the S7-1200 backplane bus
• 100 mA
• 0 mA
Effective power loss (typical)
• from 24 V DC
• from the S7-1200 backplane bus
• 2.4 W
• 0 W
Power supply 24 VDC / external
• Min. cable cross section
• Max. cable cross section
• Tightening torque of the screw terminals
• min.: 0.14 mm
2
(AWG 25)
• max.: 1.5 mm
2
(AWG 15)
• 0.45 Nm (4 lb-in)
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.
PROFIBUS interface
Table A- 62 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