Siemens S7-1200 - Page 915

Technical specifications
A.8 Analog signal modules (SMs)
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
915
Table A- 155 Wiring diagrams for the analog input/output SM
SM 1234 AI 4 x 13 Bit / AQ 2 x 14 bit (6ES7 234-4HE32-0XB0)
Note: Connectors must be gold. See Appendix C, Spare Parts for
order number.
Table A- 156 Connector pin locations for SM 1234 AI 4 x 13 Bit / AQ 2 x 14 bit (6ES7 234-4HE32-
0XB0)
Pin
X10 (gold)
X11 (gold)
X12 (gold)
X13 (gold)
1
L+ / 24 VDC
No connection
No connection
No connection
2
M / 24 VDC
No connection
No connection
No connection
3
GND
No connection
No connection
No connection
4
AI 0+
AI 2+
No connection
AQ 0M
5
AI 0-
AI 2-
No connection
AQ 0
6
AI 1+
AI 3+
No connection
AQ 1M
7 AI 1- AI 3- No connection AQ 1
Note
Unused voltage input channels should be shorted.
Unused cu
rrent input channels should be set to the 0 to 20 mA range and/or disable broken
wire error reporting.
Inputs configured for current mode will not conduct loop current unless the module is
powered and configured.
Current input channels will not operate unless external power is supplied to the transmitter.