Siemens SIMATIC S7-1200 - Page 1469

Technical specifications
A.10 Analog signal modules (SMs)
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1469
Table A- 156 Connector pin locations for SM 1234 AI 4 x 13 Bit / AQ 2 x 14 bit (6ES7234-4HE32-
0XB0)
Pin
X10 (gold)
X11 (gold)
X12 (gold)
X13 (gold)
1
L+ / 24 V DC
No connection
No connection
No connection
2 M / 24 V DC No connection No connection No connection
3
Functional Earth
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 current 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.