Technical specifications
A.9 Digital signal modules (SMs)
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1455
7 DI a.3 DI b.3 2L 4L
9 DI a.5 DI b.5 DQ a.5 DQ b.5
Table A- 129 Wiring diagrams for the digital input V DC/output SMs
SM 1223 DI 8 x 24 V DC, DQ 8 x 24 V DC
(6ES7223-1BH32-0XB0)
SM 1223 DI 16 x 24 V DC, DQ 16 x 24 V DC
(6ES7223-1BL32-0XB0)
① For sinking
inputs, connect "-"
to "M" (shown).
For sourcing inputs,
connect "+" to "M".
Table A- 130 Connector Pin Locations for SM 1223 DI 8 x 24 V DC, DQ 8 x 24 V DC (6ES7223-
1BH32-0XB0)
2 M / 24 V DC No connection No connection No connection
4 DI a.0 DI a.4 DQ a.0 DQ a.4