Wiring Diagrams - Siemens SIMATIC S7 System Manual

553BTechnical specifications
A.2 CPU 1211C
A.2.4

Wiring diagrams

Table A- 21
Table A- 22
670
CPU 1211C AC/DC/Relay (6ES7 211-1BD30-0XB0)
CPU 1211C DC/DC/Relay (6ES7 211-1HD30-0XB0)
① 24 VDC Sensor Power
Out
For additional noise
immunity, connect "M"
to chassis ground even
if not using sensor
supply.
②
For sinking inputs,
connect "-" to "M"
(shown).
For sourcing inputs,
connect "+" to "M".
① 24 VDC Sensor Power
Out
For additional noise
immunity, connect "M"
to chassis ground even
if not using sensor
supply.
② For sinking inputs,
connect "-" to "M"
(shown).
For sourcing inputs,
connect "+" to "M".
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05