553BTechnical specifications
A.3 CPU 1212C
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05
679
A.3.4
Wiring diagrams
Table A- 37 CPU 1212C AC/DC/Relay (6ES7 212-1BD30-0XB0)
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".
Table A- 38 CPU 1212C DC/DC/Relay (6ES7 212-1HD30-0XB0)
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".