Chapter 6 Control TerminalsCP2000 
 
6-3
  When the photo-coupler is using internal power supply, the switch connection for Sink 
and Source as below: 
MI-DCM: Sink mode 
MI-+24V: Source mode 
  When the photo-coupler is using external power supply, please remove the short circuit 
cable between the +24V and COM terminals. The connection mode is Sink mode or 
Source mode according to the below: 
The “+” of 24V connecting to “COM: Sink mode 
The “-“ of 24V connecting to COM: Source mode