Page top

page-top

Omron uses cookies to improve your experience on this website. By continuing to use the website, you hereby agree to our Privacy and Cookie Policy

Lead Contents

Sinking and Sourcing Outputs of CPM2C PLC

FAQ No. FAQ00439

Primary Contents

Question

What is the difference between CPM2C Programmable Controllers CPU Units with sinking outputs and sourcing outputs?

Answer

With sinking outputs, current flows in the following order:
"Positive power supply line" to "Load" to "CPM2C" to "Negative power supply line". This is the same as for an NPN transistor.

With sourcing outputs, current flows in the following order:
"Positive power supply line" to "CPM2C" to "Load" to "Negative power supply line". This is the same as a PNP transistor.

The device being output to will determine whether a sinking or sourcing output should be used.