Hello. I'm currently doing my internship working with some 1500 and ET200.
Our client has chosen some RQ and DQmodules, butafter reading the manual,Icannotseeany clear difference.

DQ 4x24VDC/2A ST
RQ 4x24VUC/2A CO ST

Two examples.
What'sthe difference between both?

Thanks 

Hi,

DQ = Digital Output

RQ = Relais Output

Regards
Christoph