Anbindung von Firebug Engine IO / Kompaktinjektor Schmalz

Good day to all,

I am new to programming a UR5e.
We have mounted an IO extension from Firebug to be able to control 5 compact injectors from Schmalz.
Both devices are PNP.
Unfortunately it does not work as I want.
If we connect the compact injectors as specified and activate a digital output, all 4 injectors are controlled.
Does anyone also have a Firebug IO extension in use and can help me further please.
Many thanks for the support