Hello,
if you have euromap protocol - connector on both, and the robot or machine was already used before (so you dont know history) you have to check the connection of each individual signals once again.

SO take protocol and on the machine signal screen check with electrician, how the euromap is connected and if it provides ok signals.
Then do same on robot.

This can be one of the mistakes that some "clever predecessor" may change the signal connection so they dont match standard euromap 67 protocol anymore.

this happend to me personally before.
J.