Hello,
Problem is missing signal in outputs for welding machine in setup / map application .. sorry i don't know write it form head and don't have access to this kind of robot anymore.
Because you must setup it in I/O Map in application section there is something lire dry run etc usually we give them some $din and in these inputs connect 24v permanently .. when it will be right you dont must press it at all..
Thank you so much Vladarius,
It is happened.I removed sign of WELD ACT in SETUP PAGE. 
Hi, the signal that must be activated is Process YES command. This signal corresponds to $IN412. There is a Application page in IO_MAP, there you select Direction-->Output and the set the Process Yes command to an input comming from PLC already mapped before.
Then you use this signal to enable/disable dry runs from the hmi, and the check for errors by operators, for instance.
Regards,
