WaitConv instruction

Good Mornings guys

I ´ve a strange problem with a robot, the robot is a P250 with controller R30iB Version 9.10(Paint tool)

The customer use the instruction waitconv(), Fanuc instruction present in TP but If the robot is waiting on Waitconv instruction for too long it freeze.

What is very strange is the instruction is not present in Paint tool manual and fanuc advise against it,

Has someione ad problem or the same issue with this instruction?

thanks

hi I don ´t know,It is an instruction the operator can select from the programming menu, like wait for or if then , It come with the Paint tool options.