I am attempting to interface an accessory to a Mazak VTC-160B with a Mazatrol Fusion 640M control. I am trying to use the DPRNT command in a macro to send tool numbers to our unit.
The customer's programmer showed me the DPRNT (looks just like Fanuc's) and we tried it. The control accepted the command sequence and appeared to execute it, but no data comes out the RS232 port.

Going through the param manual shows a series of DPRxxx params, but they don't seem to be accesable through the usual screen sequences.

Any thoughts on how to make this work? Is it an option, or is there some parameter that needs to be set somewhere?

Thanks
Marc