Hey

I am new to fanuc, and i want to DPRNT some information to a memory card. The problem is, that my machining program is on the memory card, and i use a sub program to call my machining program to my main program.
But i want to dprnt some information when i am running the sub program (witch is in the memory card)
When i use a dprnt inside that sub program i have this alarm "Fanuc Alarm 1808 DEVICE DOUBLE OPENED" .
Anyone knows if it is possible to dprnt at the same time/ inside a sub program from the memory card?

Thanks