My program includes the following code:
Code:
DEF STRING[124] MY_MSG 
... 
MY_MSG = "*** BLAH BLAH BLAH ***" 
... 
MSG(MY_MSG) 
M00
The intention is to display a message to the operator, then pause the program to allow action to be taken before resuming the program.

Occasionally the message is displayed as expected, but usually my message is masked by an error message: '600607: SPI-LK,feed stop', which I think is a manufacturer message, not a Siemens message.

My message is revealed if I press the 'Feed Start' button, which acts as Feed Enable.

Is this standard behaviour on these machines? It would be strange to be unable to pause machining with a programmed message displayed.

Thanks for any advice,

brickie