Decoder stop (@714)

The interpreter offers the option to execute a decoder stop in the NC program. In this case the interpreter waits until a certain external event occurs. Execution of the NC program does not continue until this event has taken place.

A decoder stop can be used, for instance, to switch block skipping on or off from the PLC, or to re-assign R parameters.

Two events are available for continuing processing:

• Acknowledgment of an M-function
• SEC task is empty

Acknowledgment of an M-function

Decoding of the NC program is interrupted until the M-function, which is programmed immediately prior to the decoder stop, is acknowledged. In other words, the M-function must be of type "handshake".

Sample 1:

N10...
N20 M43 (M-function with handshake)
N30 @714 (decoder stop)
N40 ... 

SEC task is empty

The decoder stop does not necessarily have to be programmed in conjunction with an M-function. If the SEC task runs out of travel commands, an event is sent to the interpreter. This event causes the interpreter to start up again.

The decoder stop must not be programmed with active tool compensation or circular smoothing, as these will then no longer function.