Siemens SINUMERIK 840D sl Function Manual page 545

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Auxiliary function: M1 (conditional stop)

Overriding the parameterized output behavior

The parameterized output behavior of the auxiliary function M1 is overridden by the output

behavior defined in the following machine data:

MD20800 $MC_SPF_END_TO_VDI, Bit 1 (subprogram end / stop to PLC)

Part program blocks without traverse movement

In a part program block without a traverse movement, all auxiliary functions are output in a

block immediately, irrespective of their parameterized output behavior.

Basic logic functions: Auxiliary Function Output to PLC (H2)

Function Manual, 11/2006, 6FC5397-0BP10-2BA0

The auxiliary function M01 (conditional stop) is always output to the PLC. A quick

acknowledgement is ineffective, because M01 is permanently assigned to the first

auxiliary function group and is therefore always output at the end of the block.

The auxiliary function M01 (conditional stop) is only output to the PLC, if the function:

"Programmed stop" is activated via the HMI user interface.

In the case of a quick acknowledgement, the M1 is output to the PLC during the motion.

While the function is not active, this does not interrupt continuous-path mode.

Supplementary conditions

3.2 Output behavior

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