Siemens SINUMERIK 840Di Function Manual page 1955

DB21, ...
DBX0.5 Activate M01
Edge evaluation: no
Signal state 1 or Activation of program control "Conditional stop" M01 is requested.
edge change
0 → 1
Signal state 0 or Activation of program control "Conditional stop" M01 is not requested.
edge change
1 → 0
Corresponds to .... DB21, ... DBX24.5 (M01 selected)
DB21, ... DBX32.5 (M0/M01 active)
DB21, ...
DBX1.6 PLC action completed
Edge evaluation: no
At the end of the block search, concluding action blocks are executed:
DB21, ... DBX32.3 (action block active) == 1 AND
DB21, ... DBX32.6 (last action block active) == 1
Alarm "10208 Channel <
that he must reactivate NC START to resume the part program starting from the target block.
If other actions are to be executed by the PLC user program prior to the NC START (e.g., tool
change), Search mode can be parameterized as follows:
MD11450 $MN_SEARCH_RUN_MODE = 1
Output of alarm delayed until the existing signal is reset.
Signal state 1 or PLC action is completed.
edge change
0 → 1
Signal state 0 or PLC action is not yet completed.
edge change
1 → 0
Corresponds to .... DB21, ... DBX32.3 (action block active)
DB21, ... DBX32.6 (last action block active)
DB21, ... DBX33.4 (block search active)
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2.9 Mode group, channel, program operation, reset response (K1)
Signal(s) updated: cyclic
Signal(s) updated: cyclic
Channel Number
> Issue NC START to continue program" notifies the user
Detailed Description
2-91