Siemens SINUMERIK 840D sl Function Manual page 1602

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Z1: NC/PLC interface signals
19.6 Mode group, channel, program operation, reset response (K1)
DB11
DBX0.4
Mode change disable
Edge evaluation: No
Signal state 1 or
The currently active mode (JOG, MDA or AUTOMATIC) of the mode group cannot be changed. The
edge change
machine functions that can be selected within a mode group can be changed.
0 → 1
Signal state 0 or
The mode of the mode group can be changed.
edge change
1 → 0
DB11
DBX0.5
Mode group stop
Edge evaluation: No
Signal state 1 or
An NC Stop is activated for all the channels of the mode group. The channel status of all the active
edge change
channels changes to the channel status "interrupted". All of the channels in channel status "reset"
0 → 1
remain in the channel status "reset". Programs that are running at this point are immediately inter‐
rupted (at the earliest possible point, even within a block) and the program status changes to "stop‐
ped". All the moving axes of the mode group are decelerated according to their acceleration charac‐
teristics without contour violation. The program can be restarted with NC Start. None of the spindles
of that mode group are affected.
Signal state 0 or
Channel status and program execution are not influenced.
edge change
1 → 0
Special cases, er‐
All the axes of a mode group that are not triggered by a program or a program block (e.g. axes traverse
rors, ... ...
because traverse keys are being pressed on the machine control panel) decelerate to rest with mode
group stop.
1602
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions

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