Signals To Channel (Db21 - Siemens SINUMERIK 828D Function Manual

19.6.3

Signals to channel (DB21, ...)

DB21, ...
DBX0.4 Activate single block
Edge evaluation: no
Signal state 1 or In AUTOMATIC and MDA modes, the operator must enable processing of each individual part
edge change program block of the part program selected in the channel by reactivating NC START.
0 → 1
Signal state 0 or No effect.
edge change
1 → 0
Special cases, •
errors, ......
•
•
Corresponding to ... DB21, ... DBX35.3 (program status interrupted)
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
Corresponding 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
Corresponding to ... DB21, ... DBX32.3 (action block active)
DB21, ... DBX32.6 (last action block active)
DB21, ... DBX33.4 (block search active)
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Signal(s) updated: Cyclic
In the case of active tool offset, intermediate blocks are inserted, when necessary. These blocks
must also be enabled using NC START.
In a series of G33 blocks, a single block is only operative if "dry run feed" is selected.
In the case of a decoding single block, calculation blocks are not processed in the single step.
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Channel Number
19.6 Mode group, channel, program operation, reset response
> Issue NC START to continue program" notifies the user
Z1: NC/PLC interface signals
1675