Siemens SINUMERIK 828D Function Manual

Z1: NC/PLC interface signals
19.6 Mode group, channel, program operation, reset response
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
1675
19.6.3 Signals to channel (DB21, ...)
DB21, ...
DBX0.4 Activate single block
Edge evaluation: no Signal(s) updated: Cyclic
Signal state 1 or
edge change
0 → 1
In AUTOMATIC and MDA modes, the operator must enable processing of each individual part
program block of the part program selected in the channel by reactivating NC START.
Signal state 0 or
edge change
1 → 0
No effect.
Special cases,
errors, ......
• 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.
Corresponding to ... DB21, ... DBX35.3 (program status interrupted)
DB21, ...
DBX0.5 Activate M01
Edge evaluation: no Signal(s) updated: Cyclic
Signal state 1 or
edge change
0 → 1
Activation of program control "Conditional stop"M01 is requested.
Signal state 0 or
edge change
1 → 0
Activation of program control "Conditional stop" M01 is not requested.
Corresponding to ... DB21, ... DBX24.5 (M01 selected)
DB21, ... DBX32.5 (M0/M01 active)
DB21, ...
DBX1.6 PLC action completed
Edge evaluation: no Signal(s) updated: Cyclic
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 <
Channel Number > Issue NC START to continue program" notifies the user
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
edge change
0 → 1
PLC action is completed.
Signal state 0 or
edge change
1 → 0
PLC action is not yet completed.
Corresponding to ... DB21, ... DBX32.3 (action block active)
DB21, ... DBX32.6 (last action block active)
DB21, ... DBX33.4 (block search active)

Siemens SINUMERIK 828D Specifications

General

Brand	Siemens
Model	SINUMERIK 828D
Category	Control Systems
Language	English