Z1: NC/PLC interface signals
19.10 Reference point approach (R1)
Basic Functions
1698 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
19.10 Reference point approach (R1)
19.10.1 Signals to channel (DB21, ...)
DB21, ...
DBX1.0 Activate referencing
Edge evaluation: yes Signal(s) updated: cyclic
Signal state 1 or
edge change
0 → 1
The channel specific referencing is started with the interafce signal:
DB21, ... DBX1.0 (Activate referencing)
.
The control acknowledges the successful start with the interface signal:
DB21, ... DBX33.0 (Referencing active)
With the channel specific referencing each machine axis, which is allocated to a channel, can be
referenced (control internals are simulated by traversing keys plus/minus).
Using the axis-specific machine data:
MD34110 $MA_REFP_CYCLE_NR (axis sequence for channel-specific Referencing)
can determine in which sequence the machine axes are referenced.
If all the axes entered in REFP_CYCLE_NR have reached their reference point,
the interface signal:
DB21, ... DBX36.3 (all axes present)
is set.
Application
example(s)
If the machine axes are to be referenced in a particular sequence, there are the following
possibilities:
• The operator must observe the correct sequence when starting.
• The PLC must check the sequence when starting or define it itself.
• The function channel specific referencing will be used.
Corresponding to .... DB21, ... DBX33.0 (Referencing active)
DB21, ... DBX36.2 (all reference point required axes are referenced)
DB21, ...
DBX33.0 Referencing active
Edge evaluation: yes Signal(s) updated: cyclic
Signal state 1 or
edge change
0 → 1
The channel specific referencing was started with the interface signal:
DB21, ... DBX1.0 (activate referencing)
and the successful start was acknowledged with the interface signal:
DB21, ... DBX33.0 (referencing active)
.
The channel specific referencing is operational.
Signal state 0 or
edge change
1 → 0
• channel specific referencing is completed.
• axis specific referencing is operational
• no referencing active
Signal irrelevant for
...
Spindles
Corresponding to .... DB21, ... DBX1.0 (activate referencing)
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