Signals From Channel (Db21 - Siemens SINUMERIK 840Di Function Manual

Detailed Description
2.14 Reference point approach (R1)
DB21, ...
DBX33.0 Referencing active
Edge evaluation: yes
Signal state 1 or The channel-specific referencing was started using the interface signal:
edge change DB21, ... DBX1.0 (activate referencing)
0 → 1 and the successful start was acknowledged using the interface signal:
DB21, ... DBX33.0 (referencing active).
Channel-specific referencing is operational.
Signal state 0 or •
edge change
•
1 → 0
•
Signal irrelevant Spindles
for ...
Corresponding to .... DB21, ... DBX1.0 (activate referencing)
2.14.2

Signals from channel (DB21, ...)

DB21, ...
DBX36.2 All axes that have to be referenced are referenced
Edge evaluation: no
Signal state 1 or All axes that must be referenced (linear axes and rotary axes) of the channel are referenced.
edge change
The machine data:
0 → 1
MD20700 $MC_REFP_NC_START_LOCK (NC start inhibit without reference point)
is zero.
If two position measuring systems are connected to an axis, that would prevent an NC start, then
the active one must be referenced so that the axis is considered to have been referenced.
An NC Start command for parts program processing is only accepted when this signal is present.
Axes that have to be referenced are axes, if:
MD34110 $MA_REFP_CYCLE_NR _ = -1
and the axis is not in the parked position (position measuring system inactive and the controller
enable withdrawn).
Signal state 0 or One or more axes of the channel have not been referenced.
edge change
1 → 0
Special cases, The spindles of the channel have no effect on this interface signal.
errors, ......
Corresponding to .... DB31, ... DBX60.4 (referenced/synchronized 1)
DB31, ... DBX60.5 (referenced/synchronized 2)
2-116
Signal(s) updated: cyclic
Channel-specific referencing has been completed
Axis-specific referencing running
No referencing active
Signal(s) updated: cyclic
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0