Plc Actions After Block Search - Siemens SINUMERIK 840D sl Function Manual

Effect
● All channel axes are moved to their search position that was collected during the block
search.
● $P_EP == "accumulated search position of the channel axis (WCS)"
Block search type 4: REPOS behavior
After block search type 4 (block search with calculation to block end point), no automatic
repositioning is triggered during the period described by the beginning and end by the REPOS
command:
● Begin: NC/PLC interface signal DB21, ... DBX32.6 = 1 (last action block active)
● End: Continuing program execution with NC start.
The start point of the approach movement are the current positions of the channel axes at the
time of the NC start command. The end point results from the other transversing movements
programmed in the part program.
For block search type 4, no approach movement is generated by the NC.
Effect:
● After exiting the ASUP, the system variable $P_EP (programmed end position) contains
the actual position, at which the channel axes were positioned by the ASUP or manually
(mode: JOG).
$P_EP == "current actual position of the channel axis in the WCS
9.7.2.2

PLC actions after block search

If all action blocks have been executed by the NC and actions by the PLC, e.g. starting an
ASUP to perform a tool change, or of the operator, e.g. restore, are possible, the following
channel-specific NC/PLC interface signal is set:
● DB21, ... DB32.6 = 1 (last action block active)
Parameterizing the time of alarm output
To inform the operator that NC start is required in the channel to continue program execution,
alarm 10208 "Continue program with NC start" is displayed.
Basic Functions
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
K1: Mode group, channel, program operation, reset response
9.7 Block search, types 1, 2, and 4:
483