K1: Mode group, channel, program operation, reset response
9.7 Block search
Basic Functions
508
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Block search type 4 and part program command
REPOS
After block search type 4 (block search with calculation at block end point) no automatic repositioning is initiated
during the following period of time by the part program command
REPOS
:
• Start: NC/PLC interface signals: DB21,... DBB32, Bit6 (last action block active) == 1
• End: Continuing the part program processing per NC START,.
The start point of the approach movement is represented by the current axis 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 ASUB, the system variable $P_EP thus provides the actual position, on which the channel
axes of the ASUB were positioned (or manual (mode: JOG).
$P_EP == "current actual position of the channel axis"
9.7.2.2
PLC actions after block search
To allow activation of PLC actions (starting of ASUBs, call-up of PLC functions) after the end of the block search
at a defined point, there is the NCK/PLC interface signal:
DB21, ... DB32.6 (last action block active) == 1
This means that all action blocks are processed and that actions are possible by the PLC (ASUB, FC) or the
operator (overstoring, mode change after JOG/REPOS). This allows the PLC to perform another tool change, for
example, before the start of the transversing movement.
By default, alarm 10208 is output at this moment to notify the operator that another NC START is needed to
continue program execution.
In combination with alarm 10208, the following interface signals are set:
DB21, ... DBX36.7 (NCK alarm with processing stop)
DB21, ... DBX36.6 (channel-specific NCK alarm is present)
PLC-controlled alarm triggering
The setting by which alarm 10208 is only triggered after ending the PLC action, is done via machine data:
MD11450 $MN_SEARCH_RUN_MODE, Bit 0 = 1
Bit
Value
Meaning
0
1
With the change of the last action block after a block search, the following takes
place:
• Execution of the part program is stopped
• DB21, ... DBB32.6 (last action block active) = 1
• Alarm display: Alarm 10208 only if the following applies:
DB21, ... DBX1.6 (PLC action ended) == 1
Содержание SINUMERIK 828D Turning
Страница 34: ...Basic Functions 34 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 146: ...A3 Axis Monitoring Protection Zones 2 6 Data lists Basic Functions 146 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 328: ...F1 Travel to fixed stop 6 5 Data lists Basic Functions 328 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 816: ...K2 Axis Types Coordinate Systems Frames 10 9 Data lists Basic Functions 816 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1198: ...P4 PLC for SINUMERIK 828D 14 6 Function interface Basic Functions 1198 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1752: ...Appendix 20 2 Overview Basic Functions 1752 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...
Страница 1774: ...Glossary Basic Functions 1774 Function Manual 09 2011 6FC5397 0BP40 2BA0 ...