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Instructions in
MGROUPS.SYS
December 2001
Canceling block scan
If block scan is cancelled, it is for possible for the NC status and PLC status
not to match. A macro can be entered in the NC MACRO.SYS after the
codeword STARTUPCANCEL= for this. This macro is always called when
block scan is not ended with RESTORE MACHINE STATUS. This macro brings the
NC into concordance with the actual condition of the machine (traverse range,
spindle, etc.).
MP7681
M/S/T/Q transfer to the PLC during block scan
Format:
%xxxx
Input:
Bit 0:
0: Transfer M functions to the PLC during block scan.
1: Collect M functions and transfer them to the PLC after block
scan.
Bit 1:
0: Transfer T code to the PLC during block scan.
1: Transfer last T code to the PLC after block scan.
Bit 2:
0: Transfer S or G code to the PLC during block scan.
1: Transfer S or G code to the PLC after block scan.
Bit 3:
0: Transfer FN19 outputs to the PLC during block scan.
1: Transfer last FN19 outputs to the PLC after block scan.
M4161
M/S/T/Q transfer after block scan
GROUP=
You divide M functions into groups. After a block scan, the last programmed
M function in a group is transferred to the PLC.
Example: GROUP=M3,M4,M5
SPECIAL=
You define all M functions that are not defined in a group, and that should be
sent to the PLC after a block scan.
Example: SPECIAL=M19,M22,M25
MFIRST=
MLAST=
You define two M functions to be sent to the PLC at the start and end of an
output sequence after a block scan. This enables the PLC program to
recognize that a sequence of M/S/T/Q strobes that was collected during the
block scan is being transferred. You can omit these instructions if you do not
need this information.
Example: MFIRST=M80, MLAST=M81
Display and Operation
Set
Reset
NC
NC
6 – 297
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