July 2013 8.1 Display and operation 1249
Delay time for the
change signals (M/
S/T)
MP7444 allows you to define the time for the output of the change signals M/
S/T after a positioning movement. This enables you to reduce the machining
time by avoiding filter run times. It is not always necessary to wait until the
filter run times have been completed (e.g. switch-on of cooling water). The
delay time can be deactivated in MP7444, if required.
MP7444 Delay time for the change signals (M/S/T)
Input: 0: Previous behavior, change signal after complete filter run
time
1: Change signal if the nominal feed rate reached the value 0
before the actual value (formed by the filters) did.
2: Change signal if the nominal feed rate reached the value 0
before the actual value (formed by the filters) did, and an
additional delay until the actual value reaches the time window
the first time.
Instructions in
MGROUPS.SYS
GROUP =
You divide M functions into groups. After a block scan, the last programmed
M function in a group is transferred to the PLC. An M function can be entered
in up to eight groups. During block scan, the M function is collected for all
groups in which it occurs, and is then considered during restoration. However,
this could lead to such M functions being executed more than once when
restoring the machine status. This function only makes sense if the ORDER =
PRIO option has not been entered.
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
REMAIN = OUTPUT
All M functions that are not defined in MGROUPS.SYS are transferred during
the block scan to the PLC. If you do not enter this instruction such M functions
are ignored.
You must use REMAIN = OUTPUT in the following functions:
Datum shift with M4132
PLC positioning except with TOOL CALL
Traverse range switchover with M4135, if MP7490 = 1
Switchover spindle 1/spindle 2 with Module 9175
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