July 2013 8.1 Display and operation 1245
During the block scan, PLC positioning commands are included in calculation
only if they are also executed. The TOOL CALL block normally initiates PLC
positioning commands for tool change. If you want these positioning
commands to be calculated in the block scan:
In MP951.x, enter the absolute position with respect to the machine datum.
The values for MP951.x can be assumed with the "actual position capture"
key.
Activate the calculation for the specific axes with MP7450.
With flexible tool-pocket coding in the central tool file (see "Tool changer" on
page 1565), the change of pocket number in the tool file must be prevented
during block scan if the TOOL CALL blocks are not collected:
Set M4542.
The block scan can be interrupted by a programmed STOP or with M06,
whereby you can have the programmed dwell time included:
With MP7680, bits 3 and 4, select the parameters for the block scan.
With MP7451.x, define the feed rate for returning to the contour.
If an NC program block is interrupted in Single Block mode or by a STOP block
and the positions of NC axes are changed, the NC program can be restarted
at the changed positions. If in OEM.SYS STRICTREPOS = YES, the function for
restoring the position is activated (see "OEM.SYS" on page 1701).
If you change the tool data in the PLC, update them with M4538, or change
or update them with an NC macro, then the new tool data cannot be
correctly offset in the block scan.
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