
B-63323EN-1/03 5.AUTOMATIC OPERATION
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operation from the tool withdrawal signal TRESC being set to 1 to
the same signal being set to 0 is referred to as tool withdrawal
mode.
Tool withdrawal mode includes all the retraction, withdrawal, and
repositioning operations.
When tool withdrawal mode is set, tool withdrawal mode in-
progress signal TRACT is set to 1, to indicate to the PMC that tool
withdrawal mode is set.
During movement for retraction, the tool withdrawal axis move
in-progress signal TRMTN is set to 1. Upon positioning to the
retraction position, TRMTN is set to 0, and tool withdrawal and
return completion signal TRSPS is set to 1.
During movement
(MEM, D, T)
Tool withdrawal signal
(TRESC)
Tool withdrawal mode in-progress
(TRACT)
Tool withdrawal axis move in-progress signal
(TRMTN)
Movement for retraction
Tool withdrawal and return completion signal
(TRSPS)
Fig. 5.10 (b) Timing Chart for Retraction (Involving Movement)
(2) After the mode is switched to manual mode, the tool can be moved
for tool change operation by manual operation (jog feed,
incremental feed, manual handle feed, or manual numeric
command). This operation is referred to as withdrawal. A tool
withdrawal path is automatically stored by the CNC. Up to ten
tool withdrawal paths are stored automatically.
When manual withdrawal is performed, TRSPS is set to 1. During
manual movement along an axis, TRMTN is set to 1.
Automatic operation mode
(MEM, D, T)
Manual operation mode
(J, H, S)
Tool withdrawal mode in-progress signal
(TRACT)
Tool withdrawal axis move
in-progress signal
(TRMTN)
Movement for retraction along an axis
Tool withdrawal and return completion signal
(TRSPS)
1 with the retract state maintained
Fig. 5.10 (c) Timing Chart for Withdrawal