
2.PREAPARATIONS FOR OPERATION B-63783EN-1/01
- 304 -
2.3.2 Stored Stroke Check 1
General
When the tool tries to exceed a stored stroke check, an alarm is
displayed and the tool is decelerated and stopped.
When the tool enters a forbidden area and an alarm is generated, the
tool can be moved in the reverse direction from which the tool came.
Parameters (Nos. 5220, 5221 or Nos. 5260, 5261) set boundary.
Outside the area of the set checks is a forbidden area. The machine tool
builder usually sets this area as the maximum stroke.
Signal
Stored stroke check select signal EXLM<G172#0>
[Classification] Input signal
[Function] Selects stroke check 1-I (parameter Nos. 5220 and 5221) or stroke
check 1-II (parameter Nos. 5260 and 5261).
[Operation] When this signal is set to 1, stroke limit 1 is checked using parameter
No. 5260 and No. 5261 instead of No. 5220 and No. 5221. Stored
stroke limit switching is performed for all axes at the same time. This
signal is valid only when bit 3 (LMS) of parameter No. 5201 is set to 1.
Axis direction dependent stored stroke limit switch signal
+EXL1<G384#0>, +EXL2<G392#0>, ...
-EXL1<G384#1>, -EXL2<G392#1>, ...
[Classification] Input signal
[Function] Switches between stroke limit 1-I (parameter No. 5220 and No. 5221)
and stroke limit 1-II (parameter No. 5260 and No. 5261) for each axis
direction.
[Operation] When this signal is set to 1, the CNC operates as described below.
(1) +EXL1, +EXL2, ...
Stroke limit 1 (+ side) is checked using parameter No. 5260
instead of No. 5220.
(2) -EXL1, -EXL2, ...
Stroke limit 1 (- side) is checked using parameter No. 5261 instead
of No. 5221.
Stroke check external setting signals
+LM1<G384#2>, +LM2<G392#2>, ...
-LM1<G384#3>, -LM2<G392#3>, ...
[Classification] Input signal
[Function] Change the values of the parameters governing the stroke check (5220
and 5221).
[Operation] When this signal is set to 1, the CNC operates as described below.
(1) +LM1, +LM2, ...
Parameter No. 5220 is rewritten to set the machine coordinates
existing at signal input time as stroke limit values.
(2) -LM1, -LM2, ...
Parameter No. 5221 is rewritten to set the machine coordinates
existing at signal input time as stroke limit values.