
2.PREPARATIONS FOR OPERATION B-63943EN-1/02
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2.3.2 Stored Stroke Check 1
Overview
A machine movable range is set with coordinates in the machine
coordinate system in parameters. If the machine attempts to move
beyond the range, it is decelerated and stopped and an alarm is
displayed.
This function is enabled after manual reference position return is
performed after power-on.
It can be used instead of an overtravel limit switch (hardware
component).
When both functions are used, both are valid.
Unlike an overtravel limit switch, this function checks whether the
position at which the machine is stopped after decelerated from the
current position is beyond the range.
The stroke check 1 release signal common to all axes can be set to 1
so that the control unit does not make stroke check 1.
(X1, Y1, Z1, ...)
(X2, Y2, Z2, ...)
The forbidden area is shaded.
Explanation
Parameters (Nos. 1320, 1321 or Nos. 1326, 1327) set boundary.
Outside the area of the set limits is a forbidden area. The machine tool
builder usually sets this area as the maximum stroke.
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.
At this time, a signal (overtravel alarm signal) can be output to the
PMC if bit 6 (OTS) of parameter No. 1301 is set to 1. In addition,
when the tool enters the forbidden area during manual operation, the
signal (overtravel alarm signal) can be output to the PMC without
generating the alarm by setting bit 1 (NAL) of parameter No. 1300 to
1. With this parameter setting, the alarm is generated when the tool
enters the forbidden area during automatic operation.
Signal
Stored stroke check 1 select signal EXLM<Gn007#6>
[Classification] Input signal
[Function] Selects stroke check 1-I (parameter Nos. 1320 and 1321) or stroke
check 1-II (parameter Nos. 1326 and 1327).
[Operation] When this signal is set to 1, checks stroke check 1 on the basis of
parameter Nos. 1326 and 1327,instead of parameter Nos. 1320 and
1321. The parameter values are used for all axes.
If the bit 2 (LMS) of parameter No.1300 is set to 1, this signal is
enabled.