Software Stroke Limit Function - Mitsubishi Electric MELSEC iQ-R Series User Manual

Software stroke limit function

In the "software stroke limit function" the address established by a machine home position return is used to set the upper and
lower limits of the moveable range of the workpiece. Movement commands issued to addresses outside that setting range will
not be executed.
In the Motion module, the "feed current value" and "machine feed value" are used as the addresses indicating the current
position. However, in the "software stroke limit function", the address used to carry out the limit check is designated in "[Pr.14]
Software stroke limit selection". Refer to the following for details on the "feed current value" and "machine feed value".
Page 52 Confirming the current value
The upper and lower limits of the moveable range of the workpiece are set in "[Pr.12] Software stroke limit upper limit value"/
"[Pr.13] Software stroke limit lower limit value".
Differences in the moveable range
The following drawing shows the moveable range of the workpiece when the software stroke limit function is used.
RLS
Software stroke limit (lower limit)
The following drawing shows the differences in the operation when "[Md.20] Feed current value" and "[Md.21] Machine feed
value" are used in the moveable range limit check.
■Conditions
Assume the current stop position is 2000, and the upper stroke limit is set to 5000.
[Md.20] Feed current value
[Md.21] Machine feed value
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Workpiece movable range
Movable range
2000
2000
Stop position
search engine
FLS
Software stroke limit (upper limit)
5000
5000
Upper stroke limit
8 CONTROL SUB FUNCTIONS
8.3 Functions to Limit the Control
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