
1.CONTROLLED AXIS NC FUNCTION B-63942EN/02
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1.23 INCREMENT SYSTEM
Five types of increment systems are available as indicated in the table
below, and can be chosen from by parameter setting.
Table 1.23 (a) Increment system
Name of
increment system
Least input increment
Least command
increment
0.01 mm 0.01 mm
0.001 inch 0.001 inch
IS-A
0.01 deg 0.01 deg
0.001 mm 0.001 mm
0.0001 inch 0.0001 inch
IS-B
0.001 deg 0.001 deg
0.0001 mm 0.0001 mm
0.00001 inch 0.00001 inch
IS-C
0.0001 deg 0.0001 deg
0.00001 mm 0.00001 mm
0.000001 inch 0.000001 inch
IS-D
0.00001 deg 0.00001 deg
0.000001 mm 0.000001 mm
0.0000001 inch 0.0000001 inch
IS-E
0.000001 deg 0.000001 deg
The least command increment is either metric or inch depending on
the machine tool. Set metric or inch to the parameter INM.
For selection between metric and inch for the least input increment, G
code (G20 or G21) or a setting parameter selects it.
By parameter setting, a least input increment 10 times greater than a
least command increment can be set as indicated in the table below.
Table 1.23 (b) Increment system
Name of
increment system
Least input increment
Least command
increment
0.01 mm 0.001 mm
0.001 inch 0.0001 inch
IS-B
0.01 deg 0.001 deg
0.001 mm 0.0001 mm
0.0001 inch 0.00001 inch
IS-C
0.001 deg 0.0001 deg
0.0001 mm 0.00001 mm
0.00001 inch 0.000001 inch
IS-D
0.0001 deg 0.00001 deg
0.00001 mm 0.000001 mm
0.000001 inch 0.0000001 inch
IS-E
0.00001 deg 0.000001 deg
NOTE
When the increment system is IS-A or pocket
calculator type decimal point programming is used,
a least input increment 10 times greater than a
least command increment cannot be set.