Fanuc Series 15i/150i-MA (Programming) Operators Manual

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The increment system uses least input increment (for input) and least
command increment (for output). The least input increment is the least
increment for programming the travel distance. The least command
increment is the least increment for moving the tool on the machine.
Both increments are represented in mm, inches, or deg.
There are five types of increment systems, as shown in Table2.3 (a).
One of the five types can be set for each axis by using bits 0 (ISA), 1
(ISC), 2 (ISD), and 3(ISE) of Parameter No. 1012.
The least input increment is in either metric or inch units. One can be
selected using a G code (G20, G21) or setting parameter.
The least command increment is in either metric or inch units
depending on the machine tool. Set metric or inch in bit 1 (INM) of
parameter No. 1002 in advance.
The metric and inch systems cannot be used together. There are
functions that cannot be used for axes with different unit systems
(circular interpolation, cutter compensation, and so forth).
IS-D and IS-E are optional.
For the increment system, see the manual provided by the machine tool
builder manual.
Table2.3 (a) Increment system
Name of
Least input
Least command
Maximum stroke
0.01 mm 0.01 mm 999999.99 mm
0.001 inch 0.001 inch 99999.999 inchIS-A
0.01 deg 0.01 deg 999999.99 deg
0.001 mm 0.001 mm 99999.999 mm
0.0001 inch 0.0001 inch 9999.9999 inchIS-B
0.001 deg 0.001 deg 99999.999 deg
0.0001 mm 0.0001 mm 9999.9999 mm
0.00001 inch 0.00001 inch 999.99999 inchIS-C
0.0001 deg 0.0001 deg 9999.9999 deg
0.00001 mm 0.00001 mm 9999.99999 mm
0.000001 inch 0.000001 inch 999.999999 inchIS-D
0.00001 deg 0.00001 deg 9999.99999 deg
0.000001 mm 0.000001 mm 999.999999 mm
0.0000001 inch 0.0000001 inch 99.9999999 inchIS-E
0.000001 deg 0.000001 deg 999.999999 deg

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