GSK 988T, User Manual

Page: 23 / 416

Chapter
Ⅰ
Programming Fundamentals
9
Programming
Ⅰ
1.3.2 Increment system
Increment system includes least input increment (input) and least command increment (output).
Least input increment is the least unit of programming movement distance. Least command
increment is the least unit of tool movement on the machine tool. Their unit: mm, inch or degree.
Increment systems are separately IS-B and IS-C. Bit 1 of NO. 1004 decides to select IS-B or IS-C. Bit
1 (ISC) setting of No.1001 is applied to all axes. For example: increment system of all axes is set to
IS-C when the parameter selects IS-C.
Table 1-3
（
b
）
increment system IS-B
Least input increment Least command increment
mm input
0.001mm （ diameter ）
0.001mm
（
radius
）
0.001deg
0.0005mm
0.001mm
0.001deg Metric machine
Inch input
0.0001inch
（
diameter
）
0.0001inch （ radius ）
0.001deg
0.0005inch
0.001inch
0.001deg
mm input
0.001mm （ diameter ）
0.001mm
（
radius
）
0.001deg
0.00005mm
0.0001mm
0.001deg Inch machine
Inch input
0.0001inch
（
diameter
）
0.0001inch （ radius ）
0.001deg
0.00005inch
0.0001inch
0.001deg
Table 1-3
（
c
）
increment system IS-C
Least input increment Least command increment
mm input
0.0001mm
（
diameter
）
0.0001mm
（
radius
）
0.0001deg
0.00005mm
0.0001mm
0.0001deg Metric machine
Inch input
0.00001inch
（
diameter
）
0.00001inch （ radius ）
0.0001deg
0.00005inch
0.0001inch
0.0001deg
mm input
0.0001mm （ diameter ）
0.0001mm
（
radius
）
0.0001deg
0.000005mm
0.00001mm
0.0001deg Inch machine
Inch input
0.00001inch
（
diameter
）
0.00001inch （ radius ）
0.0001deg
0.000005inch
0.00001inch
0.0001deg
Whether the least input increment is mm or inch is determined by the machine based on the
parameter INM(1001#0). The least input increment can be switched between the inch and the mm
input, which is controlled by G codes( G20 or G21) or the set parameter.