4 e-word format 17.5 e: # thrds/inch word format – Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set User Manual
Page 403

Letter Format Parameters
Chapter 17
17-5
The E-word letter format parameter is covered in E: # THRDS/INCH
Word Format on page 17-5.
Function
This parameter is used for lathe controls and grinder applications only. It
corresponds to the E-word that is used to program the thread lead in one of
these threading methods:
G-Code System
Lathe
Grinder
A
B
C
Surface Cylindrical
Description
G32
G32
G33
G33
G33
Constant lead thread-cutting mode
G33
G33
G34
G34
G34
Variable lead thread-cutting mode
G92
G78
G21
—
—
Single Pass Threading Cycle
G76
G76
G78
—
—
Multi-Pass Threading Cycle
E-words correspond to the thread lead (in number of threads per inch)
along the axis with the largest programmed distance to travel to make the
thread cut.
This parameter specifies the maximum number of digits that are permitted
to the left and to the right of the decimal point in the E-word format.
Parameter
Parameter
Number
E: #THRDS/INCH Word Format
[464]
Range
Selection
Result
Selection
Result
(a)
3.4 threads per inch
(g)
2.4 threads per inch
(b)
3.5 threads per inch
(h)
2.5 threads per inch
(c)
4.3 threads per inch
(i)
2.6 threads per inch
(d)
4.4 threads per inch
(j)
3.3 threads per inch
(e)
5.3 threads per inch
(k)
4.2 threads per inch
(f)
2.3 threads per inch
(l)
5.2 threads per inch
17.4
E-Word Format
17.5
E: # THRDS/INCH Word
Format