
6. INTERPOLATION FUNCTION
B–63503EN–1/01
236
7620 Movement of tool rotation axis per revolution
[Data type] Two–word
Increment system IS–B IS–C Unit
Rotation axis 0.001 0.0001 deg
[Valid data range] 1 to 9999999
This parameter sets the movement of a tool rotation axis per revolution.
7621 Maximum allowable speed for the tool rotation axis (polygon synchronization axis)
[Data type] Word
[Unit of data] min
–1
[Valid data range] For polygonal turning using servo motors:
0 to 1.2 10
8
set value of the parameter No. 7620
This parameter sets the upper–limit rotation speed of a tool rotation axis.
The rotation speed of the tool rotation axis is clamped by the set
upper–limit rotation speed during polygon turning. The spindle and tool
rotation axis go out of synchronization when the rotation speed is clamped
(P/S alarm No. 5018).
Number Message Description
217 DUPLICATE G251 (COM-
MANDS)
G51.2 (or G251) is further comman-
ded in the polygonal turning mode.
Modify the program.
218 NOT FOUND P/Q COM-
MAND IN G251
P or Q is not commanded in the
G51.2 (or the G251) block, or the
command value is out of the range.
Modify the program.
219 COMMAND G250/G251
INDEPENDENTLY
G51.2 (or G251) and G50.2 (or G250)
are not independent blocks.
220 ILLEGAL COMMAND IN
SYNCHR–MODE
In the synchronous operation, move-
ment is commanded by the NC pro-
gram or PMC axis control interface for
the synchronous axis.
221 ILLEGAL COMMAND IN
SYNCHR–MODE
Polygon machining synchronous op-
eration and Cs contouring control or
balance cutting are executed at a
time. Modify the program.
Alarm and message