
FANUC AC SPINDLE MOTOR a series
2. FUNCTION EXPLANATION
B–65160E/02
124
(5) Others
(a) Switching between the spindle rotation control and Cs
contouring control modes during automatic operation
When switching between the spindle rotation control and Cs
contouring control modes is performed during an automatic
operation block, if position gains are changed immediately after
the mode switch, normal operation is impossible. In this case,
confirm the completion of the block, then perform automatic
setting.
(b) The functions for memory type pitch error compensation and
backlash compensation cannot be used for the Cs contouring
control axis.
(c) Before switching to the Cs contouring control mode, signals
MRDYA,
*
ESPA, and SFRA must be set to 1.
(d) When the PMC switches between the spindle rotation control
mode and Cs contouring control mode using an M code, the code
must not be placed in the same block that contains a move
command for the Cs contouring control axis in the NC program.
If such an M code and the move command are included together
in the same block, alarm PS197 is generated.
(6) Alarm
When the Cs contouring axis control function is used, the following
three alarms are added to the conventional alarms:
No. Description
194
The Cs contouring axis control, Cs axis control, or rigid tapping
mode is specified in aseries (Serial) spindle synchronization control
mode. (Cancel the synchronization control mode, then specify the
command.)
195
A command for switching to the spindle, Cs contouring axis control,
or servo mode (such as Cs axis control, or rigid tapping) is
specified, but the specified switching operation is not performed by
aseries (Serial) spindle.
NOTE
1 Alarm 409 is generated as a servo alarm, and alarms 195
and 194 are generated as P/S alarms. Alarm 194 is not
generated when the serial spindle synchronization control
option is not provided.
2 During the Cs contouring control mode, for the T series a
conventional servo alarm related to the third axis, or for the
M series an alarm related to the fourth axis may be
generated.