
15. PMC CONTROL FUNCTION
B–63523EN–1/03
1792
[Classification] Input signal
[Function] When the signal is set to “1”, the corresponding axis becomes subject to
PMC control.
When the signal is set to “0”, PMC control becomes invalid. Changing
the setting of the control axis selection signal is possible only when
control axis selection status signal *EAXSL is set to “0”. Changing the
setting when *EAXSL is set to “1” results in the issue of a P/S alarm (No.
139). Alarm signal EIALg is set to “1”.
When NCC, bit 5 of parameter No. 8001, is set to “0”, a command issued
from the CNC is executed while the control axis selection signal is set to
“1” and signal *EAXSL is set to “0”. When the parameter is set to “1”,
the same attempt results in the issue of a P/S alarm (No. 139). Note that
the command is invalidated when the tool is moving along the axis in
manual continuous feed mode.
If the control axis selection signal is set to “1” while the CNC is currently
executing a command, a P/S alarm is generated. In manual continuous
feed mode, setting this signal to “1” suspends the execution of the
command. While *EAXSL is set to “0”, the status of alarm signal EIALg
does not change to 1 when the control axis selection signal is set to 1 and
a P/S alarm (No. 139) is generated. In this case, the axis can be controlled
from the PMC, even when the CNC is in the alarm status.
NOTE
After setting control axis selection signals EAX1 to EAX8 to
1, it takes at least 8 msec before the PMC can issue
commands to the CNC.
[Classification] Input signal
[Function] Specifies the following operations through each path.
Axis control
command
(hexadecimal
code)
Operation
Rapid traverse (linear acceleration/deceleration)
Performs the same operation as G00, used by the CNC.
Cutting feed – feed per minute
(exponential acceleration/deceleration or linear acceleration/
deceleration after interpolation)
Performs the same operation as G94 G01, used by the
CNC.
Signal Detail
1 Control axis selection
signals EAX1 to EAX8
2 Axis control command
signals EC0g to EC6g