
B-63323EN-1/03 2.PREAPARATIONS FOR OPERATION
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2.2 READY SIGNALS
Overview
The ready signals are set to 1 when the power to the CNC is turned on
and operation is ready.
Signal
CNC Ready Signal
MA<F000#7>
[Classification] Output signal
[Function] The CNC ready signal reports that the CNC is ready.
[Output condition] When the CNC is turned on and becomes ready for operation, the signal
is set to 1. Normally, it takes several seconds to establish this state after
the power is turned on. If a system alarm is issued, the signal is set to 0.
The signal remains set to 1, however, when an emergency stop or a
similar operation is performed.
Servo Ready Signal
SA<F000#6>
[Classification] Output signal
[Function] Indicates that the servo system is ready to start normal operation. If this
signal is not sent, servo control (position control) is not applied.
[Output condition] This signal is set to 1 in any of the following cases:
- When servo system diagnosis has been completed after the power
to the control unit is turned on
- When a servo alarm is cleared by a reset
- When an emergency stop is cleared
This signal is set to 0 in any of the following cases:
- When the power to the control unit is turned off
- When a servo alarm is detected
- When an emergency stop is caused
- When an error in the control unit such as a CPU or memory error
is detected
For those machine axes that are subject to braking, disable the brake
while this signal is set to 1, and enable the brake while this signal is set
to 0. Fig. 2.2(a) shows the timing chart of this signal.