
B-65395EN/01 HANDLING 2.SIGNAL DESCRIPTIONS
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2.3.2 Reset and Emergency Stop
(1) Emergency stop signal *ESP
[Classification] Output signal <Yy+1#1> (common to both the peripheral equipment
control and direct command interfaces)
[Function] This signal brings the control unit to an emergency stop.
[Operation] When the signal becomes 0, the control unit operates as follows:
1. The control unit stops immediately during axis movement.
2. A reset is applied after the stop.
3. When the emergency stop signal is 0, the servo preparation
completion signal SA is also 0, because the servo system is not
operating. If axis movement occurs while the servo system is not
operating, the amount of movement is reflected in the current
position coordinates held in the control unit (follow-up).
4. While the emergency stop signal is 0, jog and function code
commands cannot be issued.
(2) External reset signal ERS
[Classification] Output signal <Yy+1#0> (common to both the peripheral equipment
control and direct command interfaces)
[Function] This signal resets the servo amplifier module.
[Operation] When the signal becomes 1, the servo amplifier module operates as
follows:
1. The servo amplifier module immediately decelerates axis
movement to a stop.
2. After a stop, the servo amplifier module is reset, then the
following are canceled:
• Function code commands are canceled regardless of whether
they are under execution, buffered, or on input signals.
• In an alarm state, those alarms that can be canceled are
canceled.
3. While the external reset signal is 1, jog and function code
commands cannot be issued.
(3) Reset in-progress signal RST
[Classification] Input signal <Xx+2#1> (common to both the peripheral equipment
control and direct command interfaces)
[Function] This signal indicates that the control unit is being reset.
[Input condition] The signal becomes 0 when:
1. A reset is completed.
The signal becomes 1 when:
1. A reset is in progress.
That is, the external reset signal ERS ((2) in Section 2.3.2) is 1, or the
emergency stop signal *ESP ((1) in Section 2.3.2) is 0.