IAI CC-Link, Руководство по эксплуатации

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7.2 Communication signal and operation timing
(1) Controller preparation completion (PWR)
This is turned ON when the controller becomes controllable after power is turned on.
■ Function
This is turned ON when the controller has been normally initialized and becomes controllable after
power is turned on regardless of the status of the alarm and status of the servo.
This is ON if the controller is controllable even when it is in an alarm status.
This synchronizes with the LED (Green) of RDY on the front of the controller.
(2) Emergency stop (EMGS)
This is turned ON when the controller is in emergency stop status.
■
Function
This is turned ON when any alarm for the controller occurs, or there occurs an emergency stop status
by emergency stop circuit (refer to 4.3.1), or motor drive power is in shut-off status. This is turned
OFF when the emergency stop status is released.
(3) Alarm (ALM)
This signal is turned ON when the protecting circuit (function) for the controller detects any abnormality.
■
Function
This signal is turned ON when the protecting circuit (circuit) detects an abnormality and operates.
This can be turned OFF when the cause of the alarm is released and the reset (RES) signal is turned
ON. (Except for alarm on cold start level)
When any alarm is detected, the LED (Red) of ALM on the front of the controller is lit. When in normal
status, this is unlit.
In ERC2, the LED on the upper part of the motor unit is lit in red. It is lit in green with the servo on.
(4) Reset (RES)
This signal has two functions, one of which is alarm reset for the controller, and the other is to cancel
remaining movement amount during pause.
■
Function
[1] Alarm signal can be reset by turning ON this signal after eliminating cause of the alarm during
occurrence of alarm. (Except for alarm on cold start level)
[2] Remaining movement amount can be canceled by turning ON this signal during pause.