Specifications

I Alarms
Emergency Stop Alarms (EMG)
I - 47
8. Emergency Stop Alarms (EMG)
EMG Emergency stop PLC
Details
The user PLC has entered the emergency stop state during the sequence process.
Remedy
- Investigate and remove the cause of the user PLC emergency stop.
EMG Emergency stop EXIN
Details
The "emergency stop" signal is significant (open).
Remedy
- Cancel the "emergency stop" signal.
- Check for any broken wires.
EMG Emergency stop SRV
Details
An alarm occurred in the servo system causing an emergency stop.
Remedy
- Investigate and remove the cause of the servo alarm.
EMG Emergency stop STOP
Details
The user PLC (ladder sequence) is not running.
Remedy
- Check the setting of the control unit rotary switch CS2. Correct it if set to "1".
- Check the [RUN/SP] (run/stop) switch on the PLC edit file save screen (onboard function).
Turn it OFF if ON.
EMG Emergency stop SPIN
Details
Spindle drive unit is not mounted.
Remedy
- Cancel the causes of the other emergency stop.
- Check the "emergency stop" signal input in the spindle drive unit.
EMG Emergency stop PC_H
Details
Failure in the high-speed PC processing abnormal
Remedy
- Correct the sequence program. (To stop monitoring the high-speed PC processing tempo-
rarily, set "1" in "#1219 aux03/bit1 (Stop high-speed PC monitoring function)". Disable the
monitoring function only as a temporary measure.)
EMG Emergency stop PARA
Details
Setting of the door open II fixed device is illegal.
Setting of the parameters for dog signal random assignment is illegal.
Remedy
- Correct the "#1155 DOOR_m" and "#1156 DOOR_s" settings. (When the door open II fixed
device is not used, set "#1155 DOOR_m" and "#1156 DOOR_s" to "100".)
- Correct the "#2073 zrn_dog (Origin dog Random assignment device)", "#2074 H/W_OT+ (H/
W OT+ Random assignment device)", "#2075 H/W_OT- (H/W OT- Random assignment de-
vice)" and "#1226 aux10/bit5 (Arbitrary allocation of dog signal)" settings.
EMG Emergency stop LINK
Details
An emergency stop occurs when the FROM/TO instruction is not executed within 500ms.
Remedy
- Execute the FROM/TO instruction one or more times every 500ms.
The time in which no interrupt request is issued from MELSEC is measured and stored in the
following R registers:
R10190: Current timeout counter
R10191: Maximum timeout counter after power ON
R10192: Maximum timeout counter after system is started up (this is backed up)
Details
MELSEC is in error and reset states.
Remedy
- Check the MELSEC states.
Details
The contents of MELSEC-specific code area in buffer memory have been damaged.
Remedy
- Check the MELSEC states.
Details
PLC serial link communication has stopped.
(Note) When "WAIT" is entered in the PLC serial link, only the preparation sequence has been
established before the communication stops. It is supposed that the settings of the serial
link parameters "#1902 Din size" and "#1903 Dout size" are incorrect or the "#1909 Tout
(ini)" set-time is too short in basic specification parameters.
Remedy
- Check the CC-Link card wiring and the external sequencer transmission.
- Check the link communication errors shown on the diagnostic screen.
- Correct the settings of the serial link parameters in basic specification parameters.
EMG Emergency stop WAIT
Details
The preparation sequence is not sent from the master station. Otherwise, the contents of the
received preparation sequence are inconsistent with those of the parameters, so that the usual
sequence cannot be started.
(Note) When "LINK" is also entered for the PLC serial link, refer to "Note" in the section,
"LINK".
Remedy
- Check that the CC-Link card switch setting and wiring as well as the external sequencer
transmission are normal.
- Check the diagnostic screen for link communication errors.