Applicable Systems
2000B
2000G
3000G
J50
LX1/LX2/LX3
MX1/MX2/MX3
Symptoms
Alarm 257: ZR DECLS ERROR (Z). The Yasnac MX3 CNC control displays this alarm on the operator panel.
Possible Causes
- Refer to the machine tool builder manual for this Yasnac control
- Check program, axis, spindle and I/O status when the alarm occurred
Troubleshooting Steps
- Step 1: Read the alarm number on the Yasnac display and note the mode
Alarm noted - Step 2: Check the program block and machine condition in effect
Trigger identified - Step 3: Consult the Yasnac manual section for this alarm
Cause understood - Step 4: Correct the condition and clear the alarm
Alarm cleared
How to Reset
Reset: correct the cause, press the RESET key. If it persists, cycle power off/on. Do not ignore repeated alarms.
Frequently Asked Questions
- Q: What does alarm 257 on a Yasnac MX3 control mean?
Alarm 257 corresponds to: ZR DECLS ERROR (Z) (Yasnac MX3). Refer to the machine tool builder manual for the exact trigger and recovery.
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Source: CNC Alarms.com - https://cncalarms.com/yaskawa/
Category: CNC
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