Serial Pulse Coder Miscount Alarm (CMAL)

What does 305 mean?

A miscount alarm (CMAL) was detected for the serial pulse coder, indicating an error in counting pulses. This suggests a problem with the pulse coder's counting mechanism or an intermittent fault.

• Miscounting of pulses by the serial pulse coder.

1. 1

   Turn the main power OFF.

2. 2

   If the alarm recurs when power is re-applied, replace the motor (which contains the pulse coder).

3. 3

   Even if the alarm does not recur, restart the operation from reference position return to re-establish positional accuracy.