AS Series Module Manual 
14-20 
  LED Indicators 
Indicator  Color  Name  Description 
PWR 
Blue  Power indicator 
ON: The power supply is normal.   
ERR 
Red  Error indicator 
ON: A major error occurs in the module. 
OFF: The module is operating normally. 
Blinking: A minor error exists in the module (Blinks every 0.5 seconds.) 
CH1 Act. 
Green 
Ch1 counter state 
indicator 
OFF: The counter is disabled. 
Pulse Input - 
ON: The counter is enabled but there is no change in the counter value. 
Blinking: The counter value is changing. (Blinks every 0.5 seconds.)  
SSI Input - 
Blinking: The counter is enabled and the position value is being updated. 
every 0.5 seconds.)     
CH1 A 
Red 
Ch1 phase-A input 
indicator 
ON: The phase-A input for channel 1 is active. 
OFF: The phase-A input for channel 1 is not active. 
CH1 B 
Red 
Ch1 phase-B input 
ON: The phase-B input for channel 1 is active. 
OFF: The phase-B input for channel 1 is not active. 
CH1 Z 
Red 
Ch1 phase-Z or DI 
input indicator 
ON: The phase-Z input for channel 1 is active. 
OFF: The phase-Z input for channel 1 is not active. 
Y0.0 
Red 
Y0.0 output status 
ON: The Y0.0 output is active. 
OFF: The Y0.0 output is not active. 
Y0.1 
Red 
Y0.1 output status 
indicator 
ON: The Y0.1 output is active 
OFF: The Y0.1 output is not active. 
CH2 Act. 
Green 
Ch2 counter state 
indicator 
OFF: The counter is disabled. 
Pulse Input - 
ON: The counter is enabled but there is no change in the counter value. 
Blinking: The counter value is changing. (Blinks every 0.5 seconds.)      
SSI Input - 
Blinking: The counter is enabled and the position value is being updated. 
(Blinks 
every 0.5 seconds.)     
CH2 A 
Red 
Ch2 phase-A input 
ON: The phase-A input for channel 2 is active. 
OFF: The phase-A input for channel 2 is not active. 
CH2 B 
Red 
Ch2 phase-B input 
ON: The phase-B input for channel 2 is active. 
OFF: The phase-B input for channel 2 is not active. 
CH2 Z 
Red 
Ch2 phase-Z or DI 
ON: The phase-Z input for channel 2 is active. 
OFF: The phase-Z input for channel 2 is not active. 
Y0.2 
Red 
Y0.2 output status 
ON: The Y0.2 output is active 
OFF: The Y0.2 output is not active. 
Y0.3 
Red 
Y0.3 output status 
ON: The Y0.3 output is active 
OFF: The Y0.3 output is not active.