Modicon Quantum PLC - BUSY CONTROLLER

Syrist

Member
Join Date
Jun 2006
Location
Kitchener
Posts
17
Hello, I'm trying to access a quantum PLC using ProWorx. Network explorer can find it on modbus plus node 12 but it's status reads "BUSY CONTROLLER". It only started to do this after I tried to reset the PLC by turning off the rack and unplugging the battery.

It seems that no matter what I do the PLC always indicates "BUSY CONTROLLER" and I can't download, get online, etc.

Before I unplugged the PLC the status always showed the correct information.

Any ideas or suggestions would be appreciated... thanks.

-Pete
 
I fixed it by physically removing the PLC and power supply from the rack and leaving it off (with battery unplugged) for a few minutes. Weird.
 

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