If ERR LED keeps be ON, it indicates that PLC running is in error, please correct
the program in time
If PWR LED is OFF, it indicates that the power supply is in error, please check
your wiring;
7-2．Daily Maintenance
Even the PLC has certain anti-interfere ability and strong stability, you should check
the PLC regularly.
The check items include:
Check if the input/output terminals, power supply terminals are loosen
Check if the COM ports are correct
Check if the PWR LED, I/O LED can be ON
Clear the dusts on PLC, to avoid the dusts fall into PLC
Manage to make PLC running, the storage environment fits the standard told in
chapter 2-1-1
There is no any component in PLC to shorten the life of the battery, so the battery can
work all the time. However, if your PLC supports clock function, you should change
the battery regularly.
The battery's life is usually 3~5 years;
If you need the replay output PLC type, and the relay needs to open/close
frequently, or drive large capacity load, the battery's life may be decreased
If you find battery's power decreased, please change it at your earliest
After changing the battery, please power it on at your earliest, or else the battery
will run out of power automatically.
If you make sure to abandon the products, please treat the products as the industrial
waste.
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