MD280/MD280N User Manual Fault Diagnosis and Countermeasures
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Err16
If the host computer is working
If the RS485 communication
cable connection is normal
If the baud rate setting is correct
Check the host computer
cable connection
Check the cable for
communications
Set the baud rate correctly
Communications fault
Yes
No
If the communication parameters
are set correctly
Modify the communication
parameters
Ask for technical
support
Yes
Yes
Yes
No
No
No
Fig.8-14 Communication fault (ERR16)
Err16
Check if the 24 V power
supply contactor is normal
Ask for technical support
Replace the contactor
Contacor pull-in fault
No
Yes
Fig. 8-15 Contacor pull-in fault
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