Chapter 13 Warning Codes|MH300
ID No.
Display Warning Name Description
84
Modbus TCP over
(Eco0)
M
odbus TCP exceeds maximum communication
value
Action and Reset
Action condition Hardware detection
Action time Immediately acts
Warning setting parameter N/A
Reset method Manual reset
Reset condition Immediately resets
Record N/A
Cause Corrective Actions
The Master communication
value is more than the
allowable quantity of the
communication card
Reduce Master communication value
The upper unit is online without
communicating, and does not
break off the Modbus TCP link,
causes occupy connection
Revise program of upper unit, the communication should be break off
when it is not used for a long time
A new
is built every time when the
upper unit is connected to the
communication card, which
caused occupy connection
Rev
ise program of upper unit: use the same Modbus TCP connection
when connected to the same communication card
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