Delta VFD25AMS43ANSAA - Page 541

Chapter 13 Warning CodesMS300
532
ID No.
Display on LCD Keypad
Warning Name
Description
84
Modbus TCP over
(ECo0)
Modbus TCP exceeds the maximum communication
value
Action and Reset
Action Condition
Hardware detection
Action Time
Immediately act
Warning Setting Parameter
N/A
Reset Method
Manual reset
Reset Condition
Immediately reset
Record
N/A
Cause
Corrective Actions
The Master communication value
exceeds the allowable number of
the communication cards
Decrease the Master communication value
Connection occupied due to not
disconnecting the Modbus TPC
while the upper unit is connected
without communicating.
Revise the program of the upper unit to disconnect the connection while the
communication is not used for a long time.
A new Modbus TCP connection is
built whenever the upper unit is
connected to the communication
card, which causes connection
occupied.
Revise the program of the upper unit to use the same Modbus TCP connection
when connecting to the same communication card.