Delta MS300 Series User Manual page 541

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