
A-90188E-01 SETTING 1.MODBUS/TCP SERVER FUNCTION
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Error number Log message Meaning and action to be taken
E-041A FRAME TRANSMISSION FAILED (TCP) The transmission of the frame was unsuccessful.
(TCP)
A communication error occurred due to one of the
following causes:
→ The network quality degraded, data could not be
transferred to the communication destination
(MODBUS/TCP client), and the logical
communication path was disconnected.
→ The communication destination (MODBUS/TCP
client) disconnected the logical communication
path.
→ The Ethernet cable was disconnected.
→ Data cannot be posted to the communication
destination (MODBUS/TCP client) due to a
firewall setting.
E-041B FRAME RECEPTION FAILED (TCP) The reception of the frame was unsuccessful.
(TCP)
A communication error occurred due to one of the
following causes:
→ The network quality degraded, data could not be
received from the communication destination
(MODBUS/TCP client), and the logical
communication path was disconnected.
→ The communication destination (MODBUS/TCP
client) disconnected the logical communication
path.
→ The Ethernet cable was disconnected.
→ Data cannot be posted to the communication
destination (MODBUS/TCP client) due to a
firewall setting.
E-0433 IP ADDRESS DUPLICATION The IP address of local node was duplicated the IP
address of other nodes.
Specify an IP address except for the IP address of
other nodes.
E-0434
E-0435
E-0443
SOCKET WAS DISCONNECTED → The communication destination (MODBUS/TCP
client) disconnected the logical communication
path.
E-0A02 CANNOT READ MAC ADDRESS It was impossible to read the MAC address.
The MAC address may not be written on the
MODBUS/TCP board or the board may be
damaged.
E-0A06 NETWORK IS TOO BUSY. The network is too busy.
An excessive amount of data flows over the
network. Take action such as dividing the
network.
E-0B00 THE OWN IP ADDRESS IS WRONG The own IP address is wrong.
Set the IP address according to the IP address
specification format.
E-0B01 THE OWN IP ADDRESS IS NOT SET The own IP address is not set.
Set the IP address.
E-0B02 SUBNET MAST IS WRONG The subnet mask is wrong.
Set the subnet mask according to the subnet mask
specification format.