WEG RS485-ETH-N, User Manual, Page: 21 / 32

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Ethernet / Serial Gateway - RS485-ETH-N | 21
3.4.2 Client Mode
While operating in the client mode, RS485-ETH-N converts MODBUS RTU and MODBUS ASCII queries it had
received from the serial port to MODBUS RTU Over MODBUS TCP, TCP and MODBUS ASCII Over MODBUS RTU
and TCP queries and forwards them to remote devices connected to the Internet or local area network. It converts
the response it had received from the devices to query protocol and sends it to the querying device (master).
3.4.2.1 Modbus Query Side
In the client mode, notification areas in MODBUS Query Side (interface in which information will be requested from
RS485-ETH-N) pane and settings that can be performed are as follows:
Physical Port:
It is for notification purposes. While running in the client mode, MODBUS responses have to come to RS485-
ETH-N over the serial connection.
Protocol:
Types of MODBUS responses coming to RS485-ETH-N over serial connection is identified by the help of this field.
Either “MODBUS RTU” protocol or “MODBUS ASCII” protocol is selected.
3.4.2.2 Modbus Response Side
In the client mode, notification areas in the MODBUS Response Side (interface in which RS485-ETH-N will make
queries) pane and settings that can be performed are as follows:
Physical Port:
It is for notification purposes. While running in the client mode, MODBUS queries have to come to RS485-ETH-N
over the Ethernet connection.
Protocol:
Types of MODBUS responses coming to RS485-ETH-N through Ethernet connection is identified by the help of
this field. Either MODBUS RTU Over TCP, TCP or MODBUS ASCII Over TCP is selected.
Port:
Port to which RS485-ETH-N will listen.
Target IP Address:
Port to which RS485-ETH-N will connect.
Timeout:
Throughout this period, RS485-ETH-N waits response for the last query it had sent to the slave devices. If it does
not receive any response over this period, it waits for a new query from the serial interface.