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Rev Version 1.4.1
Rev Version 1.4.1
To configure a serial port to allow Modbus TCP to Modbus RTU conversion, click Serial on the menu and select
Modbus TCP/RTU Converter from the Port Type drop-down list (see Figure 40). Configure the parameters
described below.
Figure 40 Serial Configuration - Modbus TCP/RTU Converter
Port Type
Select Modbus TCP/RTU Converter from the drop down list.
Data Rate
Select the data rate to match that of the serial device that is connected and
communicating via the port. Baud rates available from 110 to 230400 baud.
Data Format
Defines the number of data bits, parity and start/stop bits used to
communicate with the serial device.
Flow Control
Flow Control is used by some serial devices to regulate the flow of data
by turning on/off flags that are used to tell the connected serial devices to
start or stop transmitting data. The RS-232 supports CTC/RTS hardware
flow control.
Response Timeout
The amount of time the TCP/RTU Converter waits for a response from the
slave before sending the next poll.
TCP Port
Fixed to 502.
Device ID
Address of the onboard Modbus RTU slave/TCP server. This is the address
that will be polled by the Modbus master/TCP client. Default address is
255, and cannot be changed on this page. To modify this address, use the
Modbus I/O page (see
“4.11 Modbus TCP” on page 54).
Save Changes
Save changes to non-volatile memory.
Save Changes and Activate
Save changes to non-volatile memory and activate the process.
