User's Guide

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4.3.2 RS485 Settings
UC100 has one RS485 port for Modbus RTU device connection.
1. Connect RS485 device to RS485 port.
2. Go to “General -> RS485” to enable RS485 and configure serial port settings. Serial port
settings should be the same as the RS485 terminal devices.
Parameters
Description
Stop Bit
1 bit/2 bit are available.
Data Bit
8 bit is available.
Parity
None, Odd and Oven are available.
Baud Rate
1200/2400/4800/9600/19200/38400/57600/115200 are available.
Execution Interval
(ms)
The execution interval between each Modbus channel command.
Max Resp Time
(ms)
The maximum response time that the UC100 waits for the reply to the
command. If it does not get a response after the max response time, it is
determined that the command has timed out.
Max Retry Time
(ms)
Set the maximum retry times after the device fails to read data from RS485
terminal devices.