User's Guide

14
Stop Bit
1 bit/2 bit are available.
Parity
None, Odd and Oven are available.
Execution Interval
The execution interval between each Modbus command.
Max Resp Time
The maximum response time that the UC50x 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
Set the maximum retry times after device fails to read data from RS485
terminal devices.
Modbus RS485
bridge LoRaWAN
If this mode is enabled, UC50x will transparent Modbus RTU commands
from network server to RS485 terminal devices and send Modbus reply
originally back to network server.
Port: Select from 2-84, 86-223.
Note: When you use power output to power RS485 Modbus slave devices, it only supplies power
when reporting interval is coming. It’s suggested to power slave devices with external power
during the PoC test.
3. Click to add Modbus channels, then save configurations.
Parameters
Description
Channel ID
Select the channel ID you want to configure, 16 channels selectable.
Name
Customize the name to identify every Modbus channel.
Slave ID
Set Modbus slave ID of terminal device.
Address
The starting address for reading.
Quantity
Set read how many digits from starting address. It fixes to 1.
Type
Select data type of Modbus channels.
Sign
The tick indicates that the value has a plus or minus sign.
Example: If you configure as following picture, UC50x will send Modbus read command to
terminal device regularly: 01 03 00 00 00 01 84 0A