User's Manual

LoRa Node Controller
LN501 and LN1152
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Execution Interval
The execution interval between Modbus commands.
Max. Response Time
The maximum response time that the LN501 waits for the reply
to the command. If it does not get a response after the maximum
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 transparent mode is enabled, LN501 will convert 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.
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, and then save configurations.
Object 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.