© 2022 All rights reserved. Data subject to change without notice.
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Rev. B | 2022.03
LPT-M - Operation Manual
6.7 Modbus® Settings
The LPT-M transmitter operates on a local area network (LAN) using Modbus®
RTU RS-485 serial communications. Complete systems (controller with
digital transmitters and peripherals) will be shipped pre-configured with the
appropriate Modbus® ID and baud rate.
In order for communication to be successful between devices, be sure your
network connection is complete, the network termination switches are set
appropriately and all the devices are configured with the same baud rate,
character format, etc. Each device will have its own unique Modbus
®
ID.
Individual transmitters being added to an existing system may require changes
to the default Modbus® settings.
6.7.1 Change Modbus® ID
If required, you can change the Modbus® ID assigned to an LPT-M transmitter.
In the Hardware Configuration Menu (passcode 1001), press either ARROW to
scroll through the menu and select Modbus®.
Press ENTER and use the ARROW keys to change the ID number. Move to the
next digit by pressing ENTER. When finished, press ENTER to save and Exit.
6.7.2 Change Baud Rate
All devices on the same network must have the same baud rate. The default
Modbus® baud rate for all CETCI Modbus® devices is 19,200. If you need to
