LTMT Main Unit with Modbus RTU Protocol

Overview

The LTMT main unit with Modbus RTU protocol is equipped with two Modbus RTU communication connector types on the front face:

Plug-in 4-terminal connector
RJ45 port for HMI connection

The communication connectors follow the Modbus RTU interoperability standards. The use of the Modbus RTU 4-terminal connector is recommended. It allows daisy chain and point-to-point connection. The HMI port allows only point-to-point connection.

NOTE: You can connect the Modbus RTU client to any one of the two ports:

Terminal connection port
HMI port

Description

A	Digital input terminals
B	RJ45 port for expansion unit connection
C	RJ45 port for HMI connection or Modbus RTU communication
D	Modbus RTU communication open-style connector
E	Temperature input terminal
F	Power supply terminal
G	QR code to product information page
H	Test/Reset button
I	Status LEDs
J	Digital output terminals