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MODBUS RTU relay output module TDO340

£76.00

(£91.20 Inc. VAT)

Incoming, 5-6 days

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4-channel relay output module with SPST relay contacts.

Description

MODBUS RTU relay output module, TDO340, is a reliable 4-channel SPST device with independent contacts.

It supports the MODBUS RTU protocol and allows you to set relay safety statuses at startup and during communication loss, ensuring your system remains secure.

The module includes a watchdog function that monitors communication failures and responds quickly to maintain safety. The TDO340 uses nonvolatile memory to remember relay states and restore them after power cycling.

It serves as an ideal relay output extension for MODBUS RTU master devices, with an RS-485 interface supporting up to 63 nodes.

Additional features include an LED indicator for communication status and a wide supply voltage range starting from 5VDC. The module also offers reinforced isolation for relay contacts, adding an extra layer of safety to your system.

A built-in 120-ohm termination resistor and easy DIN rail mounting make installation straightforward. Firmware updates can be done via the interface, simplifying maintenance

Features

RS-485 interface supporting up to 63 nodes;
Non-volatile memory to retain relay status;
LED indicator for communication status;
Wide supply voltage range, starting form 5VDC
Watchdog functionality for communication loss;
Reinforced isolation for relay contacts;
Non-volatile memory for settings storage;
Built-in 120ohms termination resistor;
Easy DIN rail mounting;
Firmware update via the interface.

MODBUS RTU relay output module applications

Control and monitor machinery, conveyors, and other equipment in manufacturing environments;
Manage lighting, HVAC, and security systems in commercial buildings;
Integrate with power distribution systems to control circuit breakers and monitor energy usage;
Operate pumps, motors, and valves in remote or hard-to-reach locations;
Interface with power grid components for load management and distribution automation;
Control irrigation systems, greenhouse climate control, and livestock management;
Manage traffic signals, street lighting, and other roadside equipment;
Automate the operation of pumps, valves, and filtration systems in treatment facilities.

The relay module can be used with

Industrial IoT module TCW242
Energy monitoring module TCW260
Third party MODBUS RTU master devices