OMRON PLC Programmable Logic Controller Module DRT2-TS04T

Omron DRT2-TS04T Thermocouple Input Unit

Overview

The DRT2-TS04T is an Omron DeviceNet thermocouple input unit. Omron identifies this model as DRT2-TS04T with thermocouple input, 4 inputs, and allocation of 4 input words at the master unit, with 8 input words when 1/100 display mode is selected.

Omron’s product-family page also describes it specifically as a DeviceNet thermocouple input unit supporting a wide range of thermocouple types.

In addition to the basic input structure, Omron lists 11 to 25 VDC communications power, 70 mA max. current consumption at 24 VDC, compliance with IEC61000-4-4 2.0 kV noise immunity, DIN 35 mm-track mounting, and an operating environment of -10 °C to 55 °C and 25% to 85% humidity.

Omron also highlights family-level functions such as scaling, comparator functions, recording operating time in a preset temperature range, and temperature-difference detection between channels, which makes the unit more than a simple raw-input block.

Technical Data

Application Value

The DRT2-TS04T is suited to temperature measurement nodes on DeviceNet, distributed machine monitoring, process-temperature acquisition, and control systems that need multiple thermocouple channels without using a central rack analog card. Its 4-channel structure and DeviceNet format make it useful where temperature signals need to be collected close to the process rather than routed back to a central PLC cabinet.

Its functionality also supports more advanced temperature handling than a basic terminal block.

Omron lists scaling, comparator functions, temperature-range runtime recording, and temperature-difference detection between channels, which adds value in systems where temperature is part of machine condition monitoring or process validation as well as control.

Selection Notes

The main checks are the DeviceNet architecture, the need for thermocouple input rather than RTD input, the 4-channel requirement, and the available communications power range.

If the original system needs a thermocouple terminal on the DRT2 platform, this model should be matched against that exact signal type and node structure.

FAQ

Q1: What kind of unit is DRT2-TS04T?
It is an Omron DeviceNet thermocouple input unit with 4 input channels.

Omron distinguishes it from the DRT2-TS04P, which is the platinum-resistance-thermometer version, so the TS04T is specifically the thermocouple model.

Q2: Why is the exact input type important on this model?
Because this unit is defined for thermocouple input. Omron’s own product family separates thermocouple and platinum-resistance versions, so the replacement choice must preserve the signal type used in the installed system.

Selecting the wrong variant would change the measurement method at the hardware level.

Q3: What does the 4-word or 8-word allocation mean?
Omron specifies 4 input words at the master unit in standard mode and 8 input words when 1/100 display mode is selected.

That matters in network mapping and controller configuration, because the way the node occupies process data depends on the selected operating format.

Q4: Does this unit do more than basic temperature input?
Yes. Omron’s product-family information states that the temperature input terminal supports functions such as scaling, comparator functions, operating-time recording in a preset temperature range, and temperature-difference detection between input channels.

These features add useful handling around the temperature channels inside the DeviceNet terminal family.

Q5: What should be checked before ordering?
Check the installed part number, confirm the node is DeviceNet, verify that the application requires a thermocouple input unit rather than the RTD version, and make sure the system needs the same 4-channel terminal with the same communications-power range.

Those are the key match points for DRT2-TS04T.