New Omron Temperature Input Terminal Module DRT2-TS04P DRT2-TSO4P DRT2TS04P

Omron DRT2-TS04P | DeviceNet Smart Slave 4-Channel Platinum Resistance Thermometer Input Terminal

Four RTD Channels Directly on the DeviceNet Network

The DRT2-TS04P adds four platinum resistance thermometer channels directly to a DeviceNet network as a Smart Slave unit. Each input accepts Pt100, JPt100, Pt2, or JPt2 RTD sensors — configurable per channel. The temperature values from all four channels are mapped directly into the DeviceNet master's I/O image, where the PLC reads them as standard process data without separate signal conditioning hardware or analogue I/O modules.

The DRT2 Smart Slave designation means the module provides additional intelligence beyond simple I/O mapping. Temperature comparator functions, scaling, operating time recording within preset temperature ranges, and temperature difference detection are all configurable directly in the module — processing tasks that would otherwise consume PLC programme capacity.

The DRT2-TS04P handles platinum resistance thermometers only. For thermocouple inputs (K, J, T, and similar), the DRT2-TS04T is the correct variant. Confirm the sensor type installed in the machine before ordering.

Key Specifications

RTD Wiring and Terminal Block Notes

The DRT2-TS04P uses a removable 2-piece terminal block. The terminal block contains cold junction compensation components that are matched to the specific unit at manufacture — Lot No. and serial No. are printed on both the terminal block and the unit body. If only the terminal unit is replaced without the matching terminal block, measurement accuracy may be reduced depending on mounting direction. When replacing the DRT2-TS04P, always confirm that the terminal block being reused matches the new unit's Lot and serial numbers, or replace both together.

Sensor connections carry 0.35mA excitation current from the module. Cable resistance can introduce measurement offset in 2-wire RTD connections — use 3-wire or 4-wire RTD configurations where measurement accuracy is important.

FAQ

Q1: What is the difference between DRT2-TS04P and DRT2-TS04T?

The DRT2-TS04P accepts platinum resistance thermometer inputs (Pt100, JPt100, Pt2, JPt2 — RTD type). The DRT2-TS04T accepts thermocouple inputs (K, J, T types and others). Both are 4-channel DeviceNet Smart Slave modules with identical physical form factor. Select based on the temperature sensor type installed in the machine.

Q2: Can different RTD types be used on different channels of the same DRT2-TS04P?

Yes. Each of the four channels can be configured independently for Pt100, JPt100, Pt2, or JPt2 sensor type. Configuration is set via DIP switches or the DeviceNet configuration tool. This allows one module to monitor sensors of different RTD standards simultaneously on the same DeviceNet node.

Q3: How is the DRT2-TS04P configured in a DeviceNet network?

The module appears as a DeviceNet slave at the address set by the node address switch. Configuration (sensor type per channel, scaling, comparator setpoints) is performed using an Omron DeviceNet master unit configuration tool or through explicit messages from the PLC. The temperature data is mapped into the master's input data image for each polling cycle.

Q4: The terminal block is removable. Can it be swapped independently?

The terminal block can be removed and replaced for wiring convenience. However, the terminal unit and terminal block contain matched cold junction compensation components. If the Lot No. and serial No. on the terminal block and the unit body do not match, measurement accuracy may degrade depending on mounting orientation. Replace as a matched pair when possible.

Q5: What wiring configuration is recommended for the Pt100 inputs?

3-wire RTD wiring is recommended for most industrial applications to compensate for lead wire resistance. 2-wire connections are simpler but introduce measurement error proportional to the cable resistance. 4-wire connections eliminate lead resistance error entirely and are preferred for high-accuracy measurements. Confirm the input configuration DIP switch setting matches the wiring method used.