Datasheet PR515x506

I/O modules and communication

Issued 3 November 2026

PT100 to Modbus RTU (RS485), with OLED display

Article number PR515x506

PR515 module in horizontal DIN rail enclosure, front view with pluggable screw terminals

The PR515x506 measures the temperature with a PT100 sensor in a 2-, 3- or 4-wire connection and provides the value as a Modbus RTU register on an RS485 bus. This lets a PLC, HMI or building management system read the temperature without an analogue input. The Modbus address and baud rate are set on the OLED display, which also shows the current temperature.

Price on request. Supplied in series, from 10 units per item. Not in stock? Then we build your series. One or a few units only as a trial, for a company with a series in sight.

Specifications

Supply12 and 24 V DC, operating range 11 to 30 V DC
InputPT100, 2-, 3- or 4-wire
Measuring rangeFor example −50 to +150 °C
OutputModbus RTU over RS485; temperature as a register
IsolationNot galvanically isolated
SetupOLED display with UP, DOWN and OK buttons
CommunicationModbus address and baud rate adjustable on the display
USBUSB-C for software updates and reading the status
Wi-FiBuilt-in hotspot for software updates
MountingDIN rail, horizontal enclosure
Internally fitted withPR181T23

Setup

  1. Connect the supply, the PT100 and the RS485 bus (A and B) according to the wiring diagram supplied with the module.
  2. On the display, set the Modbus address and the baud rate.
  3. Store with SAVE and read the temperature with your PLC or HMI; the register list is supplied with the module.