Datasheet W181A-P503

I/O modules and communication

Issued 4 November 2026

LIN bus to 4-20 mA, with OLED display

Article number W181A-P503

W181 module in compact DIN rail enclosure, angled side view: OLED display, push buttons, DIP switch and screw terminals

The W181A-P503 reads a value from a set LIN message and passes it on as 4-20 mA. This lets a PLC read a sensor or component with a LIN connection, such as a level, pressure or temperature sensor from a vehicle. If the message stops arriving, the output goes to an adjustable value. Message ID, position of the value and scaling are set on the OLED display.

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

Supply24 V DC (±15 %)
InputLIN bus; value from a message with adjustable ID
Output4-20 mA
IsolationNot galvanically isolated
SetupOLED display with UP, DOWN and OK buttons; DIP switch for basic choices
MonitoringOutput goes to an adjustable value if the message stops
USBUSB-C for software updates and reading the status
Wi-FiBuilt-in hotspot for software updates
MountingDIN rail, compact enclosure
Internally fitted withPR181s05

Setup

  1. Connect the supply, the LIN bus and the output according to the wiring diagram supplied with the module.
  2. On the display, set the message ID and the position of the value in the message.
  3. Set the value at 4 mA and at 20 mA and store the settings.