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

LIN bus to 4-20 mA, with OLED display

Article number W181A-P503

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.

Supply 24 V DC (±15 %)
Input LIN bus; value from a message with adjustable ID
Output 4-20 mA

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.

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Orders are placed by email with a purchase order. We supply businesses only.

Specifications

Specifications
Supply	24 V DC (±15 %)
Input	LIN bus; value from a message with adjustable ID
Output	4-20 mA
Isolation	Not galvanically isolated
Setup	OLED display with UP, DOWN and OK buttons; DIP switch for basic choices
Monitoring	Output goes to an adjustable value if the message stops
USB	USB-C for software updates and reading the status
Wi-Fi	Built-in hotspot for software updates
Mounting	DIN rail, compact enclosure
Internally fitted with	PR181s05

Printable datasheet

Setup

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

Application

Reading a sensor with a LIN bus with a PLC with a 4-20 mA input
Using a vehicle sensor in a machine or test setup
Passing a LIN value over a long cable as 4-20 mA

W181 series: compact modules with OLED display and Wi-Fi

The modules in the W181 series are compact and fit on a DIN rail. They have an OLED display and push buttons, so they can be set up without a computer and show the current values. A DIP switch on the board fixes basic choices. Software updates are loaded through the USB-C port and a built-in Wi-Fi hotspot. The modules run on 24 V DC. Extensions are possible on request, such as an extra relay output, a different sensor input or a bus connection.

More about the W181 series