4-20mA or 0-10V to network Modbus TCP and MQTT data acquisition module WJ181

Product features:

●Convert 4-20mA signal to standard Modbus TCP protocol

● Supports communication protocols such as TCPServer, UDP, MQTT, etc

● Built in web page function, data can be queried through web pages

●Wide power supply range: 8~32VDC

●High reliability, easy programming, and easy application

●Standard DIN35 rail installation, convenient for centralized wiring

●Users can set module IP addresses and other parameters on the webpage

●Low cost, small size, modular design

● Dimensions: 106mmx59mmx37mm

Typical applications:

● Signal measurement, monitoring, and MQTT reporting

●Modbus TCP network, data collection

●Intelligent building control, security engineering and other application systems

●Industrial automation control system based on TCP network

●Industrial site signal isolation and long-distance transmission

●Equipment operation monitoring, MES system

●Measurement of sensor signals

● Acquisition and recording of industrial field data

●Development of medical and industrial control products

● 4-20mA or 0-5V signal acquisition

Product Overview:

The WJ181 product is an IoT and industrial Ethernet acquisition module that enables transparent data exchange between sensors and networks. Can be transmitted

The analog data of the sensor is forwarded to the network.Function Introduction:

The WJ181 remote I/O module can be used to measure one analog signal.

1. Analog signal input

12 bit acquisition accuracy, one analog signal input. All signal input ranges have been calibrated before the product leaves the factory. During use, users can also use it in various ways

Convenient self programming calibration. Please refer to the product selection for specific current or voltage input range.

2. Communication Protocol

Communication interface: RJ-45 network interface. The two indicator lights at the network port position, the Link light (green light) stays on and the Data light (yellow light) stays on after the network cable is plugged in.

Communication protocol: Adopting MODBUSTCP protocol to achieve industrial Ethernet data exchange. It can also communicate with modules through TCP sockets.

Network cache: 2KByte (for both sending and receiving)

Communication response time: less than 10mS.

3. Anti interference

There is a transient suppression diode inside the module, which can effectively suppress various surge pulses and protect the module

WJ181 General Parameters:

(Typical @+25 ℃, Vs is 24VDC)

Input type: current input/voltage input

Accuracy: 0.1%

Temperature drift: ± 50ppm/℃ (± 100ppm/℃, maximum)

Input resistance: 150 Ω (4-20mA/0-20mA/0- ± 20mA current input)

300 Ω (0-10mA/0- ± 10mA current input)

1.5K Ω (0-1mA/0- ± 1mA current input)

Greater than 200K (5V/10V voltage input)

Greater than 1M Ω (input voltage below 2.5V)

Bandwidth: -3dB 10Hz

Conversion rate: 16FPS (factory default value, users can modify the conversion rate on the webpage). ）

You can set the AD conversion rate to 2SPS, 4SPS, 8SPS, 16SPS, 32SPS, 50SPS, 80SPS, 100SPS by sending commands

Common mode rejection (CMR): 120dB (1k Ω) SourceImbalance@50 /60Hz）

Norm suppression (NMR): 60dB (1k Ω) SourceImbalance@50 /60Hz）

Input protection: overvoltage protection, overcurrent protection

Communication: MODBUS TCP communication protocol or TCP socket character protocol or MQTT protocol

Web page: Supports web access module and web page setting module parameters.

Interface: RJ-45 network interface.

Communication response time: 10ms maximum

Working power supply:+8~32VDC wide power supply range, with internal anti reverse and overvoltage protection circuits

Power consumption: less than 3W

Working temperature: -45~+80 ℃

Working humidity: 10~90% (no condensation)

Storage temperature: -45~+80 ℃

Storage humidity: 10~95% (no condensation)

Dimensions: 106mmx59mmx37mm

Product manual：https://www.wayjun.cn/d/en.html