4-Channel DI Switch Detection Counter (MQTT / WiFi)
Product Overview: The WJ162 is a 4-channel switch input module supporting NPN and PNP inputs. Each DI channel can be utilized as a counter or for frequency measurement, featuring built-in MQTT and Modbus TCP support for seamless industrial IoT integration.
Core Features
4-channel switch input, supporting NPN and PNP inputs
Each DI channel serves as a counter or frequency measurement tool
Supports MQTT communication protocol and Modbus TCP
Configurable pulses per revolution for accurate speed measurement
Built-in web page function for real-time data query and parameter setting
Wide power supply range: 8~32VDC
Standard DIN35 rail installation for centralized wiring
Compact design: 79 x 69.5 x 25mm
Functional Introduction
1. Switch Signal Input: 4-channel input compatible with dry contact NPN and wet contact PNP.
2. Communication Protocol: Supports MQTT for cloud connectivity (Alibaba Cloud, Tencent Cloud, Huawei Cloud, OneNET, private clouds) and MODBUS TCP for industrial Ethernet exchange.
3. Anti-Interference: Equipped with internal transient suppression diodes to protect against surge pulses and ensure site reliability.
4. Speed Measurement: Capable of Hall sensor speed measurement and motor speed tracking via pulse counting.
Frequently Asked Questions
What communication protocols does the WJ162 support?
The module supports both MQTT communication protocol for IoT cloud platforms and Modbus TCP protocol for industrial Ethernet data exchange.
Can this module be used for motor speed measurement?
Yes, it features 4-channel frequency and pulse counting capabilities, and users can set the number of pulses per revolution for precise speed measurement.
How do I configure the module settings?
The WJ162 has a built-in web page function. Users can access the module via a web browser to query data and set parameters like IP addresses and MQTT configurations.
What types of sensors can be connected to the DI channels?
The 4-channel switch inputs are highly versatile, supporting NPN/PNP sensors, dry contacts, Hall sensors, and photoelectric sensors.
Is the module suitable for harsh industrial environments?
Yes, it is designed for reliability with a working temperature range of -45 to +80 ℃ and features internal transient suppression diodes for surge protection.
What is the required power supply for the WJ162?
The module operates on a wide power supply range of +8~32VDC and includes internal anti-reverse and overvoltage protection circuits.
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