Three DI and ten DO relay outputs, RS-485/232 remote I/O module WJ71
Product features:
Three switch inputs and ten relay outputs
The level status of the input can be read through the RS-485/232 interface
The output relay status can be set through the RS-485/232 interface
Triple isolation between signal input, output, and power supply
Three inputs have one common terminal, and ten outputs are isolated from each other
Wide power supply range: 8~32VDC
High reliability, convenient programming, and easy application
Standard DIN35 rail installation for convenient centralized wiring
User programmable module address, baud rate, etc
Supports Modbus RTU communication protocol and automatic recognition protocol
Low cost, small volume, modular design
External dimensions: 120 x 70 x 43mm
Typical applications:
Level signal measurement, monitoring, and control
RS-485 remote I/O, data collection
Intelligent building control, security engineering and other application systems
RS-232/485 bus industrial automation control system
Industrial site signal isolation and long-distance transmission
Equipment operation monitoring and control
Measurement of sensor signals
Acquisition and recording of industrial site data
Product Overview:
The WJ71 product realizes signal acquisition and control between sensors and the host, used to detect switch signals or control equipment operation. WJ71 series
The product can be applied in RS-232/485 bus industrial automation control systems, switch signal measurement and control, high and low level signal measurement and output, and
Industrial site signal isolation and long-distance transmission, etc.
The product includes power conditioning, switch quantity acquisition, relay output, and RS-485 serial communication. Each serial port can connect up to 255 WJ71 series modules,
The communication method adopts ASCII code communication protocol or MODBUS RTU communication protocol, and the baud rate can be set by the code, which can be hung with control modules from other manufacturers
On the same RS-485 bus, it is convenient for computer programming.
The WJ71 series products are intelligent monitoring and control systems based on microcontrollers, with all user set addresses, baud rates, data formats, checksums
The configuration information such as status is stored in the non-volatile memory EEPROM.
The WJ71 series products are designed and manufactured according to industrial standards, with no isolation between signal inputs/outputs, strong anti-interference ability, and high reliability. working temperature
Range -45 ℃ to+85 ℃.
Function Introduction:
The WJ71 remote I/O module can be used to measure four switch signals and has four relay signal outputs.
1. Switching signal input and output
Three switch signal inputs can be connected to both dry and wet contacts. Please refer to the wiring diagram for details; Ten relay normally open contact outputs.
2. Communication protocol
Communication interface: 1 standard RS-485 communication interface or 1 standard RS-232 communication interface, specified when ordering and selecting.
Communication protocol: Supports two protocols, the character protocol defined by the command set and the MODBUS RTU communication protocol. The module automatically recognizes the communication protocol,
Can achieve network communication with multiple brands of PLC, RTU or computer monitoring systems.
Data format: 10 digits. 1-bit start bit, 8-bit data bit, 1-bit stop bit.
The communication address (0-255) and baud rate (2400, 4800, 9600, 19200, 38400, 57600, 115200bps) can be set; communication
The longest distance of the network can reach 1200 meters and is connected through twisted pair shielded cables.
High anti-interference design of communication interface, ± 15KV ESD protection, communication response time less than 100mS.
3. Anti-interference
Checksum can be set as needed. There is a transient suppression diode inside the module, which can effectively suppress various surge pulses and protect the module.
Product manual：https://www.wayjun.cn/d/
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