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8-CH Analog Signal to RS485/232 Module with Modbus


Keywords:4-20mA to RS485|0-5V to RS485|analog signal acquisition module|remote I / O module|A/D Converter|analog to RS485 module|0-10V to RS232|digital serial collection|data acquisition

WAYJUN Hot products:WJ28 series 8 inputs channel Current/Voltage signal to RS485/232 Converter,24 Bits AD data acquisition,CE approved

>> Eight analog signal acquisition, isolated converter RS-485/232 output
>> 24-bit AD converter, accuracy>0.05%
>> 4-20mA/0-20mA current signal or 0-5V/0-10V voltage signal input
>> RS-485/232 interface can be programmed calibration module accuracy
>> Signal input / output:3000VDC isolation
>> Wide supply range: 8 ~ 32VDC
>> High reliability, easy programming, easy to apply
>> Standard DIN35 rail mounting 
>> User-programmable settings module address, baud rate, etc.
>> Support the Modbus RTU protocol
>> Low cost, small size modular design
>> Size:120x60x43mm
Typical applications:
>> signal measurement, monitoring and control
>> RS-485 remote I / O, data acquisition
>> application of intelligent building control, security engineering
>> industrial automation control system, the RS-232/485 bus
>> Industrial signal isolation and long-term transmission
>> equipment operation and monitoring
>> measurement of sensor signals
>> the industrial data acquisition and recording
>> medical, industrial and product development

Product List:

                                WJ28  -  U(A)□  -   
Input voltage or current signal                         Communication Interface
U10-5V                   A10-1mA                   485: RS-485 output interface
U20-10V                A20-10mA                 232: RS-232 output interface
U30-75mV             A30-20mA            
U40-2.5V                A44-20mA    
U50-±5V                 A50-±1mA                         
U60-±10V               A60-±10mA                         
U7: 0-±100mV         A70-±20mA
U8: user-defined     A8user-defined

Selection Samples:
Part No.:WJ28-A4-485     (means 8 channels 4-20mA input,ouput is RS485 interface)
Part No.:WJ28-U1-232    (means 8 channels 0-5V input,output is RS232 interface)
Part No.:WJ28-U2-485    (means 8 channels 0-10V input,output is RS485 interface)
Part No.:WJ28-(A4)6(U2)2-485 (means 6 channels 4-20mA input,2 channels 0-10V                                               input,output is RS485 interface)

How to set Modbus RTU communication protocol:

 Module default protocol is character communications protocol. If you need to set the module to Modbus RTU protocol, please follow these settings:

1. Put INIT switch to INIT position.
2. Connect the power cord and the communication interface cable.
3. Turn on the power, the module enters the default state automatically, address 00, baud rate 9600.

4. Wait 5s, module is initialization.

5. Send the command
$00P1(cr), check the response, if is !00 (cr), set successfully.
6. Turn off the power, INIT switch to the
NORMAL position.
7. The module has been set to the Modbus RTU protocol mode successfully.

Note:when you order ,please choose your input and output or note your Part No..

Download Datasheet : WJ28 series 8 Channels AD Converters.pdf 


Add to Cart:

  • Model: WJ28 - U(A)□ - □
  • Shipping Weight: 180g

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