Communication between Mitsubishi FX3U PLC and SCADA via RS485BD

Communication between Mitsubishi FX3U PLC and SCADA via RS485BD

Hello Friends, Here i want share with you a tutorial on how to establish Communication between Mitsubishi FX3U PLC and Elipse SCADA via RS485 BD 

The required Items for the setup is as follows

 

Sr. no.
Material
1
PLC Type : FX Series
2
CPU      : FX3U
3
Module   : FX3U RS485BD
4
SCADA Make : Elipse
5
SCADA Type : 20/300/ Unlimited Tags
6
Other

 

Communication between Mitsubishi FX3U PLC and SCADA via RS485BD
Communication between Mitsubishi FX3U PLC and SCADA via RS485BD
Figure Connection
between PC(SCADA) & PLC(FX3U)
 The required cables are as follows

 

Sr. no.
Item
Description
1
Medoc cable (MITSU-CAB2A)
Prog. cable for FX PLC
2
Converter Cables *1
Comm. Cable for PC ,PLC & Converter
 *1 To connect the SCADA to the controller the RS 232 to RS 485 Converter  is used. The Converter is having RS422/485 port for connecting to PLC
& RS232 port on other side for connection to PC.

 

As the FX-485BD Port is used, PLC parameter settings are required on PLC side.
PLC Parameter Configuration for Channel1:
1. Baud Rate: 9600.
2. Data Bits: 7 bits
3. Parity : Even
4. Stop Bit: 1 bit
5. Sum Check: Yes
6. Transmission Control: Without CR, LF
7. H/W Type: RS485
8. Station No.: 01
PLC Communication Parameter Settings using GX Developer:

 

PLC Communication Parameter Settings using GX Developer
 SCADA Program settings
 SCADA Driver Details:

 

Driver
MELSEC-A.dll
Version
1.02
Latest Update
2004.10.20
Driver Help
Melsec-A_US.pdf
Driver Setting Parameters:
P1: 1 (Comm. Port)
P2: 3721(Comm. Parameters: 9600 bps, 7 data bits, Even
Parity & 1 stop bit)
P3: 300 (Timeout in milliseconds)
P4: 10 (For RS485)
Other needed Configuration is done through “Extra  Configuration “Dialog as follows:
• Snap shot of Driver Settings in Elipse SCADA software
Step 1: Enter the Driver Parameters P1-P4.

 

Driver Parameters
Step 2: Click on “Extra” button to edit settings.
 Step3: In “Extra” menu select “Protocol” option to edit Protocol  Settings.
“Protocol” option
 Tag Addressing Parameters:
The Tags are generated by using N1-N4 parameter settings as follows:
N1: Station Number (e.g.: 1)
N2: CPU Number (normally 255)
N3: Variable Type (e.g.: 14 for D Register)
N4: Variable Address (e.g.:10 for D10 Register)
Scan: User Defined
• Snap shot of Tag Addressing Parameters in Software

 

Tag Addressing Parameters

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2 thoughts on “Communication between Mitsubishi FX3U PLC and SCADA via RS485BD”

  1. Brother , i want to attach seven plc in a scada .
    PLC mitsubishi having 485 bd card.
    scada is indusoft .

    can you help me out.
    or if i can change scada to eclipse. can you share your project or help me out.
    you will be a life savior .

    Zubair(at)hotmail.com

    Reply
  2. Brother , i want to attach seven plc in a scada .
    PLC mitsubishi having 485 bd card.
    scada is indusoft .

    can you help me out.
    or if i can change scada to eclipse. can you share your project or help me out.
    you will be a life savior .

    Zubair052(at)hotmail.com

    Reply

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