Showing posts with label SCADA. Show all posts
Showing posts with label SCADA. Show all posts
Friday, 27 January 2017
Communication between Mitsubishi FX3U PLC and SCADA via RS485BD
Hi 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 |
 |
| 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 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:
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
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| Tag Addressing Parameters |
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