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Figure 8

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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 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

If you like the this Tutorial on PLC please Share this.

 

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Features of Delta HMI MMI

PLC serial drives support

We support more over twenty brands, including Delta, Omron, Siemens, Mitsubishi, etc. For new PLC, we will provide corresponding communication protocol on our website for upgrade to meet your requirement. (All other trademarks in this manual are property of their respective companies.)

Multi-language support for screen editor

Except Simplified Chinese, traditional Chinese and English these three languages, screen editor also provides those fonts that Windows® uses.

Quick execution and communication macro

It can handle complicated calculation by executing macro. User can also write communication protocol with communication macro command to connect specific system via COM port.

Rapidly USB upload/download

It will shorten upload/download time by using USB Ver1.1.

Recipes

It provides useful recipe editor that is similar to Microsoft excel for user to edit recipe easily and input multiple recipes simultaneously (size limit is 64K). When downloading multiple recipes at the same time, it can exchange by internal memory of HMI. If data has finished editing when downloading, you can download recipe individually.

Support two different PLCs connections

Built-in 2 COM ports to connect two different controllers or two same controllers simultaneously.

Support multiple PLCs connections

Connecting multiple controllers in serial by using COM2 of RS485. (Note: controller should provide RS485 interface)

On-line Simulation

After finishing editing, it can simulate on PC by connecting controller to see if it is correct.

Off-line Simulation

After finishing editing, it can simulate on PC directly (without connecting controller) to see if it is correct.

Using SMC Card to backup data

It is not necessary to use PC to download by using SMC card to backup or insert SMC card to another HMI to copy data. History list and alarm message can be also saved in SMC card and user can read these files by card reader for collecting data and printing.

Multiple Security Protection

It provides passwords to protect designer’s intellectual property rights and also for user to set user priority for important component.

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Nexgenie PLC Features Specifications

Nexgenie PLC is a compact and genius PLC suitable for small size machine control.

Highlighting Features Nexgenie PLC

1. Variety of base units and expansion units to choose from onboard digital inputs,analog  inputs and digital outputs (transistor and relay) 

2.     Up to 4 expansion units to expand up to 80 digital I/Os maximum 

3.     Configurable digital inputs in the base unit

·          Up to 6 single phase counters with software direction and start/stop control.4 counters (I00, I01, I03, I04) up to 20 KHz and 2 counters (I02, I05) up to 5KHz 

·         Up to 2 Quadrature ABZ encoders 

·         Encoder interface supports up to 10 KHz input frequency on individual phase. 

·         Additionally all high speed inputs can be individually configured for Hardware input interrupt .

·         Frequency measurement function (time period measurement with 1μs resolution) up to 5 KHz input frequency.

      4. Provides 1 Pulse Train Output channel (pulse and direction)

• 24 VDC source type

• Output frequency from 1 Hz to 2000 Hz

5. Supports interrupt events to provide fast and predictable response to external events from the field such as. digital input interrupt, counter count match, etc

·          One periodic interrupt event with 0.5/ 1 ms resolution. Periodic interrupt can be set from   0.5/ 1ms to 1250/2500 ms.

·          Up to 4 high speed counter compare interrupts

·          Up to 6 hardware input rising edge and falling edge interrupts

·          Pulse Train Output compare interrupt and Pulse Train Output done interrupt.

6. Two serial ports

• Port 1 / PG Port (RS232/485)with modem interface

• Port 2 (RS232/422/485)with modem interface

7. Transistor outputs with short circuit protection

8. Built-in Real Time Clock

9. Optional Visual Access Window (VAW) for monitoring and setting PLC data, display machine status and fault status

• 128 x 64 pixel graphics LCD with white backlit

• 4 system keys

• Supports text and graphical symbols

10. PLC input power is 24 VDC

11. Common programming platform i.e. Windows based IEC 61131-3 compatible    programming software CoDeSys

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