• Mitsubishi Melsec serial channel. For information about Mitsubishi Melsec serial channel configuration. Mitsubishi Melsec PLC Tag. For information about Mitsubishi Melsec device configuration. Serial Communications. For background information on serial communications. Mitsubishi Melsec Driver. For information about the Mitsubishi Melsec Driver.
• A library of over 250,000 device drivers, firmware, BIOS and utilities for Windows.

If your device does not appear in this list, reseat the cable connected to your computer or try a different port. If your audio device shows up as an Unknown device or has a yellow caution symbol, you will need to uninstall the device and then reinstall the latest driver (see Driver Reinstall below).

Introduction

To communicate with Fernhill SCADA, the FX PLC Device will require a communication module. The communication module needs to support the Computer Link protocol.

These communication modules are known to support the Computer Link protocol, and will work with Fernhill SCADA:

The rest of this article uses the name FX Serial Module to refer to any of the above modules.

Connection Cables

RS-232 Connection

These modules support RS-232 communications:

• FX-232ADP
• FX0N-232ADP
• FX1N-232-BD
• FX2N-232-BD
• FX2NC-232ADP
• FX3G-232-BD
• FX3U-232-BD
• FX3U-232ADP

The serial port on a PC is usually a 9 pin D-subminiature connector. To connect one of these modules to a PC, a connection cable with this wiring is required:

Note: All other pins not shown in the above diagram have no connection.

RS-422 Connections

These modules support RS-422 communications:

• FX-485ADP
• FX0N-485ADP
• FX1N-485-BD
• FX2N-485-BD
• FX2NC-485ADP
• FX3U-485-BD
• FX3U-485ADP

Use this table to select the appropriate wiring between the screw terminals on the module and common RS-422 adapters:

For more information about connecting a PLC Device to a computer using an RS-422 link, see RS-422 Communication with PLC Devices.

Configuring Serial Communications

Setting up a serial communication link can be difficult because of the wide variety of communication options. For example:

• Baud Rate
• Frame Format
• Protocol

For Fernhill SCADA to communicate with an FX Serial Module, both need use the same communication options. There are a two main ways to achieve this:

• The easiest way is to use the Mitsubishi Melsec Serial Autodetect Wizard. Using the options you select, the wizard will try different settings to work out the correct Fernhill SCADA configuration.
• Manually configure Fernhill SCADA and the FX Serial Module to use the same communication options.

Manual Configuration

The FX Serial Module can be configured using one of two methods:

• Using PLC code to write specific values to registers, or
• Through project parameters in GX Developer

Note: Not all PLC ranges support configuration through parameters

Fernhill SCADA is configured using properties of the Channel and PLC tags:

• The Mode and CommFormat properties on the Mitsubishi Melsec serial channel.
• The StationNumber property on the Mitsubishi Melsec PLC Tag.

Using PLC Code to Setup FX Serial Modules

A typical PLC program to setup an FX serial module is:

Note: The above program configures channel 1 to use the Computer Link protocol. The serial format is 9600 Baud, 7 data bits, 1 stop bit and Odd parity. The station address is 0 (zero).

These registers store the configuration parameters for the FX Serial Modules:

Some FX PLC types only support one serial port (Channel 1).

Example values for register D8120 or D8420 and the corresponding configuration in Fernhill SCADA:

Mitsubishi Port Devices Driver Vga

Further Information

Mitsubishi Port Devices Driver

For how to automatically configure Fernhill SCADA to communicate with a Mitsubishi serial communication module.

For information about Mitsubishi Melsec serial channel configuration.

For information about Mitsubishi Melsec device configuration.

For background information on serial communications.

For information about the Mitsubishi Melsec Driver.

For the meaning of terms used in Fernhill SCADA.

Fernhill SCADA Version 3.66. Copyright © 2012-2021 Fernhill Software Ltd: All rights reserved.

For most devices, the Ports device setup class and the Serial function driver provide the functionality required to operate serial ports and COM ports. To install serial ports and COM ports using these system-supplied components, do the following:

• Provide an INF file that specifies the Ports device setup class and the Serial function driver as the service for the port.

• To configure a serial port as COM port, comply with the requirements that are defined in Configuration of COM Ports.

For more information about installing serial ports and COM ports using the Ports device setup class and the Serial function driver, see the following topics:

If you do a custom installation of a COM port, you must comply with the COM port requirements that are defined in Configuration of COM Ports.