Manuals > Device Connection Guide > Mitsubishi Electric > Public Protocol (Ethernet) > Q/L Series > Connection Example [Using the Q Series CPU Built-in Port]

overview

This is an example of a connection using the built-in Ethernet port of the QnUDE series and the CPU. If you want to connect using the Ethernet port of the CPU of the QnUDE, QnUDEH, L series, etc., please refer to this page.

Model used

item	Model etc.
PLC	Q26UDEHCPU
Communication Unit	CPU Attached Port

Configuration environment

item	environment
OS	Windows7 Professional 64Bit
tool	GX-Developer Ver8.114U

Configuration details

item	setting	Setting items	Configuration Example
PLC side settings	Set with tools	IP address	192.168.0.100
		Subnet Mask Pattern	255.255.255.0
		Default Router IP Address	192.168.0.200
		Communication data code setting	Binary Code Communication
		RUN Write permission	Allow
		protocol	UDP
		Open Method	MC Protocol
		Port number	8192 (2000 hex)
PC settings	Unit Settings	IP address	192.168.0.1
		Port number	Automatic
		Communication Protocol	UDP (Binary code communication)
	Folder and communication test settings	Network Number	0
		PC Number	FF
		Request unit I/O number	03FF

* Most of the settings on the computer will be adjusted to match the settings on the unit.

When setting the port number in GX-Developer, set it in hexadecimal. You can also set the port number freely. The port number on the PC side and the PLC side can be the same.

PLC side settings

Set up "Q26UDEHCPU". Settings are done using GX-Developer etc.

1.Start GX-Developer and create a new project.

2.Open the menu "Online" - "Connection Destination" and confirm that you can communicate with PLC.

3.Double-click "Parameter" - "PC Parameter" in the tree to display the "Parameter Setting" dialog as shown below, select "Built-in Ethernet Port Setting" and set as follows.
c_plc_0119

setting	Setting contents
IP address	192.168.0.100
Subnet Mask Port	255.255.255.0 (set the default gateway to be used)
Default Router IP Address	192.168.0.200 (Set the IP address of the router you are using)
Communication data code setting	Binary Code Communication
Allow writing during RUN (KFTP and MC protocols)	Check it

4.Click "Open Settings" to display the Open Settings screen.
c_plc_0120

5.Set the following from the open settings screen
c_plc_0121

setting	Setting contents
protocol	UDP
Open Method	MC Protocol
Local station port number	2000

Please note that when setting the port number in GX-Developer, it is set in hexadecimal.

6.Click "Finish setting" to close the network parameter dialog. After that, go to "Online" - "Write to PC" to write the parameters to the PLC.
c_plc_0122

After setting the parameters, you must turn off the power to the PLC once to reflect the settings. Although a remote reset may be possible from the tool, we recommend turning off the power once to ensure that the settings are reflected.

If you do not press the Finish Settings button, the settings will not be reflected, so be sure to press the Finish Settings button before writing.

PC settings

Use the Server application to connect to the PLC for which you have set up communications.

1.Right-click "Application" - "Driver" in the tree and select Add Driver.

2.Select the following units from the displayed driver list and add them:
If you want to communicate using the ASCII protocol, select the ASCII protocol.
c_plc_0113

3.Open the properties of the added unit (U01) and click Communication Settings.
c_plc_0114

4.Configure the following in "PC Settings"
c_plc_0123

setting	Setting contents
Computer IP address	192.168.0.1
Computer port number	Automatic

For models that directly connect to an Ethernet port such as QnUDE, you cannot specify the port number of the connection destination, so the port number on the PC side is "Automatic".

5.Set the following in "Unit side settings"
c_plc_0116

setting	Setting contents
Unit IP Address	192.168.0.100
Unit Port Number	8192 (specified in decimal)

6.Select "Ping Test" to check if the ping goes through normally.
If you see a message like "Ping test is success～", the test was successful.

7.Select the protocol in "Communication Details"
c_plc_0117

setting	Setting contents
protocol	UDP (recommended)

8.Perform a connection test to check the connection
c_plc_0118

If a message such as "Connection OK" is displayed, the connection is confirmed to be OK.

The CPU monitoring timer can be set in the "Other detailed settings" in the unit's communication settings dialog.

The CPU monitoring timer is the waiting time on the PLC side from receiving a command from the computer until returning a response to that command.

If you are referencing other PLC devices via MELSECNET or CC-Link, be sure to set an appropriate time (if you set the CPU monitoring timer to 0 and the other PLC goes into a state where its power is cut off, Ethernet communication itself will be disabled). For details, refer to the PLC manual.

For information on the network setting parameters when checking the connection, please refer to "About network setting parameters".

Connection example [Using Q Series CPU built-in port]

Connection example [Using Q Series CPU built-in port]