Setting and Operation of User Connection
4.1 Configuration Concerning Open Process
4.1.1 Connection of the FP7 CPU Unit
Operation of the FP7 CPU unit
• The FP7 CPU unit opens a virtual communication line with devices in accordance with user
connection information (open method, communication method, port number, partner unit IP
address) in the configuration menu.
• One FP7 CPU unit can open virtual communication lines for up to 16 connections.
• Lines for each connection can be used in different connection methods (TCP or UDP), and
in different operation modes (MEWTOCOL-DAT, MEWTOCOL-COM, MODBUS TCP,
general-purpose communication).
• Once a line is connected, PLC and devices can communicate in the specified operation
mode. The connection status can be confirmed using the operation device (X80 - X9F).
4.1.2 Specifying Use of Connection
• Among the 16 connections, set the setting items for the user connection to be used to "Use
these settings". By default, "Do not use these settings" is selected.
• In the case of client connection, when "Use these settings" is selected, and if connection is
failed, it is regarded as a communication error.
4.1.3 Open Method (Server/Client)
Select the open method for establishing connection.
Setting item Operation
Server connection (unspecified partner) Wait for connection from an unspecified client.
Server connection (specified partner) Wait for connection from a specified client.
Client connection Connect to the partner port of server connection.
4.1.4 Open Method (Auto/Manual)
The operation varies according to settings. Select "Auto OPEN".
Settings Operation
Auto OPEN
• When the power is turned ON, the FP7 CPU unit automatically opens a virtual
communication line with devices in accordance with user connection information (open
method, communication method, port number, partner unit IP address) in the
configuration menu.
• In the case of client connection, when connection cannot be established because the
partner device is turned OFF or for other reasons, the unit makes repeated connection
attempts at a specified interval.
• In the case of server connection, the connection status is set to open, and the unit waits
for connection from the client.
Do not auto OPEN No process
4-2
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