Yokogawa Touch Screen GP20 - Manual (Page 147)

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IM 04L51B01-01EN
Configuring the GX/GP
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App
Explanation
Keep connection
Set whether to connect and disconnect TCP connections every time the GX/GP accesses an
external device.
If you set Keep connection to On, the TCP connection/disconnection procedure is skipped,
thereby reducing the amount of communication traffic between the devices.
However, some devices do not support this feature. Use this feature after you check the
specifications of the connected devices.
Even if Keep connection is set to OFF, if the communication interval is less than 1 s,
communication is performed as if Keep connection set to ON.
Configuring the Destination Server
Path
GX/GP: MENU key > Browse tab > Setting > Setting menu Communication (Ethernet)
settings > Modbus client settings > Modbus server settings
Web browser: Config. tab > Communication (Ethernet) settings > Modbus server
settings
Hardware configurator: Communication (Ethernet) settings > Modbus server settings
Description
Setup Item Selectable Range or Options Default Value
Server number 1 to 16 1
Server number
Set the registration number of the server.
Modbus server settings
Setup Item Selectable Range or Options Default Value
Server name
Character string (up to 64 characters, A a # 1 )
—
Port number Numeric value (1 to 65535) 502
Server name
Set the destination Modbus server name.
If the DNS is available, you can set the host name as a server name.
You can also set the IP address. In this case, the DNS is not required.
Port number
Set the port number of the selected server.
Unless specified otherwise, you do not need to change this number.
1.16 Configuring the Ethernet Communication Function