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OPC Server Sample Screen |
In the left area of the screen, the name of the communication interface (Ethernet, Serial, and MELSECNET) is displayed, and a setting of parameter of communication and a peculiar setting of PLC are done. This is called "Device Setting". Here, "Device" means not a real device of PLC but the alias of a logical port.
In the area at the center of the screen, registered tag information on each device (alias of a real device) is displayed. Tag information need not be set beforehand when using it by the same tag name as a real device. When the setting of scaling is done, the present value monitors from the window of the OPC Server or the alias is put on a real device, tag can be registered.
In the area under the screen, communication information and the command and the error message etc. of sending and receiving are displayed.
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Port Configuration - Setting of communication parameter - |
It sets communication parameters like protocol, IP address and port number for Ethernet, baud rate and parity for Serial.
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Device Configuration - Setting of PLC - |
It defines CPU type of accessed PLC and detailed information on the network address etc..
When redundant communication is enabled, you may construct a redundant system.
The redundant communication function is installed for redundant system.
When the trouble occurs in the communication adaptor by any chance, the communication can be continued by switching to the other adaptor.
Moreover, when the simulation mode is enabled, the client development is enabled without PLC.
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TAG Configuration - Setting of real device of PLC - |
Tag specifies a real device in PLC.
It is able to add comment and scale parameter, and select "16bits" or "32bits", "signed" or "unsigned", and "array" as data type.
Moreover, it is able to select "Increment", "Random", and "Shared memory" as operation at the simulation mode.
Tag in the OPC Server can be used as "Shared memory" to share the value between two or more OPC Clients.
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