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Digital Electronics CorporationGeneral Ethernet

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1Digital Electronics CorporationGeneral Ethernet Driver1What is General Ethernet?...............................................................................................32System Configuration.......................................................................................................53Selection of External Device............................................................................................64Example of Communication Setting.................................................................................75Setup Items......................................................................................................................96Supported Device...........................................................................................................137Device Code and Address Code....................................................................................148Error Messages..............................................................................................................159Direct Communication Function.....................................................................................1910Sample Program............................................................................................................28General Ethernet DriverGP-Pro EX Device/PLC Connection Manual2IntroductionThis manual describes how to connect the Display and the External Device (target PLC).In this manual, the connection procedure will be described by following the below sections:1System ConfigurationThis section shows the types of External Devices which can be connected and SIO type.�"2 System Configuration" (page 5)2Selection of External DeviceSelect a model (series) of the External Device to be connected and connection method.�"3 Selection of External Device" (page 6)3Example of Communication SettingsThis section shows setting examples for communicating between the Display and the External Device.�"4 Example of Communication Setting" (page 7)4Setup ItemsThis section describes communication setup items on the Display.Set communication settings of the Display with GP-Pro EX or in off-line mode.�"5 Setup Items" (page 9)OperationGeneral Ethernet DriverGP-Pro EX Device/PLC Connection Manual31What is General Ethernet?1.1OverviewGeneral Ethernet driver is not a special driver corresponding to only the specific Ethernet communications device connected with Display but generally a drivers availableThe content of communication packet to be transmitted generates data on the memory table of Display by D script and the ladder program (Hereafter, it is expressed, "Script etc.") of Display.The driver transmits the data generated on the memory table from the Ethernet port of Display, and stores the data received to the Ethernet port of Display in the memory table.The communication packet is made the Script etc. as above, and this driver enables the data sending and receiving with all the Ethernet communications equipments by mounting only the sending and receiving function to use the Ethernet port.The communication protocol supports UDP/IP and TCP/IP.The Ethernet communications device comes by maximum 8 connection in both UDP/IP and TCP/IP.However, it is Script etc. as for the specification of the destination IP address and port No.. The connection with the communicated device is closed, and work to open the connection to the device at the following connection destination is needed when doing while changing. To close the connection in this method once when communicating with another device, connected the number is not limited.•General Ethernet driver features a memory link method. You can set a single memory link driver for each Display. Two or more memory link drivers are not available for simultaneous use.For more information on the memory link method, see the GP-Pro EX Device/PLC Connection Manual. In the Manufacturer’s List section, see "Communication with External Device".General Ethernet DriverGP-Pro EX Device/PLC Connection Manual41.2GlossaryTermDefinition and DescriptionMemory tableMemory table of the Display inside. This driver reads and writes data on this memory table. The system area has a domain of 0000 to 9999 16 bits width.Script etc.It is called "Script etc." generically of the function to read and write data on the memory table in this manual. "D script" and "Ladder program" are concretely indicated. Ring bufferRing buffer is a memory area where data is temporarily maintained by the FIFO form. It is called Ring buffer it is possible to read out data to the toroidal. It forms on the memory table of Display in this driver, and it uses it as receiving buffer. To manage the data position in receiving buffer, two pointer of GET pointer and PUT pointer is managed. GET pointerGET pointer is a pointer that indicates the place of data in which the Script etc. of the data that should be read next in Ring buffer. The offset value from the first address in the data area of Ring buffer is maintained in this driver. After the data of the area that peels off and , GET pointer indicates is read, GET pointer is advanced to the read position.PUT pointerPUT pointer is a pointer that indicates the place of data in which this driver should write the following receive data in Ring buffer. The offset value from the first address in the data area of Ring buffer is maintained in this driver. After writing receive data in the area that PUT pointer indicates, this driver advances PUT pointer to the written position. Receive function control areaIt defines it in a fixed area of the memory table of Display in the area where the administrative information of receiving buffer of this driver was consolidated. Send function control areaIt defines it in a fixed area of the memory table of Display in the area where the administrative information of sending buffer of this driver was consolidated. System data areaIt is an area where system information on Display in the memory table of Display is reflected. A display number of Display and various system information on calendar information etc. can be read and written. It is formed at fixed address (0000 to 0019) in the memory table.Special relayIt is formed at fixed address (2032 to 2047) in the area in the memory table where Display system information was reflected as well as the system data area.9000 areaInternal processing information etc. on the indicator like data and the communication scanning time etc. of the past of the line chart are stored. A part of area that can be set exists, too. User areaThey are the areas other than "System data area", "Special relay", and "9000 area" to reflect system information on Display in the memory table of Display. It is a memory area that the user can freely use. General Ethernet DriverGP-Pro EX Device/PLC Connection Manual52System ConfigurationGeneral Ethernet driver doesn't so need the performance of the communication such as the order terminals, and make device that the communication procedure is easy a target. �Connection Configuration•1:1 Connection•1:n Connection*1The Ethernet communications device comes by maximum 8 connection in both UDP/IP and TCP/IP. However, it is Script etc. as for the specification of the destination IP address and port No.. The connection with the communicated device is closed, and work to open the connection to the device at the following connection destination is needed when doing while changing. To close the connection in this method once when communicating with another device, connected the number is not limited.•n:m ConnectionAGPPLCHUBAGPPLCHUBPLCThe max number of PLC*1*AGPHUBPLCAGPAGPPLCPLCConnection number depends on a connected device

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