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Digital Electronics Corporation Memory Link

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  • 2019-02-20 11:25:10

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1Digital Electronics Corporation Memory Link Driver1System Configuration.......................................................................................................32Selection of Driver............................................................................................................93Example of Communication Setting...............................................................................104Setup Items....................................................................................................................185Cable Diagram...............................................................................................................346Supported Device...........................................................................................................667Device Code and Address Code....................................................................................678Error Messages..............................................................................................................689Memory Link Command (Serial Communication)..........................................................7310Sample Program (Serial Communication)....................................................................14311Memory Link Command (Ethernet Communication)....................................................15712Memory Link API (Ethernet Communication)...............................................................21113Sample Program (Ethernet Communication)...............................................................245Memory Link Driver GP-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."1 System Configuration" (page 3)2Selection of External DeviceSelect a model (series) of the External Device to be connected and connection method."2 Selection of Driver" (page 9)3Example of Communication SettingsThis section shows setting examples for communicating between the Display and the External Device."3 Example of Communication Setting" (page 10)4Setup ItemsThis section describes communication setup items on the Display.Set communication settings of the Display with GP-Pro EX or in offline mode."4 Setup Items" (page 18)5Cable DiagramThis section shows cables and adapters for connecting the Display and the External Device."5 Cable Diagram" (page 34)OperationMemory Link Driver GP-Pro EX Device/PLC Connection Manual31System ConfigurationWhen using the Memory Link, the connection configuration is shown below.Serial•1:1 Connection•1:n ConnectionEthernet•1:1 Connection•1:n Connection•When LT-4*01TM / LT-Rear Module is included in the connection configuration, Polarization resistance of the LT-4*01TM / LT-Rear Module is set to stabilize a signal level in the communication line. (Polarization resistance is different from terminal resistance.)•When one LT-4*01TM / LT-Rear Module is used, set "560" (default).•When two or more LT-4*01TM / LT-Rear Modules are used, set "560" (default) for one of the LT-4*01TM / LT-Rear Module and set "None" for the other.•Polarization resistance can be set in offline mode only. To display the setup screen, touch [Device/PLC Adjust] of the [Peripheral Settings] tab in the offline mode.ExternalDeviceDisplayMax 32 units(including External Device)ExternalDeviceDisplayDisplayDisplayHUBExternalDeviceDisplayHUBExternalDeviceDisplayDisplayDisplayMemory Link Driver GP-Pro EX Device/PLC Connection Manual4•n:1 Connection•n:m Connection•When connecting UDP, the greater the number of units connected, the greater the communication load increases.•There is the case in which the Display can not receive all commands, when simultaneously, the command is transmitted from multiple External Devices in the UDP connection. Please process the retry in the External Device side.•Connection can be defined with an IP address or port number.When defining the connection, the maximum number of UDP connection units is 32 and that for TCP is 16.•When defining the UDP connection, refer to the  UDP Connection Definition."  UDP Connection Definition" (page 29)•When defining the TCP connection, refer to the  TCP Connection Definition."  TCP Connection Definition" (page 26)ExternalDeviceExternalDeviceExternalDeviceDisplayHUBUDP maximum connection: No limitTCP maximum connection: Up to 16 unitsExternalDeviceExternalDeviceExternalDeviceDisplayDisplayDisplayHUBUDP maximum connection: No limitTCP maximum connection: Up to 16 per display unitMemory Link Driver GP-Pro EX Device/PLC Connection Manual5•When using multiple portsExternalDeviceDisplayHUBCOM1COM2ExternalDeviceExternalDeviceUDP maximum connection: No limitTCP maximum connection: Up to 16 per display unit

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