INGEAR.NET.ABLink Methods and Properties Data Class - Representations of different data types found in Allen-Bradley PLCs. Controller Class - A class that handles the communications with the PLCs EventCode Class - Enumerates the different codes used by the Controller Class events.. ResultCode Class - Enumerates the different codes used to define the results of the methods for the Controller, Tag, and TagGroup classes. Tag Class - A class that contains information about the tags used by the Controller Class to communicate with the AB PLCs. TagGroup Class - A class that is a collection of Tags (see Tag Class) CONTROLLER Class - A class that handles the communications with the PLCs. Properties: CPUType Sets/Returns the current Controller CPU.Type  DriverType Sets/Returns current Driver Type ErrorCode Returns the last error code for the Controller class  ErrorString Returns the last error string for the Controller class  IPAddress Sets/Returns Ethernet IP Address of Allen-Bradley Controller IsConnected Returns the connected state of Controller class  MyObject Associates a user defined object to an instance of a Controller class  Path Sets/Returns CIP Path for ControlLogix Gateway Timeout Sets/Returns the communication timeout Methods: Connect - Connects the instances of the Controller class to the Allen -Bradley device Disconnect - Disconnects Controller class connection to current device  GroupRead - Executes and optimized read for all the Tag classes in the TagGroup, or array of TagGroups GroupWrite - Executes and optimized write for all the Tag classes in the TagGroup, or array of TagGroups ReadTag - Reads an instance or an array of Tag classes from the Allen-Bradley device WriteTag - Writes a single or an array of ABLink.Tag(s) to the Allen -Bradley controller To Top EVENTCODE Class - Enumerates the different codes used by the Controller Class events. To Top RESULTCODE Class - Enumerates the different codes used to define the results of the methods for the Controller, Tag, and TagGroup classes. To Top TAG Class - A class that contains information about the tags used by the Controller Class to communicate with the PLC. Properties: Active - Gets/Sets the active state of the Tag class instance  Controller - Sets/returns the reference an instance of ABLink.Controller class  DataType - Returns one of the enumerated ATOMIC types.  ErrorCode - Returns an error code related to the last operation.  ErrorString - Returns an error string related to the last operation  Length - Sets/Returns the number of consecutive data items of the tag  MyObject - Sets/Returns a reference to user object  Name - Name - Data Table Address  Now - Sets/Returns and immediate value to the Allen-Bradley device. Unlike the .Value property which hold the value in cache until a Controller.ReadTag(), Controller.WriteTag(), Controller.GroupRead(), Controller.GroupWrite() operation, the .Now property executes an immediate read/write operation.  QualityCode - Returns a quality code related to the last operation  QualityString - Returns a quality string related to the last operation  TimeStamp - Returns time stamp of successful transaction.  Value - Set/Returns a cached value. Unlike the .Now property which immediately reads/writes the value to the Allen-Bradley device, the .Value property holds the value property in cache until a Controller.ReadTag(), Controller.WriteTag(), Controller.GroupRead() or Controller .GroupWrite() method is invoked.  To Top TAGGROUP Class - A class that is a collection of Tags (see Tag Class above). Properties: Active - Sets/returns TagGroup active state.  Controller - Controller  Count - Returns the number of Tag (see above) instances in this group  ErrorCode - Returns the Error number of the last operation.  ErrorString - Returns a descriptive string of the last error of the last operation  Methods: AddTag - Add instances of Tag classes to the TagGroup collection.  Clear - Clear out all Tags from collection. RemoveTag - Remove Tag To Top DATA CLASSES - A set of classes that describe Allen-Bradley data structures. CTR Class (COUNTER) - A class that represents the entire Allen -Bradley COUNTER structure from a type 'C' data table. BT Class (BLOCK TRANSFER) - A class that represents the entire Allen-Bradley PLC-5 BLOCK TRANSFER structure from a type 'BT' data table. TMR Class (TIMER) - A class that represents the entire Allen-Bradley TIMER structure from a type 'T' data table SC Class (SEQUENTIAL FUNCTION CHART) - A class that represents the entire Allen-Bradley PLC-5 SFC structure from a type 'SC' data table. PD Class (PID BLOCK) - A class that represents the entire Allen-Bradley PLC-5 PID BLOCK structure from a type 'PD' data table MG Class (MESSAGE BLOCK) - A class that represents the entire Allen-Bradley MSG BLOCK structure from a type 'MG' data table CTL Class (CONTROL) - A class that represents the entire Allen-Bradley CONTROL structure from a type 'R' data table. To Top Sample code for various platforms can be found at our Code Center.