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titleSoftware Driver

The core of the driver is provided as a C++ class that implements the initialization and communications functions.  A sample process is provided which calls the appropriate class members.

The IP address, configuration information, and data areas to be read and written are passed as calling parameters to the class functions.

The following is a list of the provided driver files.  After review of the example driver, the user is required to modify the files as indicated:

File Name

Description

Modifications

ABPlc.cpp

Driver mainline function

Modify configuration class calls for specific PLC configuration.  Modify locations to read and write data.  Modify input and output datagram structure definition

ABPlcIn.cpp

ABPlc driver initialization

Insert required global common areas. 

PlcUsr.cpp

Process received values from PLC datagram and place in user data variables.

Get application variables and store in datagra for transmission to PLC

Change as required

TpriABPlc Class Descriptions

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titleOverview

The Tsentry tpriABPlc class encapsulates the functionality required to communicate with the Allen Bradley PLC 2, PLC3, and PLC5 PLCs over a TCP/IP network.

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