Without other underlying Modbus controls, the direct operation of the underlying communication code, the realization of Modbus read and write, "keep register" data, support for serial communication, TCP communication two ways. The code is for demonstration only, can be further encapsulated, and can be modified slightly for nonstandard Modbus communications. This code uses a third party control SPComm, development test environment for Delphi7+Win7, I always want to get rid of Modbus control (MBAXP Modbus Master ActiveX Control ) recently developed this DEMO and shared it with you.

Code\tao60_Modbus.cfg
Code\tao60_Modbus.dof
Code\tao60_Modbus.dpr
Code\tao60_Modbus.exe
Code\tao60_Modbus.res
Code\tao60_Modbus.skincfg
Code\uHashTable.pas
Code\Unit1.dfm
Code\Unit1.pas
第三方控件_SPCOMM.rar
Code

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