Delphi的ModbusTcp开发控件，需要Indy支持，包括主站和从站的控件-he Delphi Modbus library is a Modbus Class I Delphi implementation of a Modbus master and slave over TCP/IP (ModbusTCP). Serial I/O (RTU or ASCII) is not supported.

The Delphi Modbus library is a Modbus Class I Delphi implementation of a Modbus master and slave over TCP/IP (ModbusTCP).

modbusTCP组件，适用于各版本delphi，包括client和server(The modbusTCP component applies to all versions of Delphi, including client and server)