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.

Delphi开发的modBus通信库，采用TCP/IP协议，可用于实现MODBUS上的主从通信编程。- The library provides components to implement both a ModBus master and a Modbus slave, and is based on the Indy component set (both Indy 9 and 10 are supported)