Modbus is a communication protocol developed by MODICON Inc. in 1979. It's a standard, truly open and the most widely used network communication protocol in industrial automation field. SCADA and HMI software can easily integrate serial devices together via Modbus protocol.
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nModbus
Modbus is a communication protocol developed by MODICON Inc. in 1979. It's a standard, truly open and the most widely used network communication protocol in industrial automation field. SCADA and HMI software can easily integrate serial devices together via Modbus protocol.
What is Modbus/TCP protocol ?
Modbus/TCP protocol is a variant of Modbus protocol. It was developed in 1999 to allow Internet community access Ethernet devices.
What is nModbus ?
nModbus is a C# 3.0 implementation of the Modbus protocol. It is developed and maintained on a voluntary basis and provided free of charge.
ICP DAS verified and improved the DLL based on the official released NModbus_net-2.0_1.11.0.0-source.zip.
Programmers can use the DLL released by ICP DAS to develop a Modbus application for regular Windows based PCs or WinCE based devices. The DLL features.
Modbus/RTU Master/Slave
Modbus/ASCII Master/Slave
Modbus/TCP Master/Slave
Modbus/UDP Master/Slave
Most of SCADA ( Supervisor Control And Data Acquisition ) and HMI software support Modbus. For example: Citect, ICONICS, iFIX, InduSoft, Intouch, Entivity Studio, Entivity Live, Entivity VLC, Trace Mode, Wizcon, Wonderware... etc.
What are the benefits of using Modbus and Modbus/TCP protocol ?
1. Openness, no license fees.
2. Widely supported by SCADA and HMI software
3. Easy to use
4. Easily integrate variant devices
5. Low development cost
6. Widely knowledge resource
