Modbus rtu vb net code

Sir I want to know that what is the rolle of the modbus rtu in the vb.net code so can you tell me the same

[Shaleen]

He buddy the class MbusRtuMasterProtocol implements the Modbus RTU protocol and the class MbusTcpMasterProtocol implements the MODBUS/TCP protocol.

In order to use one of the three master protocols, the desired protocol flavour class has to be instantiated.


Modbus is a master/slave protocol with half-duplex transmission.

One master and up to 247 slave devices can exist per network.

The protocol defines framing and message transfer as well as data and control functions.

The protocol does not define a physical network layer. Modbus works on different
physical network layers. The ASCII and RTU protocol operate on RS 232, RS 422 and

RS 485 physical networks.

The Modbus/TCP protocol operates on all physical network layers supporting TCP/IP. This compromises 10BASE-T and 100BASE-T LANs as well as serial PPP and SLIP network layers.


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