About Anybus Communicator; Serial Protocol Communication - HMS Networks Anybus Communicator ABC3028 User Manual

About Anybus Communicator

4 About Anybus Communicator
4.1

Serial Protocol Communication

4.1.1 Serial Protocol Types
The gateway features three distinct modes of operation for the subnetwork communication,
called Modbus RTU, Custom Request/Response and Custom Produce/Consume.
Modbus RTU
By default the Communicator uses the Modbus RTU serial protocol.
The Communicator uses Modbus transactions defined by the Modbus standard.
The Communicator acts as a client on the subnetwork, and the serial communication takes place
in a request/response fashion.
The nodes on the network are not permitted to issue messages unless they have been addressed
by the Communicator first.
Custom Request/Response
In this mode, you can define your own serial transactions to handle a wide range of custom serial
protocols.
The Communicator acts as a generic serial client on the subnetwork.
The serial communication takes place in a request/response fashion.
Custom Produce/Consume
In this mode, you can define your own serial transactions to handle a wide range of custom serial
protocols.
The Communicator may consume and/or produce messages on the subnetwork.
There is no client-server relationship between the nodes on the network, messages are
spontaneously produced or consumed when data is available.
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Anybus Communicator User Manual
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SCM-1202-162 1.1 en-US