Configuring an I/O Tag

Driver Modicon Modbus

Configuring an I/O Tag

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Driver's I/O Tags are Tags that allow communication with devices.

I/O Tags allow reading and writing Modbus registers from and to slave devices, by using Modbus protocol functions, or even special functions. This Driver does not differentiate between Block and simple Tags, in case of I/O Tags, that is, I/O Tags work the same way as a Block with a single Element.

Data is read from a device using protocol-supported formats, that is, registers with integer values of 16 bits, bytes, or sets of bits, depending on the protocol's function used. For more information about protocol functions, please check specifications at protocol's official website.

I/O Tags can be configured in two ways, described in the next topics:

·String Configuration: This is the newest method that can be used with Elipse E3, Elipse Power, and Elipse OPC Server, recommended for new projects. It is not supported by Elipse SCADA

·Numerical Configuration: Old method used in Elipse SCADA

 
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