Rockwell-automation 2711P Creating Modbus Applications Manual de usuario descargar pdf (Pagina 29)

Publication 2711P-UM002B-EN-P - March 2007

Configuring KEPServer Drivers for Modbus 29

Reasons to Change the Default Block Sizes include:

• The device may not support block read/write operations of

the default size. Smaller Modicon PLCs and non-Modicon

devices may not support the maximum data transfer lengths

supported by the Modbus Ethernet network.

• The device may contain non-contiguous addresses. If this is

the case and the driver attempts to read a block of data that

encompasses undefined memory, the device will probably

reject the request.

Step 9 - Set Location of the Variable Import File

The New Device - Variable Import Settings dialog sets the location of

the Concept or ProWORX variable import file the driver will use when

the automatic tag database generation feature is enabled for this

device. Refer to the KEPServer Enterprise online help for details on

how to use this feature.

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Rockwell-automation 2711P Creating Modbus Applications Manual de usuario Pagina 29