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General| Brand | Danfoss |
|---|---|
| Model | Modbus RTU |
| Category | Computer Hardware |
| Language | English |
Describes risks from rotating parts, line voltage, and the need for qualified personnel.
Covers drive disconnection, grounding, unintended start prevention, and capacitor discharge delays.
Explains the manual's scope, intended audience, and objectives for users and programmers.
Outlines expected user knowledge of controllers and VLT drives for effective use.
Describes the Modbus RTU message format, master-slave communication, and error handling.
Details configuring communication speed, parity, and network address using dip switches.
Lists required VLT drive parameter settings for Modbus communication.
Specifies operating conditions and crucial safety warnings for installation.
Details steps for accessing, disconnecting, and physically removing the control card cassette.
Covers securing the option card into the cassette and wiring the necessary terminals.
Details reinstalling the control card cassette and connecting the RS-485 terminal block.
Explains the meaning of the VLT and Modbus communication status LEDs.
Describes performing a loop back test to verify the functionality of the Modbus RTU option card.
Defines the Modbus RTU message frame, including start/stop fields and character encoding.
Explains CRC error checking, coil/register addressing, and data fields.
Details how Modbus parameters, blocks, and text are translated to the Danfoss FC protocol.
Covers FC control word bits, conversion factors, and memory addressing for parameters.
Lists status coil descriptions and VLT 5000 register maps for Modbus communication.
Provides the comprehensive register map for the VLT 6000 drive for Modbus access.
Illustrates Modbus messages for starting, stopping, and controlling motor functions.
Shows Modbus communication for reading/writing drive parameters and text strings.
Lists and describes Modbus exception codes and VLT/Modbus error types.
Details functions for reading and forcing single/multiple coils.
Explains functions for reading and presetting single/multiple registers.
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