BONFIGLIOLI Active Cube User Manual

Register value
This field is used for saving the 32-bit parameter value.
Parameter values with decimal places are transferred without decimal point. Depending
on the number of decimal places, the values are multiplied by 10, 100 or 1000.
Example:
A frequency value of 123.45 Hz is to be transferred. The actually transferred numerical value is 12345,
i.e. 0x3039 in the hexadecimal system.
Exception condition code
The following exception condition codes are possible:
2 INVALID DATA ADDRESS • Parameter unknown
3 INVALID DATA VALUE • Number of bytes in data field too small or too high
4 SLAVE DEVICE ERROR • Error when writing parameters
For a description of the exception condition codes, refer to Chapter 7.2.9 “Exception condition codes”.
For an example of a Modbus RTU telegram, refer to Chapter 9.2.2.
7.2.5 Function code 100 (=0x64), read 32-bit parameter
Request:
MBAP header
Address
1 byte
1 – 0xF7 (=247)
Function code
1 byte
0x64
Start address (dataset / para. no.)
2 bytes
0x0000 – 0x963F
Response:
MBAP header
Address
1 byte
1 – 0xF7 (=247)
Function code
1 byte
0x64
Register value (parameter value)
4 bytes
0 – 0x FFFF FFFF
Exception condition response:
MBAP header
Address
1 byte
1 – 0xF7 (=247)
Error code
1 byte
0xE4
Exception condition code
1 byte
2, 3 or 4
Start address
This field is used for saving the parameter number and dataset number. The parameter number is in
the range between 0 and 1599 and is saved in the 12 least significant bits. The dataset number is in
the range between 0 and 9 and is saved in the 4 most significant bits.
Example:
Parameter 372 (hex. 0x174), dataset 2 (hex. 0x2) is saved as hex. 0x2174.
Start address
Data set
Parameter number
Bits
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
For the above example:
Hex.
0
0
1
0
0
0
0
1
0
1
1
1
0
1
0
0
Bin.
2
1
7
4
10/13
ACU Modbus/TCP 33

BONFIGLIOLI Active Cube Specifications

General

Brand	BONFIGLIOLI
Model	Active Cube
Category	Inverter
Language	English

Summary

GENERAL SAFETY INSTRUCTIONS AND INFORMATION ON USE

Designated use

Specifies the inverter's intended design and use in industrial plants and machines.

Misuse

Residual risks

Details hazards that cannot be eliminated despite safety-compliant design, including electrical, thermal risks.

Operator's/operating staff's responsibilities

Organizational measures

Handling and installation

Electrical connections

Safe operation

Outlines safety measures during operation, including cover checks and avoiding unauthorized modifications.

Maintenance and service/troubleshooting

Describes procedures for maintenance, inspections, and repairs, emphasizing qualified personnel.

First commissioning

Assembly/disassembly of communication module

Assembly

Details the process for installing the CM-Modbus/TCP communication module into the frequency inverter.

Disassembly

Modbus/TCP interface

Communication modules

Describes the CM-Modbus/TCP and CM-Modbus/TCP-2P modules and their RJ45 ports.

Setup

Operating behavior in the case of a communication error

Protocol

Supported function codes

Lists Modbus function codes used for reading and writing 16-bit and 32-bit values.

PARAMETER ACCESS

Handling of datasets / cyclic writing of parameters

Handling of index parameters / cyclic writing

EXAMPLE MESSAGES MODBUS/TCP

16-bit access

Provides examples of Modbus/TCP telegrams for reading and writing 16-bit parameters.

32-bit access

Demonstrates Modbus/TCP telegram examples for reading and writing 32-bit parameters.

MOTION CONTROL INTERFACE (MCI) / MOTION CONTROL OVERRIDE (MCO)

Motion Control Override

Functions of Motion Control Interface (MCI)

Covers reference systems, modes of operation, and parameters for MCI.

CONTROL OF FREQUENCY INVERTER

Control via contacts/remote contacts

Details control methods using digital inputs and remote contacts, including status word bits.

Control via state machine

Explains control via the state machine using the control word and status word.

Configurations without Motion Control

Motion control configurations

Explains how motion control configurations use control and status word bits for various modes.

Parameter List

Parameters (Menu “Para”)

Lists all available parameters, their ranges, and related chapters.

APPENDIX

Error messages

Explains error codes, their groups, and meanings for motion control and Ethernet communication.