BONFIGLIOLI Active Cube User Manual

7.2.7 Function code 8, diagnosis
This function code is used for accessing the Modbus diagnosis counter of the frequency inverter. Each
counter can be accessed via a sub-function code and a counter number. Each counter can be deleted
by entering the hexadecimal sub-function code 0x0A.
The following sub-function codes are supported.
Sub-function
Name
Description
0x0A
Delete all counters
Resets all counters to 0
0x0B
Return number of bus messages
Number of valid messages received
(including all addresses)
0x0C
Return number of bus transfer errors
Number of messages with CRC or pari-
ty/block check/data loss errors
0x0D
Return number of bus exceptions
Number of exception responses sent
0x0E
Return number of slave messages
Number of messages received (including
slave address)
0x0F
Return number of “Slave – no response”
messages
Number of broadcast messages received
0x10
Return number of slave NAK (negative
receipt acknowledgment)
Not used, return value will always be 0
0x11
Return number of “Slave busy” messag-
es
Not used, return value will always be 0
0x12
Return number of bus character data
loss error
Number of messages with data loss
errors
Request (sub-function 0x0A, Delete all counters):
MBAP Header
Address
1 byte
1 – 0xF7 (=247)
Function code
1 byte
0x08
Sub-function
2 bytes
0x000A
Data
2 bytes
0x0000
Response:
MBAP Header
Address
1 byte
1 – 0xF7 (=247)
Function code
1 byte
0x08
Sub-function
2 bytes
0x000A
Data
2 bytes
0x0000
Exception condition response:
MBAP Header
Address
1 byte
1 – 0xF7 (=247)
Error code
1 byte
0x88
Exception condition code
1 byte
1, 3 or 4
Data
This field will always be 0x0000.
36
ACU Modbus/TCP 10/13

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.