Function Code 8, Diagnosis - BONFIGLIOLI Active cube Operation 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
0x0A Delete all counters
0x0B Return number of bus messages
0x0C Return number of bus transfer errors
0x0D Return number of bus exceptions
0x0E Return number of slave messages
0x0F Return number of "Slave – no response"
messages
0x10 Return number of slave NAK (negative
receipt acknowledgment)
0x11 Return number of "Slave busy" messag-
es
0x12 Return number of bus character data
loss error
Request (sub-function 0x0A, Delete all counters):
MBAP Header
Address
Function code
Sub-function
Data
Response:
MBAP Header
Address
Function code
Sub-function
Data
Exception condition response:
MBAP Header
Address
Error code
Exception condition code
Data
This field will always be 0x0000.
36
Name
1 byte 1 – 0xF7 (=247)
1 byte 0x08
2 bytes 0x000A
2 bytes 0x0000
1 byte 1 – 0xF7 (=247)
1 byte 0x08
2 bytes 0x000A
2 bytes 0x0000
1 byte 1 – 0xF7 (=247)
1 byte 0x88
1 byte 1, 3 or 4
ACU
Modbus/TCP
Description
Resets all counters to 0
Number of valid messages received
(including all addresses)
Number of messages with CRC or pari-
ty/block check/data loss errors
Number of exception responses sent
Number of messages received (including
slave address)
Number of broadcast messages received
Not used, return value will always be 0
Not used, return value will always be 0
Number of messages with data loss
errors
10/13