Lenze i550 - Page 433

Error codes
In the event of an error, the Modbus node responds with a funcon code associated with the
message:
Funcon code Associated func-
on code in the
event of an
error
Supported error codes
0x03 0x83 0x01, 0x02, 0x03, 0x04
0x06 0x86 0x01, 0x02, 0x03, 0x04
0x10 0x90 0x01, 0x02, 0x03, 0x04
0x17 0x97 0x01, 0x02, 0x03, 0x04
Error code Designaon Cause(s)
0x01 Invalid funcon
code
The funcon code is not supported by the inverter, or the inverter is in a state in which the request is not
permissible or in which it cannot be processed.
0x02 Invalid data
address
The combinaon of a start address and the length of the data to be transmied is invalid.
Example: If you have a slave with 100 registers, the rst register has the address 0 and the last register has the
address 99. If there is a request of four registers now, from the start address 96, the request can be processed
successfully (for registers 96, 97, 98, and 99). If, however, ve registers from the start address 96 are queried,
this error code is returned, since the slave has no register with the address 100.
0x03 Invalid data
value
Error in the reset structure of a complex request, e. g. because the data length that has resulted implicitly is
not correct.
The cause, however, is not that a (parameter) value is wrien outside the valid seng range. As a maer of
principle, the Modbus protocol has no informaon on valid seng ranges of single registers or their meaning.
0x04 Slave device fail-
ure
A non-correctable error has occurred while the request was processed in the inverter.
Data transfer with funcon code 3
Request
Funcon code 0x03
Start address 0x0000 ... 0xFFFF
Number of registers (n) 0x01 ... 0x7D (1 ... 125)
Response
Funcon code 0x03
Number of bytes 2 x (number of registers)
Register value Data in (n) register of 2 bytes each
Error message
Funcon code in the event of an
error
0x83
Error code 01 ... 04
Example for data transfer with funcon code 3
The data from the registers 40108 to 40110 are to be read.
Request Info
Funcon code 0x03 Funcon code 3
Start address (High) 0x00 Start address 107 (0x006B)
Start address (Low) 0x6B
Number of registers (High) 0x00 Number of registers = 3 (0x0003)
Number of registers (Low) 0x03
Response Info
Funcon code 0x03 Funcon code 3
Number of bytes 0x06 6 bytes are read.
Value in registers 40108 (High) 0x02 Data in register 40108: 0x022B (555).
Value in registers 40108 (Low) 0x2B
Value in registers 40109 (High) 0x00 Data in register 40109: 0x0000 (0).
Value in registers 40109 (Low) 0x00
Value in registers 40110 (High) 0x00 Data in register 40110: 0x0064 (100).
Value in registers 40110 (Low) 0x64
Conguring the network
Modbus TCP
Data transfer
433