Hitachi NES1-002LB, Краткое руководство пользователя

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Chapter 8 Communication Functions
8 - 17
(I) Exception Response
When sending a query (excluding a broadcasting query) to an inverter, the master always requests
a response from the inverter. Usually, the inverter returns a response according to the query.
However, when finding an error in the query, the inverter returns an exception response. The
exception response consists of the fields shown below.
Field Configuration
Slave address
Function code
Exception code
CRC-16
The content of each field is explained below. The function code of the exception response is the
sum of the function code of the query and 80h. The exception code indicates the factor of the
exception response.
Function Code
Query Exception Response
0 1 h 8 1 h
0 3 h 8 3 h
0 5 h 8 5 h
0 6 h 8 6 h
0 F h 8 F h
1 0 h 9 0 h
1 7 h 9 7 h
Exception Code
Code Description
0 1 h The specified function is not supported.
0 2 h The specified function is not found.
0 3 h The format of the specified data is not acceptable.
2 1 h The data to be written in a holding register is outside the inverter.
2 2 h
The specified functions are not available to the inverter.

Function to change the content of a register that cannot be changed while the
inverter is in service

Function to submit an ENTER command during running (UV)

Function to write in a register during tripping (UV)

Function to write in a read-only register (or coil)

to write in a register during softlock

to change the input/output terminal which could not be changed

to change NO->NC of Reset terminal
2 3 h To write a register/coil for READ ONLY