HD45 / HD46
- 53 -
V2.4
Parameter storage
(function
05h
)
Function code 05h allows the permanent storage of any changes made to parameter
values.
Parameter changes performed with Write functions (functions 06h
and 10h) actually modify only values in the RAM memory and are therefore
deleted in case of instrument power supply failure.
Storage is associated with a number, as described in Table 8.E.
Tab. 8.E: Storage command
Command
number
Command
From
FW
Ver.
Notes
0003
Parameter permanent storage
1.07
The command address, followed by the fixed value FF00h is indicated in the request
data field.
Since, in the protocol, registers are numbered starting from 1, but data are addressed
starting from 0, a register address is equal to the register number decremented by 1.
The response format of the instrument is equal to the request format. Therefore,
command and response
Function
and
Data
fields have the following format:
Command
Value
Length
Description
Function
:
05h
1 byte
Commands execution
Data
:
0002h
2 bytes
Command address (= number - 1)
FF00h
2 bytes
Fixed value
Response
Value
Length
Description
Function
:
05h
1 byte
Commands execution
Data
:
0002h
2 bytes
Command address (= number - 1)
FF00h
2 bytes
Fixed value
Only parameters changed within command transmission are permanently stored, any
changes made afterwards require a new transmission of the command in order to
make them become permanent.
The execution request of a command that is not present in table 8.E generates an
error response from the instrument.
Changing a single configuration parameter
(function
06h
)
Function code 06h allows to change a single parameter value in the instrument.
The configuration register address containing the parameter to be changed and the
new parameter value are indicated in the request data field.
Since, in the protocol, registers are numbered starting from 1, but data are addressed
starting from 0, a register address is equal to the register number decremented by 1.
The response format of the instrument is equal to the request format. Therefore,
command and response
Function
and
Data
fields have the following format:
Содержание HD45 17A
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