Lenze 2141, Operating Instructions Manual, Page: 25 / 90

Parameter setting
6-3
L
BA2141 EN 1.0
6.1.2 Network variable for the parameter data channel
The network variables
nviParamReq, nvoParamRes
and
nvoLongRes
•
enable parameter setting and diagnostics.
•
allow access to all Lenze parameters (codes).
The input network variable
nviParamReq
allows to send a read or write request to the drive.
With parameters with a length of up to 4 bytes, the response is output through the output network
variable
nvoParamRes
.
With parameters bigger than 4 bytes, the response to a read request is output through the network
variable
nvoLongRes
.
6.1.2.1 Structure of network variables
Tip!
User data are displayed in left-justified Motorola format.
High byte or high word are shown before low byte or low word (see
Calculation examples
(
^
6-6)
).
The structure of
nviParamReq
and
nvoParamRes
is defined as follows:
1st byte 2nd byte 3rd byte 4th byte 5th byte 6th byte 7th byte 8th byte 9th byte
Length
code code
Subcode Service
Data 4 Data 3 Data2 Data1
Length
code
High byte
code
Low byte
Subcode Service
Error code
The structure of
nvoLongRes
is defined as follows:
1st byte 2nd byte 3rd byte 4th byte 5th byte 6th byte .... 28th byte
Length
code
High byte
code
Low byte
Subcode Service Data 1 .... Data23
Details about the
parameter data
1st byte
parameter data
telegram:
Length
Indicates the length of the following byte for write orders. Value range: 1, 2 or 4.
Details about the
2nd byte 3rd byte
Details about the
parameter data
telegram:
code
High byte
code
Low byte
Byte 2 and byte 3 contain the code to be used.
Details about the
parameter data
4th byte
parameter data
telegram:
Subcode
Byte 4 contains the subcode to be used.
•
The series 82XX do not have codes with subindex, the value is always 0.
•
Many codes of 93XX and 8200 vector controllers require additional addressing via a
subindex.
Example for 9300 servo inverters:
Code C0039 / subcode 3 addresses ” NSET JOG” (50% = default setting)
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