Lenze 2130IB - Manual (Page 69)

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4.5. Process data configuration
The process data configuration is used to combine different parameters
to form a new parameter, in order to transmit this parameter as fast and
cyclically as possible. This is the case, for example, for the parameters
"speed set-value" (index = 6042) and "control word" (index = 6040
hex
),
which are combined to form process output data (output data of the
master).
The configuration is done using the parameter "process input data
description" (index = 6000
hex
) and "process output data description
(index = 6001
hex
). The data structure (process data description structure;
index = 20
hex
) of these parameters is shown in the following.
Process data description structure
Sub-
index Data
type Meaning
(general)
(Byte PCD) (Word PCD) (Double word
PCD)
1 U8 process data length
value fixed to 4
2 U16 index for 1st PCD byte 1st PCDword 1st PCD Dword
3 U8 subindex for 1st PCD byte 1st PCD word 1st PCD Dword
4 U16 index for 2nd PCD byte 0 = not used 0 = not used
5 U8 subindex for 2nd PCD byte 0 = not used 0 = not used
6 U16 index for 3rd PCD byte 2nd PCD word 0 = not used
7 U8 subindex for 3rd PCD byte 2nd PCD word 0 = not used
8 U16 index for 4th PCD byte 0 = not used 0 = not used
9 U8 subindex for 4th PCD byte 0 = not used 0 = not used
The table describes the data structure of the parameter and the meaning
of the entries for byte, word, or double word parameters. In the first
subindex, the length of the process data is entered. The next part is a
description of the parameter which is assigned to each byte of the
process data. The description is the address of the parameter, which
consists of index and subindex.