Siemens SIMOVERT MASTERDRIVES Manual page 310

05.2006
Parameter index
(IND) 2nd word
Structure of IND
with cyclical
communication by
means of PPOs
Structure of IND
with acyclical
communication via
MSAC_C1
The function of the
IND
Siemens AG 6SE7087-6QX70 (Version AG)
SIMOVERT MASTERDRIVES
The assignment of the index (IND) is to be regarded as a special feature
or difference between what is specified in the PPOs and what is specified
for the acyclical channels MSAC_C1 and MSAC_C2.
The array sub-index (also designated in shorter form as the sub-index in
the PROFIBUS profile) is an 8-bit value and, during cyclical data transfer,
is transferred in the most significant byte (bits 8 to 15) of the parameter
index (IND). The least significant byte (bits 0 to 7) is not defined in the
profile DVA. In the PPO of the CBP, the least significant byte of the
parameter index is used in order to be able to address additional
technology parameters or parameters of free components in the
MASTERDRIVES by means of parameter page selection.
PKE
HIGH
Array subindex
15
Subindex 1- 255
The array subindex is an 8-bit value and, with acyclical data transfer
(MSAC_C1), is always transferred in the least significant byte (bits 0 to 7)
of the parameter index (IND). The function of parameter-page selection
for additional technology parameters or parameters of free components
in the MASTERDRIVES is assumed here by the most significant byte
(bits 8 to 15) of the parameter index. This structure corresponds to the
stipulations of the USS specification.
PKE
HIGH
MASTERDRIVES – specific
15
Bit 15 = PARA PAGE SEL
For an indexed parameter, if the subindex in a task is transferred with the
values between 1 and 254, the required index of the parameter is
transferred. The significance of the individual indices of the parameter
can be found in the "Parameter List" of the operating instructions for the
converter.
When a description element is being processed, the number of the
required element is transferred. The significance of the description
elements is given in the PROFIBUS profile "Variable-speed drives",
PROFIdrive version V2 (PNO: Order No. 3071).
The value 255 for the array subindex is of special importance. If the array
subindex is transferred with 255, all indices of an indexed parameter are
transferred simultaneously in one data block.
Compendium Motion Control
IND PWE1
LOW
MASTERDRIVES – specific
8 7
Bit 7=PARA PAGE SEL
IND PWE1
LOW
Array subindex
8 7
Subindex 1- 255
Communication / PROFIBUS
PWE2
0
PWE2
0
8.2-23