Siemens COMBIMASTER 411 Operating Instructions Manual page 27

Issue 03/02
Parameter index (IND) 2
Important NOTE
Assignments of index (IND) differ in the PPOs and on the acyclical channel
(data block 100):
Structure of IND for cyclical communication via PPOs
PKE
Array subindex
15
Subindex 0- 255
The array subindex (referred to simply as "subindex" in the PROFIDrive Profile) is
an 8-bit value which is transferred in the high-order byte (bits 8 to 15) of the
parameter index (IND) when data are transferred cyclically via PPOs. The low-
order byte (bits 0 to 7) is not defined in PROFIDrive Profile version 2.0. The low-
order byte of the parameter index is used on MICROMASTER 4 to be able to
address additional parameters with a number of >1999.
Structure of IND for acyclical communication
PKE
MICROMASTER 4-
15
Bit 15 = PARA PAGE SEL
The array subindex is an 8-bit value which is always transferred in the low-order
byte (bits 0 to 7) of the parameter index (IND) in acyclical data exchange mode.
The Parameter Page Selection task for additional parameters is performed in this
case by the high-order byte (bits 8 to 15) of the parameter index. This structure
conforms to the USS specification.
PROFIBUS Communication Module
6SE6400-5AV00-0BP0
nd
word
IND
HIGH LOW
MICROMASTER 4-specific
8 7
Bit 7=PARA PAGE SEL
IND
HIGH LOW
specific
8 7
Operating instructions
PWE1
PWE1
Array subindex
0
Subindex 0- 255
COMMUNICATION
PWE2
0
PWE2
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