Profibus IQ plus 800, Installation And Programming Manual

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Profibus Commands 11
3.2 Floating Point (32-bit) Commands
Tables 3-4 and 3-5 show the data formats used to send and receive 32-bit ßoating point commands. Bit
assignments are as follows:
R Reserved
s00-s08 Status data
n00-n07 Channel number or setpoint number
c cccc cccc Command number
v00–v31 32-bit floating point value
See Table 3-6 on page 12 for a list of supported commands; see Section 3.3 on page 12 for status bit assignments.
NOTE:
Floating point commands support decimal point information with no special handling.
Bit
Byte 1 Byte 0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Word 0 R R R R R R R c c c c c c c c c
Word 1 R R R R R R R R n07 n06 n05 n04 n03 n02 n01 n00
Word 2 v31 v30 v29 v28 v27 v26 v25 v24 v03 v22 v21 v20 v19 v18 v17 v16
Word 3 v15 v14 v13 v12 v11 v10 v09 v08 v07 v06 v05 v04 v03 v02 v01 v00
Table 3-4. ProÞbus 32-bit Floating Point Output Format
Bit
Byte 1 Byte 0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Word 0 R R R R R R R c c c c c c c c c
Word 1 s15 s14 s13 s12 s11 s10 s09 s08 s07 s06 s05 s04 s03 s02 s01 s00
Word 2 v31 v30 v29 v28 v27 v26 v25 v24 v03 v22 v21 v20 v19 v18 v17 v16
Word 3 v15 v14 v13 v12 v11 v10 v09 v08 v07 v06 v05 v04 v03 v02 v01 v00
Table 3-5. ProÞbus 32-bit Floating Point Input Format
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