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G7 ASD Multi-Protocol Communication Option and PG Feedback Option Manual
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9.4 Profibus Exchanged Data Structures
9.4.1 Output (Control) Data Format
The size of the output data structure from the network master to the Multicom interface is modular and
selectable from 4 to 40 bytes. The allocation of the maximum 40 bytes of the data structure is
comprised of 1 fixed four-byte command, 1 fixed four-byte extended command, 1 fixed four-byte speed
reference, 5 configurable four-byte scan data selections (selectable via drive parameters F831-F835),
and 1 eight-byte structure for asynchronous parameter accesses. Refer to Table 9 for details.
Table 9: Output (Control) data
Offset Data
Offset Data
0 Reserved 20 Parameter F833 setting high byte
1 Reserved 21 :
2 Command high byte 22 :
3 Command low byte 23 Parameter F833 setting low byte
4 Reserved 24 Parameter F834 setting high byte
5 Reserved 25 :
6 Extended command high byte 26 :
7 Extended command low byte 27 Parameter F834 setting low byte
8 Speed reference high byte 28 Parameter F835 setting high byte
9 : 29 :
10 : 30 :
11 Speed reference low byte 31 Parameter F835 setting low byte
12 Parameter F831 setting high byte 32 Action bits / Reserved
13 : 33 Reserved
14 : 34 Parameter number high byte
15 Parameter F831 setting low byte 35 Parameter number low byte
16 Parameter F832 setting high byte 36 Reserved
17 : 37 Reserved
18 : 38 Parameter data to write high byte
19 Parameter F832 setting low byte 39 Parameter data to write low byte
Locations marked “Reserved” in the above table are reserved for future use. Presently, all “Reserved”
output data locations are ignored by the drive. Future releases of the drive firmware, however, may use
these locations for data transfer.
Throughout the remainder of this section, references may be made to internal ASD parameter numbers
and data definitions. For more information regarding the specific accessible ASD parameters, please
refer to the appropriate ASD Serial Communication Interface Manual (obtainable from Toshiba).