Danfoss FC 300 Profibus Manual page 47

FC 300 Profibus
Request / Response Attributes
The table contains an overview of the possible attributes of the PROFIdrive parameter channel.
Field Data type
Request reference Unsigned8
Request ID Unsigned8
Response ID Unsigned8
Axis Unsigned8
Number of Unsigned8
parameters
Attribute Unsigned8
Number of Unsigned8
elements
Parameter number Unsigned16
Subindex Unsigned16
Format Unsigned8
Number of values Unsigned8
Error number Unsigned16
Request Reference
Unique identification of request/response pair for the master. The master changes the request reference with
each new request. The slave mirrors the request reference in the response.
Request ID
The following request identifications are defined:
0x01 Request parameter
0x02 Change parameter (Data are NOT stored in non-volatile memory, lost at power
cycle)
0x42 Change parameter non-volatile (Data are stored in non-volatile memory)
0x51 Request parameter value double word. (All parameters are formatted and
transferred as Double Word size, regardless of the actual data type)
0x52 Change parameter value double word. (All parameters must be formatted and sent
as Double Word size, regardless of data type)
Response ID
The Response ID indicates if the Read or Write request was successfully performed in the FC 300. If the
response is negative, the request is answered negative (first bit = 1) and an error code is entered per
partial response, instead of the value.
How to Access FC 300 Parameters
Values
0x01..0xFF
0x01 request parameter value
0x02 change parameter value
0x42 change parameter non-volatile
0x51 request par. value double word
0x52 change par. value double word
0x01 request parameter (+)
0x02 change parameter (+)
0x81 request parameter (-)
0x82 change parameter (-)
0x00..0xFF number (always 0)
0x01..0x25
0x10 value
0x20 description
0x30 text
0x01-0xFA Quantity 1-234
0x0001... number 1-65535
0xFFFF
0x0000 number 0-65535
0xFFFF
0x01..0x36 Data types
0x40 Null
0x41 Byte
0x42 Word
0x43 Double word
0x44 Error
0x01..0xEA Quantity 0-234
0x0000... Error number
MG.33.C2.02 - VLT is a registered Danfoss trademark
Remark
Identification for read or write
request
Identification for the response
Limitation: DP V1 telegram
length
Limitation: DP V1 telegram
length
Limitation: DP V1 telegram
length
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