Danfoss FC 300 Profibus User Manual

FC 300 Profibus
How to Access FC 300 Parameters
 Request / Response Handling
The RC portion of the PCA word defines the requests that may be issued from the master to the slave as
well as what other portions of the PCV (IND and PVA) are involved. The PVA portion will transmit word-size
parameter values in bytes 7 and 8, while long word size values require bytes 5 to 8 (32 bits). If the Response
/ Request contains array elements, the IND will carry the Array Sub-index. If parameter descriptions are
involved, the IND will hold the Record Sub-index of the parameter description.
 RC Content
Request Function
0 No request
1 Request parameter value
2 Change parameter value (word)
3 Change p arameter value (long word)
4 Request description element
5 Change description element
6 Request parameter value (array)
7 Request pa rameter value (array word)
8 Request p arameter value (array long
word)
9 Request n um ber of array elements
10-15 No t u sed
If the slave rejects a request from the master,
the RC word in the PPO-read will indicate this by
assuming the value 7. The fault number will be
carried by bytes 7 and 8 in the PVA element.
Re-
sponse
Function
0 No response
1 Transfer parameter value (word)
2 Transfer parameter value (long wo rd)
3 Transfer description element
4 Transfer parameter value (array wo rd)
5 Transfer parameter value (array long
word)
6 Transfer number o f array elements
7 Request rejected (incl. fault #, see
below)
8 No t serviceable by PCV interface
9 No t used
10 Not used
11 Not used
12 Not used
13-15 Not used
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Danfoss FC 300 Profibus Specifications

General

Brand	Danfoss
Model	FC 300 Profibus
Category	DC Drives
Language	English