VACON CX
Profibus user’s manual
Page
13
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Vacon Oyj
Phone +358-201-2121
Fax: +358-201-212 205
ID
ID byte1
ID byte2
15
14
13
12
11
10
9 8 7 6 5 4 3 2 1 0
Request/Response type
SM
Parameter Number
SM:
Spontaneous bit (not used)
Request/Response types
Request Function
Response Function
0
No request
0
No response
1
Read parameter value (word)
1
Parameter value ready (word)
2
Write parameter value (word)
7
Request rejected (+fault code)
Fault Number (if response = 7)
Fault Number
Description
0 Illegal
Parameter
1
Parameter is read only ( e.g. actual values)
2
Parameter value is out of limits
17
Request temporarily rejected (e.g. can be changed only for STOP state)
18 Other
fault
101
Unknown request type
Example1
, (PPO1 mode):
Read parameter number 102 (Par 1.2).
Start frequency converter and set speed reference 50,00%.
Command Master - Slave:
ID
1066 hex
1 - Read parameter value
066 - Parameter 102 (= Maximum frequency )
IND
0000 hex
0000 - No meaning
VALUE
0000 0000 hex
0000 0000 - No meaning
CW
047F hex
04 7F- Start command (see chapter control word and state machine)
REF
1388 hex
Speed ref. 50,00% (= 25,00 Hz if parameter min. frequency 0 Hz and
max. frequency 50 Hz)
PPO1 frame:
10 66 00 00 00 00 00 00 04 7F 13 88
