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Communication
6.3 Acyclic Communication
Control Units CU240S
144 Operating Instructions, 10/2007, A5E00766042B AC
Parameter address
Addressing of a parameter. If several parameters are accessed, there are
correspondingly many parameter addresses. The parameter address appears only in the
request, not in the response.
Parameter value
Per addressed parameter, there is a segment for the parameter values. Depending on
the request ID, parameter values appear only either in the request or in the reply.
Table 6-21 Parameter request
Word
Byte Byte
Request Reference Request ID Request header
Drive object ID No. of Parameters
Attribute No. of elements
Parameter Number (PNU)
1
st
Parameter Address
Subindex
Attribute No. of elements
Parameter Number (PNU)
n
th
Parameter Address
Subindex
Format No. of Values
Values
1
st
Parameter Value(s)
(only for request
"Change parameter")
Format No. of Values
Values
n
th
Parameter Value(s)
Table 6-22 Parameter response
Word
Byte Byte
Request Reference mirrored Response ID Response header
Drive object ID mirrored No. of Parameters
Format No. of Values
Values or Error Values
1
st
Parameter Value(s)
(only after request "Request")
Format No. of Values
Values or Error Values
n
th
Parameter Value(s)
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