Siemens SINAMICS S110 - Structure of Orders and Responses

Communication
9.2 Communication according to PROFIdrive
Function Manual
578 Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Characteristics of the parameter channel
● One 16-bit address each for parameter number and subindex.
● Concurrent access by several PROFIBUS masters (master class 2).
● Transfer of different parameters in one access (multiple parameter request).
● Transfer of complete arrays or part of an array possible.
● Only one parameter request is processed at a time (no pipelining).
● A parameter request/response must fit into a data set (max. 240 bytes).
● The task or response header are user data.
9.2.4.2 Structure of orders and responses
Structure of parameter request and parameter response
Parameter request Offset
Request reference Request ID 0 Job header
Axis No. of parameters 2
Attribute No. of elements 4
Parameter number 6
1. parameter address
Subindex 8
...
Attribute No. of elements
Parameter number
nth parameter address
Subindex
Format No. of values
Values
1. parameter value(s)
...
...
Format No. of values
Values
Values for
write access
only
nth parameter value(s)
...