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Parameter data transfer

PROFIdrive parameter data channel

PROFIdrive DP−V1

EDSMF2133IB EN 5.0

8.3.1 PROFIdrive DP−V1

Features

ƒ Parameter number and subindex addresses with a width of 16 bits each.

ƒ Several parameter requests can be combined to one request (multi−parameter

requests).

ƒ Processing of one parameter request at a time (no pipelining).

ƒ A parameter request or a parameter response must fit into one data block (max. 240

bytes). Requests/responses cannot be split over several data blocks.

ƒ Spontaneous messages are not transmitted.

ƒ There are only acyclic parameter requests.

ƒ Profile−specific parameters can be read independently of the slave state.

8.3.1.1 Establishing a connection between master and slave

A class 1 master can always be used to request parameters from a slave if the slave is in the

"Data_Exchange" state.

In addition to the class 1 master connection, a class 2 master can establish a

communication connection to the slave:

DP−V1 parameter data

channel

read

write

Master

class 1

Slave

Master

class 2

Fig. 8−1 Data communication via the DP−V1 parameter data channel

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Lenze EMF2133IB Bedienungsanleitung Seite 97