Technical data

Manual – MOVI-PLC® advanced DH.41B Controller

Structure of the DP-V1 parameter channel

PROFIBUS-DP-V1 Functions

Parameter set-

ting procedure

via dataset 47

Parameter access takes place with the combination of the DP-V1 services write and

read. The master transfers the parameter setting job to the slave by sending Write.req.

followed by slave-internal processing.

The master now sends a Read.req to request the parameter setting response. The

master repeats the Read.req if the Read.res from the slave is negative. As soon as

parameter processing in the MOVI-PLC

advanced DHF41B control card (slave) is

completed, the control card answers with a positive response Read.res. The user data

now contains the parameter setting response of the parameter setting request that was

previously sent with Write.req (→ following figure). This telegram sequence applies to

both a C1 and a C2 master.

61587AXX

Write.req DS47Parameter

Parameter

Read.req DS47

Write.res

Read.res(-)

Read.res(+)

with data (parameter request)Request

Response

Request

Processing

without data

with data (parameter response)

Master PROFIBUS-DP-V1 Slave (DHF41B)