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Definitions for the DP Master
Introduction
Definitions
CP 5430/31
IM 308-B
Communications Processor CP 541
EWA 4NEB 812 6188-02
For the DP connection between the CP 541 and the DP master, the protocol
specified in Standard DIN E 19245, Part 3, is used.
Given in the following list is a summary of definitions for the CP 541 which
are established for the DP connection.
The CP 541 and connected programmable controller do not require de-
vice-specific parameters.
The structure of the parameter assignment message is given in
Appendix D.
The configuring message does not contain manufacturer-related data.
The structure of the configuring message is given in Appendix E.
You can specify up to 16 words of data per direction.
The data have word format.
Data consistency
You must select word-oriented consistency for the data transmission in the
DP master.
Manufacturer identifier: 001FH
DP watchdog
When configuring the DP master, you ensure that the DP watchdog with
the CP 541 is set in the DP master according to the transmission rate, as
follows:
T'mission rate (in Kbps)
Watchdog (in ms)
With the CP 5430/31, you must select cycle-synchronous exchange of data.
If you use the IM 308-B as the DP master, you must always assign parame-
ters to the CP 541 as the passive station.
93.75
187.5
500
80
70
60
F
1500
50
F-1
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