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DP-V1 communication
Overview
This chapter describes the PROFIBUS messaging used in the
communication with the drive when the RPBA-01 module is in DP-
V1 mode.
PROFIBUS DP
The RPBA-01 module supports the PROFIBUS-DP protocol
according to EN 50170 standard. PROFIBUS DP is a distributed
I/O system which enables the master to use a large number of
peripheral modules and field devices. The data transfer is mainly
cyclic: the master reads the input information from the slaves and
sends the output information back to the slaves.
The PROFIBUS DP protocol uses so-called PPOs
(Parameter/Process Data Objects) in cyclic communication. See
Figure 10
Service Access Points
The services of the PROFIBUS Data Link Layer (Layer 2) are
used by PROFIBUS DP through Service Access Points (SAPs).
Precisely defined functions are assigned to individual SAPs.
For further information on Service Access Points, refer to the
manual of the PROFIBUS master, PROFIdrive – The PROFIBUS
Profile for Adjustable Speed Drives (version 3.1), or the EN 50170
standard.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
for the different PPO types and their composition.
DP-V1 communication
63
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