Slaves.
Options (e.g.):
•
Data exchange broadcast (DXB), i.e. Slave to Slaves
communication;
•
isochronous mode of Slaves;
•
clock synchronization;
•
redundancy.
PROFIBUS DP is standardized within IEC 61158 and IEC 61784,
communication profile families 3/1 and 3/2. The term
"PROFIBUS DP" is also a synonym for the RS-485 based
deployments within factory automation.
PROFIdrive
Communication technology especially adopted to the
requirements of position and speed controlled drive
applications (e.g. speed synchronized axis). Within the scope of
PROFIBUS, "PROFIdrive" is used for the application of the
PROFIBUS DP protocol (DP-V2) in motion control automation
together with the corresponding application profiles
("PROFIdrive - Profile for variable speed drives" and
"PROFIdrive - Profile drive technology") for the transmission
technology RS-485.
Profile
Besides other things profiles in common define agreements on
how to use communication means in a standardized manner.
Within the context of fieldbusses several types of profiles are
known:
•
communication profiles (e.g. IEC 61784);
•
physical profiles (MBP-IS, RS-485);
•
application profiles (see PROFIBUS TC3);
•
device profiles (e.g. robots);
•
branch profiles (e.g. extruder).
Profile Ident Number
Identifier of a particular profile definition. The profile ident
number is taken from the pool of ident numbers handled by
the PNO. It plays a role within the following scenarios.
(1) In cases where the device of a manufacturer A should be
replaceable by an equivalent device, the PNO is assigning
number ranges to dedicated device types (Profile specific IDs)
in combination with certain "Profile GSDs". Profiles using this
methodology are e.g. "PA Devices" and "PROFIdrive".
(2) Usually these Slave devices are designed to communicate
with a Master Class 2 application (e.g. profile application or
profile DTM). In order to ensure a Master application is
communicating with an appropriate Slave, it is sending a
profile specific ID during the establishment of the connection
(MS2 Initiate Service). The Slave may answer with the same
profile specific ID (if it is supporting this profile), with another
ID (if it is supporting another profile) or with "0000h" if it is
not supporting any profile.
(3) I&M functions: Besides its basic I&M information devices -
following a certain profile - are enabled to provide more
detailed profile specific information.
