PROFIBUS DP provides two ways to accomplish the task:
DTM/FDT and EDD. See "Slave parametrization" and
"Communication parameter".
Device Profile
See "Profile".
DP Master
IEC 61158-5: Within PROFIBUS DP a fieldbus node that can be
either Master Class 1 or Master Class 2. A Master Class 1 is a
controlling device which controls several DP Slaves (field
devices). NOTE: This is usually hosted by a programmable
controller or a process controller.
A Master Class 2 is a controlling device which manages
configuration data (parameter sets) and diagnosis data of a DP
Master Class 1, and that additionally can perform all
communication capabilities of a DP Master Class 1.
DP Master Class1 (DPM1)
IEC 61158-5: A controlling device which controls several DP-
Slaves (field devices). Usually programmable (logic) controllers
or process control systems are hosts for Master Class 1.
DP Master Class2 (DPM2)
IEC 61158-5: A controlling device which manages
configuration data (parameter sets) and diagnosis data of a
DP-Master (Class 1). Additionally the DP-Master (Class 2) can
perform all communication capabilities of a DP-Master (Class
1). Usually personal computers are hosts for DP Master Class 2
for programming, parametrizing, diagnosing and monitoring
purposes.
DP Slave
IEC 61158-5: A field device that is assigned to one DP Master
Class 1 as a provider for cyclic I/O data exchange. In addition
acyclic functions and alarms could be supported.
Event
Within PROFIBUS DP/PA this is a signal or I/O data or process
value within a certain field device at that point in time where
a trigger condition arises. The values are associated with a
time stamp and stored in a buffer. The time-stamped sample
values are used to archive and visualize significant changes
over the course of the production process. Such an event
mechanism does not prevent from the cyclic transmission of
these signals. A separate event alarm is requesting the transfer
of the events to the main system.
Frame
A single set of data transmission from a device.
General Station
Description (GSD)
A GSD is an electronically readable ASCII text file and contains
both general and device-specific parameters for
communication and network configuration. By means of
keywords, a configuration tool allows to:
•
read device information (manufacturer, type, versions,
bitmaps, etc.);
•
read texts for comfortable and easy to use
configuration;
•
select transmission rates;
•
select modules and their I/O data length
(configuration identifier);
