Application And Brief Description - ABB Protronic 100 Manual

Writing Conventions
In the documentation related to PROFIBUS-DP numbers are
usually written in hexadecimal format. In the following text, all
numbers in hexadecimal format start with "0x". - The number of
digits to the right of this code indicates the number of used bits
(bytes).-
Example:
Decimal Hexadecimal (8-bit)Hexadecimal (16-bit)
37 0x25
180 0xB4
7000 - 0x1B58
0x0025
0x00B4

Application and Brief Description

The PROFIBUS-DP module for controllers improves and speeds
up the data exchange with distributed process stations or operator
and visualization stations.
PROFIBUS-DP is used as the protocol. --
Usually, the data transmission to and from distributed devices is
cyclical. -A central control unit ("master") reads the input
information from the stations on the bus ("slaves") and writes back
the output information to the respective slaves. --
In process automation, also non-cyclic events/operations (e.g.
setpoint or mode changes) occur. - PROFIBUS-DP in its original
form is not designed for handling these actions. This manual,
however, contains a description of how to achieve acyclic
transmission using the PROFIBUS-DP protocol. -
Contrary to former bus technologies, PROFIBUS also protects the
bus system from troubles resulting from stations with invalid
parameters or wrong configuration. It is also possible to disable or
switch off a station without interrupting the high-speed data
transmission. --
The following description provides all information needed for
commissioning controllers as PROFIBUS-DP slaves. --
-- The PROFIBUS variant
Additional Information 3