SYCON.net PROFIBUS DP Slave DTM

Glossary 123/132
12 Glossary
Data Packets
DPV0
DPV1
DTM
FDT
Freeze
GSD
Data packets, i. e. messages are self-contained blocks of defined data
length. The packets are used to communicate with the firmware and they
are exchanged between the application (configuration software) and the
firmware in the device. Using the configuration software feature Packet
Monitor Packets can be sent once or cyclically to the connected device
controlled by the user and packets received can be displayed.
Data packets comprise from a Packet Header and the Send Data or from
a Packet Header and the Receive Data. The packet header can be
evaluated by the receiver of the packet and contain the sender and receiver
address, the data length, an ID number, status and error messages and the
command or response code. The minimum packet size amounts 40 Byte
for the packet header. The sending and receiving data are added.
PROFIBUS DP with cyclic communication
PROFIBUS DP with acyclic communication
Device Type Manager
The Device Type Manager (DTM) is a software module with graphical user
interface for the configuration and/or for diagnosis of devices.
Field Device Tool
FDT specifies an interface, in order to be able to use DTM (Device Type
Manager) in different applications of different manufacturers.
After receiving the control command FREEZE, the DP-Slave freezes the
actual state of the Inputs and transmits them cyclically to the DP-Master.
After each new control command FREEZE, the Slave freezes the state of
the Inputs again. The actual Input data are not transmitted cyclically from
the DP-Slave to the DP-Master until the DP-Master sends the control
command UNFREEZE. The DP-Slave has to be assigned to a group for the
control command FREEZE in the configuration.
GSD = General Station Description
The 'General Station Description' describe the characteristics of a device
type in a stipulated format. The GSD are created individually for each
device type. And they are allocated in form of a GSD file for the user by the
manufacturer of the device.
The project system can read in and consider the GSD for any PROFIBUS
DP device automatically because of the pegged file format during the
configuration of the bus system.
DTM for Hilscher PROFIBUS DP Slave Device | Configuration of Hilscher Slave Devices
DOC091001OI07EN | Revision 7 | English | 2011-09 | Released | Public © Hilscher, 2009-2011