HEIDENHAIN PROFIBUS-DP (DPV2) - Manual (Page 9)

General information
9
1.3 PROFIBUS technology
PROFIBUS is a powerful and versatile 2-wire non-proprietary open
field bus standard defined by several international standards such
as EN 50170, IEC 61158 together with different device profiles.
There are 3 different PROFIBUS versions available today, DP, FMS
and PA. HEIDENHAIN products support the Decentralized
Peripherals (DP) version. In addition to manufacturer-specific
functions, the HEIDENHAIN devices described in this manual
supports application class 3 and 4 according to the encoder profile
3.162 v4.1. The encoder device profile describing encoder
functionality and additional information about PROFIBUS can be
ordered from PROFIBUS User Organization, PNO.
PROFIBUS User Organization
Haid-und-Neu Stra
βe 7
D 76131 Karlsruhe
Tel: +49 721 96 58 590
Fax: + 49 721 96 58 589
Web: www.profibus.com
1.3.1 PROFIBUS DP functionality levels
The main functions of the different levels are as follows:
DPV0: Supports the basic functionality for the PROFIBUS
protocol. In principal this means the cyclical I/O communication
and diagnostics. HEIDENHAIN have a separate manual for DPV0
devices.
DPV1: The most important benefits with DPV1 are the expanded
functions for the acyclical data communication and alarm
handling. This is a precondition for parameterization and calibration
of field devices over the bus in runtime.
DPV2: In addition to the functionality above, DPV2 includes
expansions that are required for time critical applications such as
motion control. This means functions such as slave-to-slave
communications and isochronous data exchange (time
synchronization).