Table of Contents
Advertisement
Overview
PROFIBUS-DP
Service Access Points
Communication
Start-up
NPBA-12 Installation and Start-up Guide
This chapter describes the PROFIBUS messaging used in the
communication with the drive.
The NPBA-12 module supports the PROFIBUS-DP protocol, including
the DPV1 Extensions to the EN 50170 standard. PROFIBUS-DP is a
distributed I/O system which enables the master to use a large number
of peripheral modules and field devices. The data transfer is mainly
cyclic: the master reads the input information from the slaves and
sends the output information back to the slaves.
The PROFIBUS-DP protocol uses so-called PPOs (Parameter/Process
Data Objects) in cyclic communication. See
PPO types and their composition.
The services of the PROFIBUS Data Link Layer (Layer 2) are used by
PROFIBUS-DP through Service Access Points (SAPs). Precisely
defined functions are assigned to individual SAPs.
For further information on Service Access Points, refer to the manual of
the PROFIBUS master, PROFIDRIVE – The PROFIBUS Profile for
Adjustable Speed Drives, or the EN 50170 standard.
The following Service Access Points (SAPs) are used to initiate DP
communication:
SAP No.
Short Name
61
Set_Prm
62
Chk_Cfg
60
Slave_Diag
128 (Default)
Data_Exch
Chapter 6 – Communication
Send Parameter Data
Check Configuration Data
Read Slave Diagnostic Information
Transfer Input and Output Data
Figure 6-1
for the different
Name
6-1
- Quick Links:
- Profibus-Dp
Hide quick links:
Advertisement
Table of Contents
