Profibus Diagnosis Telegram - Pepperl+Fuchs VAG-PB-KF-R4 Manual

(all data stated in hexadecimal code)
Profibus Configuration of the Profibus-DP slave
The Profibus configuration of the AS-i/PROFIBUS Gateways built up out of the follow-
ing Profibus slots:
process data/AS-i flags of AS-i Master 1
standard identification byte (1..16 bytes) or empty slot
management channel
standard identification byte 0xB2 (3 bytes) or 0xB4 (5 bytes) or empty slot
user memory (AS-i Control)
standard identification byte or extended identification byte (altogether up
to 128 bytes) or empty slot
Empty slots at the end of the configuration telegram can be left out.
In contrast to the easy mode, the size of the I/O window can be matched to the exten-
sion of the AS-i network. Its size in bytes amounts:
Any non-integer value has to be rounded up to a full byte.
If the requested data field length for the user memory is smaller than the calculated
length from the parameter telegram, the gateway will not take up any communication
relationship with the DP-master.
The maximum data field length for input respectively output data is 149 bytes with a
device with one AS-i Master.
8.4

Profibus Diagnosis telegram

Besides the on-the-spot-diagnosis via the figure display and the seven LEDs, there is
also the possibility of a diagnosis via the Profibus-DP. The Profibus diagnosis tele-
gram meets the Profibus norm.
The Profibus diagnosis telegram depends on the operation mode.
8.4.1 Diagnosis telegram in easy mode and advanced mode
The diagnosis telegram contains 9 bytes in the easy mode or the advanced mode.
The structure is represented in the following table.
byte
0
1
2
3
4-5
6
7
8
Subject to reasonable modifications due to technical advances.
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(highest AS-i slave address + 1) / 2
content
station status 1
station status 1
station status 1
station number DP-master
manufacturer code
header and length of the device-based diagnosis
AS-i slave address
type of configuration error
AS-i/PROFIBUS Gateway
Profibus-DP
Copyright Pepperl+Fuchs, Printed in Germany
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