AS-Interface
PROFIBUS DP
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group · Tel.: Germany (6 21) 7 76-0 · USA (3 30) 4 25 35 55 · Singapore 7 79 90 91 · Internet http://www.pepperl-fuchs.com
Issue date - 21.12.2005
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7 PROFIBUS DP
This chapter contains all necessary information to operate the AS-i/PROFIBUS
gateways in a PROFIBUS DP network.
7.1 DP Telegrams
7.1.1 Diagnosis
ec-flags (high):
Bit 0: periphery fault
Bit 1 … Bit 2 reserved
Bit 3: failure redundant 24 V
Bit 4: earth fault
Bit 5: over voltage
Bit 6: noise
Bit 7: duplicate address
The respective bits ground fault, overvoltage, noise, double address will
only be set if AS-i masters are used, which also support these functions.
DP Diagnosis - Single Master
PDU byte user byte DP DP V1 user
1 – station_status 1 4
2 – station_status 2 4
3 – station_status 3 4
4 – master address 4
5 – ident high 4
6 – ident low 4
7 1 header 4 4
8 2 type 4
9 3 slot 4
10 4 spec 4
11 5 ec-flags (high) 4
12 6 ec-flags (low) 4
13 7 delta (0…7) 4
14 8 delta (8…15) 4
… … … …
20 14 delta (56…63) 4
21 15 LPF (0…7) 4
… … … …
28 22 LPF (56 … 63) 4
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