Siemens SIMATIC NET CP 243-2 Manual page 121

5.2.27 Get_LPF
Purpose
With this call, the list of peripheral faults (LPF) signaled by the AS-i slaves is read
out from the AS-i master. The LPF is updated cyclically by the AS-i master.
Whether and when as AS-i slave signals faults of the attached peripherals (for
example wire break) can be found in the description of the AS-i slave..
Structure of the Job Data in the Send Buffer
Bank Byte
2 0
2 1
Structure of the Job Data in the Receive Buffer
Bank Byte
Bit 7
2 0
2 1
2 2 slave 0
2 3 slave 8
2 4 slave 16
2 5 slave 24
2 6 reserv.
2 7 slave 8B slave 9B
2 8 slave
16B
2 9 slave
2B4
The bits in the LPF data have the following meaning:
Bit=0:
Bit=1:
SIMATIC NET CP 243-2 AS-i Master
C79000-G8976-C142/02
Command number 3E
AS-i slave address
Meaning
Bit 6 Bit 5 Bit 4
Echo of the command number 3E
Command status
slave 1 slave 2 slave 3
slave 9 slave 10 slave 11
slave 17 slave 18 slave 19
slave 25 slave 26 slave 27
slave 1B slave 2B slave 3B slave 4B slave 5B slave 6B slave 7B
slave slave
10B 11B
slave slave slave
17B 18B 19B
slave slave slave
25B 26B 27B
Slave signals no peripheral fault
Slave signals peripheral faults
Command Interface
Meaning
H
Bit 3 Bit 2 Bit 1
H
slave 4 slave 5 slave 6
slave 12 slave 13 slave 14
slave 20 slave 21 slave 22
slave 28 slave 29 slave 30
slave slave slave
12B 13B 14B
slave slave slave
20B 21B 22B
slave slave slave
28B 29B 30B
Bit 0
slave 7
slave 15
slave 23
slave 31
slave
15B
slave
23B
slave
31B
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