Pepperl+Fuchs VAG-PB-KF-R4 Manual page 40

Byte 2: Start address of the user memory window in the output data telegram
Byte 3: Length of the user memory window in the output data telegram
If user memory bytes shall only to be read or written, the appurtenant length
byte has to be set to 0.
If no user memory bytes shall be transmitted it is recommended to set the user
memory statement to FF
The maximum length of the user memory window is 128 bytes.
• AS-i configuration data and AS-i (startup) parameters (62 bytes)
For each AS-i slave 2 bytes are used. AS-i slave 0 is disregarded.
In the first byte, the AS-i configuration data is specified. The AS-i ID-code is
coded in the byte's high nibble and the I/O-configuration in its low nibble.
bit 7
In the second byte's low nibble, the AS-i (startup) parameters are transmitted.
The upper half of this byte is unused.
Furthermore during the operation of the system AS-i parameters can be trans-
mitted via Profibus in the management channel as described above (command
write parameter).
bit 7
0
The default parameter for an AS-i slave is F
0Fhex is stated.
If a slave address is to remain unused, either FF
has to be entered.
The configuration of the DP-slave (I/O data fields) has to be adjusted according
to the highest AS-i slave address.
Example: Parameter telegram for the professional mode:
3 AS-i slaves and transmission of user memory, all slaves AS-i ID 0
Slave 1: 4 inputs
Slave 2: 4 outputs
Slave 3: 2 inputs, 2 outputs
from user memory byte 0 read 4 bytes of user memory
no writing of user memory
user mem. st.
20 00 04 00
Subject to reasonable modifications due to technical advances.
40
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(write user memory)
hex
bit 6 bit 5
ID-code
bit 6 bit 5
0 0
unused (=0)
slave 1 slave 2
conf par conf
ID,IO ID,IO
00 00 0F 08
FF FF FF .
hex hex hex
bit 4 bit 3
bit 4 bit 3
0 P3
, so that normally as second byte
hex
hex
slave 3
par conf par conf
ID,IO ID,IO
0F 03 0F FF
AS-Interface
Profibus-DP
bit 2 bit 1 bit 0
IO-configuration
bit 2 bit 1 bit 0
P2 P1
AS-i parameter
, FF or 256 , 256
hex hex
slave 4 slave 31
par conf
ID,IO
FF FF
...
Copyright Pepperl+Fuchs, Printed in Germany
P0
hex
par
FF