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If the same command byte shall be sent several times one after the other, the bit 7
7
(valence 2
) has to be toggled each repetition.
The bit 6 (valence 2
address to. If this bit is 0, AS-i Master 1 is addressed, otherwise AS-i Master 2. With
single masters this bit has to be 0, with double masters the AS-i circuit to address can
be selected. (e.g. command read AS-i Control Flags of AS-i circuit 2: 4D
After execution of the command the command byte is mirrored. Illegal commands
(AS-i circuit number 2 with single masters, illegal command byte or a data field which
is too short) always return as mirrored command byte 00
was set.
Commands that may fail return an error code (00
(status).
The possible commands are listed as follows:
AS-i function
Idle
(no function)
write projected
parameter
read projected
parameter
write parameter
read actual
paramter
write (project)
actual parameter
write projected
coniguration
read projected
coniguration
write projected
coniguration
read actual con-
figuation
address AS-i slave
Subject to reasonable modifications due to technical advances.
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
6
) of the command byte states the number of the AS-i Masters to
command
byte
output
00
hex
input
00
hex
output
01
hex
input
01
hex
output
02
hex
input
02
hex
output
03
hex
input
03
hex
output
04
hex
input
04
hex
output
05
hex
input
05
hex
output
06
hex
input
06
hex
output
07
hex
input
07
hex
output
08
hex
input
08
hex
output
09
hex
input
09
hex
output
0A
hex
input
0A
hex
AS-i/PROFIBUS Gateway
hex
: OK, FF
hex
data
data
byte[0]
byte[1]
-
-
slave address
parameter
status
slave address
status
parameter
slave address
parameter
status
parameter
slave address
status
parameter
-
status
slave address
conf.-daten
status
slave address
status
conf.-daten
-
status
slave address
status
conf.-daten
old address
new address
status
Copyright Pepperl+Fuchs, Printed in Germany
Profibus-DP
)
hex
or 80
, if the toggle bit
hex
: error) in data byte[0]
hex
data
data
byte[2]
byte[3]
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
35
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