AS-Interface
Glossary: AS-i Terms
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
106
Detection phase
In the detection phase at start-up the master is scanning for AS-i slaves. It remains
in this phase until at least one slave is detected. If the master remains in the de
-
tection phase this means that no slave was found. The reason for this may be a
wrong power supply or a wiring error.
The detection phase is displayed by code "41".
Protected mode
In protected mode only those slaves are activated which are registered in the
⇒
LPS and whose actual configuration matches with the target configuration.
See ⇒ configuration mode. This mode is intended for the normal operation, since
all AS-i protective measures are activated.
ID code
The ID code is unchangeably set by the manufacturer of the AS-i slave. The AS-i
Association defines the ID codes assigned to a certain category of slaves. All
⇒
A/B slaves e.g. possess the ID code "A".
ID1 code, extended ID1 code
The ID1 code is specified by the manufacturer of the slave. In contrast to the other
codes defining the profile this code can be modified by the master or by an ad
-
dressing unit. The user should make use of this possibility only in exeptional cas-
es, otherwise ⇒ configuration errors may occur.
To make the distinction between the A and the B addresses in the case of A/B
slaves, the bit with the highest value of the ID1 code is used. That is why only the
three lowest bits are relevant for these slaves. Since this code has been intro
-
duced with the new AS-i specification 2.1, it is also called extended ID1 code.
ID2 code, extended ID2 code
The ID2 code is unchangeably set by the manufacturer of the slave. The AS-i As-
sociation defines the ID2 codes assigned to a certain category of slaves. All two-
channel 16-bit input slaves with the profile S-7.3 possess the ID2 code "D". Since
this code has been introduced with the new AS-i specification 2.1, it is also called
extended ID2 code.
Actual configuration
The configuration data of all slaves detected by the master. The configuration data
of one slave, the ⇒ slave profile, consists of:
⇒ IO code, ⇒ ID code, ⇒ extended ID1code 1, ⇒ extended ID2 code.
To Next Page
Loading...
Need help?
General
