Festo CESA-GW-AS-PB, Installation And Operation Owner'S Manual

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CESA-GW-AS-PB Description
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I/O code
The first digit of the slave profile, which indicates how many in- and outputs the
slave has. A 4I/4O slave has for example a “7”, and a slave with 4 digital inputs a
"0".
Detection phase
In the detection phase, after the startup the master is scanning for AS-i slaves.
The master remains in this phase until at least one slave was detected. If the
master remains in the detection phase no slave was found. Most of the time, the
reason for this is a wrong power supply or a wiring error.
The detection phase is indicated by code "41".
Protected mode
In protected operating mode only those slaves that are registered in the
⇒
LPS
and whose current configuration matches the target configuration are activated.
Also see
⇒
configuration mode. This mode is intended for normal operation,
since all AS-i protective measures are activated.
ID code
The ID code is set by the slave manufacturer and cannot be changed. The AS-i
Association determines the ID codes which are assigned for a particular class of
slaves. For example, all
⇒
A/B slaves have ID code “A“.
ID1 Code, extended ID1 code
The ID1 code is set by the slave manufacturer. In contrast to the other codes,
which determine the profile, it can be changed from the master or using an ad-
dressing device. The user should however only use this feature in exceptional cir-
cumstances, since otherwise
configuration errors may occur.
In the case of A/B slaves, the MSB of the ID1 code is used for distinguishing be-
tween the A and the B address. Therefore, only the lowest 3 bits are relevant for
these slaves.
Since this code was not introduced until AS-i Specification 2.1, it is also referred
to as extended ID1 code.