ICENI/AI-04
10
DATA COMMUNICATIONS TO MASTER MODULE
The ICENI/AI-04 module communicates its signal information to the master module
via a module process image. The master module takes this image and combines it
with those from other Iceni signal conditioning modules to form a process image
representing the whole Iceni node. It is from this image that data will be exchanged
on the field communications network.
The generic Iceni signal conditioning module process image takes the format shown
in the diagram on the left below, where sixteen data slots are filled with up to eight
measured or driven signal values and up to eight signal status values.
MEASURED / DRIVEN
SIGNAL VALUES
CHANNEL 1
MEASURED VALUE
CHANNEL 2
MEASURED VALUE
CHANNEL 3
MEASURED VALUE
CHANNEL 4
MEASURED VALUE
CHANNEL UNAVAILABLE
CHANNEL UNAVAILABLE
CHANNEL UNAVAILABLE
CHANNEL UNAVAILABLE
SIGNAL STATUS
VALUES
CHANNEL 1 STATUS VALUE
CHANNEL 2 STATUS VALUE
CHANNEL 3 STATUS VALUE
CHANNEL 4 STATUS VALUE
CHANNEL UNAVAILABLE
CHANNEL UNAVAILABLE
CHANNEL UNAVAILABLE
CHANNEL UNAVAILABLE
MEASURED / DRIVEN
SIGNAL VALUES
CHANNEL 1
MEASURED / DRIVEN VALUE
(if available)
CHANNEL 2
MEASURED / DRIVEN VALUE
(if available)
CHANNEL 3
MEASURED / DRIVEN VALUE
(if available)
CHANNEL 4
MEASURED / DRIVEN VALUE
(if available)
CHANNEL 5
MEASURED / DRIVEN VALUE
(if available)
CHANNEL 6
MEASURED / DRIVEN VALUE
(if available)
CHANNEL 7
MEASURED / DRIVEN VALUE
(if available)
CHANNEL 8
MEASURED / DRIVEN VALUE
(if available)
SIGNAL STATUS
VALUES
CHANNEL 1 STATUS VALUE
(if available)
CHANNEL 2 STATUS VALUE
(if available)
CHANNEL 3 STATUS VALUE
(if available)
CHANNEL 4 STATUS VALUE
(if available)
CHANNEL 5 STATUS VALUE
(if available)
CHANNEL 6 STATUS VALUE
(if available)
CHANNEL 7 STATUS VALUE
(if available)
CHANNEL 8 STATUS VALUE
(if available)
Generic Iceni Signal Conditioning ICENI/AI-04 Module
Module Process Image Process Image
The diagram (above right) shows the specific format of the module process image for
the ICENI/AI-04 module. As only four signal channels are present, not all data slots
are available.
Pub_3645
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