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50
Self supervision (INT)
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The self-supervision status can be monitored from the local HMI or via the PST Param-
eter Setting Tool or a SMS/SCS system.
Under the Terminal Report menu in the local HMI the present information from the
self-supervision function can be viewed. A detailed list of supervision signals that can
be generated and displayed in the local HMI is found in the Installation and Commis-
sioning Manual.
In the PST under Terminal Report these summary signals are available:
•
InternalStatus
•
CPU-Status
When an internal fault has occurred, extensive information about the fault from the list
of internal events can be retrieved from the PST under the menu Terminal Report - In-
ternal Events.
A self-supervision summary can be obtained by means of the potential free alarm con-
tact located on the power supply module. The function of this output relay is an OR-
function between the INT--FAIL signal (figure 27) and a couple of more severe faults
that can happen in the terminal (figure 26).
Some signals are available from the function block InternSignals (INT), see figure 25.
The signals from this function block can be connected to an Event function block,
which generates and sends these signals as events to the station level of the control sys-
tem. The signals from the INT-function block can also be connected to binary outputs
for signalization via output relays or they can be used as conditions for other functions
if required/desired.
INT--
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FAIL
WARNING
CPUFAIL
CPUWARN
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Individual error signals from I/O modules and time synchronization can be obtained
from respective function block of IOM-, BIM-, BOM-, MIM-, IOPSM-modules and
from the time synchronization block TIME.
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