Micromod MOD: 30MLTraining Manual - Manual (Page 63)

Training Manual
MOD 30ML Diagnostics Lab
7 Press the NXT key to view Pages1, 2,
3 and 4 and record the information
Shutdown page 2 displays the time and date of the
shutdown.
8 Press NXT to go to Page 5 Page 5 displays ACK SD and NO on lines 2 and 6
respectively. See the next figure:
Figure 4 .11.
8 Press the UP/DOWN arrow to show
YES
on line 6 and then press the key
next to ENT on the display
This will acknowledge the Shutdown and line 6 will
display NO again. Line 3 will now change to display
RUN
. This means that the instrument state is back to
RUN.

The database we used for forcing the instrument to shutdown has a configuration error
in the display script for the PID. If you press the SCROLL key to switch between
setpoint and output for line 6 will force the instrument to shutdown again.
This type of error can be prevented by ensuring that display script case statements handle
all possibly cases. For example, if your script counts the number of times that the scroll
button is pressed, it must reset the count before it exceeds the number of cases defined in
the statement. If only two cases are defined and the count reaches three, it will cause a
shutdown fault when it attempts to evaluate the statement.
In certain cases where shutdown occurred due to serious hardware problems, you will still
be able to acknowledge the shutdown, but you may not be able to put the instrument to
RUN mode. Please visit
http://www.micromodautomation.com for instructions to send the
instrument for repair.
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