Alarm Script not writing to a file.

Question

Hi there,

I'm struggling with an alarm script, like in the below. This CuSum chart is generating 7 alarms, and therefore should be generating the log file, however it is not, or not every time the script is run, which is strange. Any ideas on what's going on? I'm using version 17.2 pro.

Names Default To Here( 1 );
dt = Open( "$SAMPLE_DATA/Quality Control/Oil1 Cusum.jmp" );
obj = dt << CUSUM Control Chart(
Y( :weight ),
H( 2 ),
Lower Side( 1 ),
Target( 8.1 ),
K( 0.025 ),
Sigma( 0.02 ),
Head Start( 0.05 ),
Alarm Script(
contents = Substitute( "^QCTEST in column ^QCCOL in sample ^QCSAMPLE.",
"^QCTEST", Choose( qc_test,
"One point beyond the control limits" ),
"^QCCOL", qc_col,
"^QCSAMPLE", char( qc_sample ));
filename = Convert File Path("$TEMP/test log.txt", absolute);
if (File Exists( filename ), Save Text File( filename, contents, Mode("Append") ), Save Text File( filename, contents) );
),
);
// Turn on Test 1
obj << Test 1(1);

jthi · Answer

Might be so but currently it seems that it only triggers on alarms, not on shift change. Maybe create a wish list item in hopes to get a support for "shift change script" or something similar? Currently you can get those into a separate table and trigger your own actions based on the table

Names Default To Here(1);
dt = Open("$SAMPLE_DATA/Quality Control/Oil1 Cusum.jmp");
obj = dt << CUSUM Control Chart(
	Y(:weight),
	H(2),
	Lower Side(1),
	Target(8.1),
	K(0.025),
	Sigma(0.05),
	Head Start(0.05)
);
dt_summary = obj << Save Summaries;

r = dt_summary << Get Rows Where(Is Missing(:Shift Start));
dt_summary << Delete Rows(r)

BrianK · Answer

possibly, but would seem strange, given the purpose of a CuSum graph is to detect a shift in data, and this is indicated in Jmp with the vertical purple lines as per above.  Its on a shift in data a user would want the alarm script to run.

jthi · Answer

Maybe shift "test" isn't considered an alarm so it won't trigger the alarm script.