LOOP TEST
This function helps pinpoint loop wiring/communication faults by continually polling all loop devices
for a specified number of times and reporting back both good and bad polls.
Enter AL3 (4444) > Engineer Functions > Loop Test.
When selected, press the Accept
4button, select loop 1 and enter how many times you want the panel
to poll each loop device, for example 5 times, as shown below:
Press the Accept
4button, the test will begin and a test status window will appear, showing the address
currently being polled together with a running total of the number of good and bad polls.
The test will continuously scroll through the loop devices.
To halt this function press the Escape
3button.
The test results will appear in a window similar to the one below.
Use the scroll buttons to scroll through the polling results for the loop devices.
Test Loop : 1
Number of Polls for each device : 5
Loop:1 Device:1
Good Polls:128 Bad Polls:3
A high number of bad polls in a particular section of the system indicates a problem area for
investigation, e.g. voltage drop, poor connection, etc.
To assert the LED output of the device being viewed, press the More Information button. You will be
presented with a window similar to the one below:
Press the Accept
4button to activate the LED of the selected device. Once activated, you will be given
the option to turn off the device LED by pressing the Accept
4button again.
Loop:1 Device: 1
Turn ON device LED?
CAST XFP 16 ZONE ANALOGUE ADDRESSABLE FIRE ALARM PANEL
ENGINEERING MANUAL • Approved Document No. DFU5010000 Rev 4 • Page 43 of 48
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