7.7 LEDs
Selecting LEDs from the diagnostics menu causes the six LEDs on the front panel to blink without affecting
their corresponding relays. All six relay will cycle individually as indicated on the screen.
7.8 Serial Ports
Testing the controller's standard and optional communication ports is made easy by connecting the ports
together as shown below, and selecting Serial Ports in the diagnostic menu. The controller does a self-
diagnostic by polling one communication port with the other to ensure correct operation. It gives a
Success or Failure report. If the optional communication ports 3 and 4 are not installed they will show a
failure as illustrated in below.
UM-1097
Revision B
Figure 60 Piezo Beep Test Menu
L E D
B l i n k
T e s t .
" N e x t "
T o
Figure 61 LED Blink Test Menu
P r e s s
E x i t .
84
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