KUUMIC OY
NETWORK CONTROL
MIMIC BOARD
13
3.4 LED-TEST
The address 5000 dec is reserved for the nonvolatile RAM-memory
initialize and LED-test.
At the beginning the nonvolatile RAM memory should be cleared by
writing the value 7 dec. to the address 5000 dec.
The following table shows the test address definition:
VALUE (dec.)
EFFECT
0
all LEDs and segments are OFF
1
all LEDs and segments are ON
2
all LEDs blinking, slow rate
3
all LEDs blinking, high rate
4
every odd LEDs ON
5
every even LEDs ON
6
finish test
7
initialize nonvolatile ram-memory
When writing value 0 to the address 5000 dec., all the LEDs turn off.
They are off appr. one minute, and after that they turn back to the state
they were before the test.
When writing value 1 to the address 5000 dec., all the LEDs turn on
(illuminate). They illuminate appr. one minute ,and after that they turn
back to the state they were before the test.
The state of LEDs can be changed before the minute is over by writing
to the address the opposite value.