UNO-1170A/AE User Manual 18
2.14 LED and Buzzer for System Diagnosis (Diag LED)
In
a “headless application” (an
application
without a
monitor display), it is
always
difficult
to
know the system status. Another
PC
may be needed to
monitor a headless device's status via RS-232 or
Ethernet. In
order
to
solve this problem, UNO-1170A/AE offers
a programmable LED
indicator
and buzzer.
They can be programmed
to show a
systems status by
LED
indicator flickering
and buzzer
alarm.
LEDEn: =0,
DIAG
LED disable
=1,
DIAG LED
enable
LEDS0 and LEDS1: LED
flickering speed
setting
bit (refer to Table 2.8)
SPKEn: =0, Speaker disable
=1,
Speaker
enable
SPKS0 & SPKS1: Buzzer alarming
setting
bit (refer to Table 2.9)
Table 2.7: LED & Buzzer Control Register
210H R/W DIAG LED Register
LEDS1 LEDS0 LEDEn
211H R/W Buzzer Register
SPKS1 SPKS0 SPKEn
Note: UNO-1170A/AE provides built-in examples to show how
to configure DIAG LED and Buzzer. Refer to console
mode examples in C:\Program Files\Advan-
tech\UNO\UNO_IsaDIO\Examples\Console.
(Please install DI/O driver from the UNO CD to use
these examples)
Table 2.8: Programmable LED Control Bit
LEDS1 LEDS0
Light on 0 0
Fast flicker 0 1
Normal flicker 1 0
Short flicker 1 1
