Specifications

Indicator LEDs
High Current Triac Option
Compac Industries Ltd.
Page 65
www.compac.co.nz
Indicator LEDs
C4000 microProcessor PCB
D1
D5
D6
D7
POWER LED
WATCHDOG LED
COMMS RXD LED
COMMS TXD LED
Figure 5. Location of Power, Watchdog, RXD & TXD LEDs
Power LED
The Power LED (refer Figure 5) lights when the processor board has
power. If this LED flashes, this indicates that the processor has a fault on
the processor power supply.
WatchDog LED
The Watchdog LED (refer Figure 5) lights only if the watchdog circuit has
been triggered, thereby indicating that a processor fault has occurred.
TXD & RXD LEDs
The TXD and RXD LEDs (refer Figure 5) indicate polling of communications
to/from a controller. The RXD LED flashes whenever any communications
polling is received and the TXD LED flashes whenever the C4000
processor responds to polls for its respective pump number(s).