Using The Leds; Status Indicator - Allen-Bradley 1747-OC Series User Manual

7-6 Using the Open Controller
wires to dc or TTL input module

Using the LEDs

BATT
STATUS
COM 1
COM 2
LED 1
LED 2
LED 4
LED 3
1747-UM001A-US-P - March 2000
A watchdog wiring kit comes with the open controller CPU module. It
includes four pins and one connector.
Figure 7.7
Connecting the external watchdog contact
watchdog contact wiring kit
(comes with the open controller)
The following specifications define watchdog components:
Component:
housing
pins
recommended hand crimp

STATUS indicator

The STATUS indicator reports the status of the open controller scanner
CPU. Table 7.B lists the LED patterns for STATUS.
Table 7.A
LED patterns for STATUS during normal operation
These states are possible: Which mean:
yellow
flashing green
solid green
flashing red
solid red
off
Specification:
AMP 87499-4
AMP 1-87309-4
AMP 90202-2
running POST
idle mode; not scanning I/O
scan mode; scanning I/O
I/O fault
internal fault / POST failure
invalid state
contact on the open controller
(side view)