Allen-Bradley 1747-OC Series, User Manual

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1747-UM001A-US-P - March 2000
Chapter
4
Starting the Open Controller
Before You Begin
This chapter describes how the open controller hardware powers up. This
chapter also describes the open controller configurations you can use when
powering-up a system.
While the procedures may be the same for both open controllers, different
BIOS settings are required for the 1747-OCE and 1747-OCF. This chapter
includes the necessary BIOS modifications for both open controllers.
Powering Up an Open
Controller CPU Module When you power up the open controller, the CONTROLLER and the
SCANNER simultaneously perform power-on self tests (POST). The
CONTROLLER goes through a boot-up process that is similar to that of a
personal computer. If you have a video module, boot-up messages appear
on the screen. The SCANNER indicates which test it is performing by
lighting the user-defined LEDS (LED 1, LED 2, LED 3, and LED 4). Table
4.A describes the SCANNER POST and provides approximate times for
each test.
Table 4.A
LED patterns for LED 1, LED 2, LED 3, LED 4 during POST
STATUS BATT
COM 1
LED 1
LED 2
LED 3 LED 4
COM 2
Indicator LEDs
(1747-OCF and 1747-OCE)
This LED: Has these states
(in this order) To indicate these tests: That take this
long (seconds):
LED 1 solid red
solid green
flashing red
flashing green software CRC checksum
128K bytes RAM
reserved
dual-port RAM 0.5
1.5
0.5
0.5
LED 2 solid red
solid green
flashing red
flashing green backplane
reserved
reserved
reserved 0.5
0.5
0.5
0.5
LED 3 solid red
solid green reserved
temperature sensor 0.5
0.5
LED 4 solid red
solid green interrupt controller
timer 0.5
0.5
Total Time 7.0
Allen-Bradley HMIs