7. C300 Controller Operation
7.1. C300 Controller start up
174
Series 8 C300 Controller User's Guide
Honeywell
R500
April 2017
7.1
C300 Controller start up
The C300 Controller module executes a series of tasks automatically when power is
applied to the controller module. These tasks include:
Power-On Self Test (POST) to verify the presence and integrity of the controller
module hardware.
Initialization of the hardware and software environment.
Determination of whether to transition to the application image, if present.
Table 4 summarizes the controller start up activity and execution of the POST upon
power up. Figure 5 illustrates the startup routine and Boot mode controller states.
Table 4 C300 Controller Startup and Power On Self Test routine
Stage
Description
1
The C300 Controller
Power
LED lights upon insertion of the module onto a
powered IOTA board.
2
The C300 boots up using firmware installed in the flash memory.
(Initial firmware boot image is installed in the factory.)
3
A Power-On Self Test (POST) is performed as part of the C300 Controller
start up. Controller display shows T
nnn
, where
nnn
indicates the number of
the test currently being executed during POST.)
4
The
Status
LED briefly shows all of its colors (Red, Green, Orange), and
then remains solid Red until POST completes.
5
The
four-character display
walks through a series of horizontal and vertical
bars, as well as several brightness levels. Once completed successfully, the
display indicates the progress of the POST.
C300 Faceplate indicators/displays
for a complete listing
and description of the controller's status indications and displays.
6
Progress of the POST is shown on the C300's faceplate display. If a fault
occurs during POST, the test halts and the display shows the test number
(
Tnnn
) associated with the detected fault.
Corrective Action
: If a fault occurs and halts the POST, then reset the
controller and allow the POST to execute once more. If the fault persists,
then replace the failed controller module.
