C300 Controller start up 
Loading IOMs and CMs 
158  Experion C300 Controller User's Guide   R301.1 
 Honeywell 11/06 
  Table 5 summarizes the controller start up activity and execution of the POST upon 
power up.  Figure 6 illustrates the startup routine and Boot mode controller states. 
Table 5  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 controller 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###, where ### indicates the number of 
of the test 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. 
See 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 
associated with a detected fault (Tnnn).   
Action:  If a fault 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.  
7 
If no faults occur, POST continues to execute and decides whether to 
transition to boot mode or application mode.  If a valid application image is 
present in the controller it is started, unless the controller has been 
commanded to shutdown, or is rebooted into the FAIL state.   
The Status LED indicates the state of the controller’s associated hardware. 
8 
The controller indicates ‘-bp-‘ on its display while the controller waits for its IP 
Address assignment and SNTP Server IP addresses from Server’s BootP 
service.  The controller may indicate ‘-TS-‘ on its display if BootP service is 
available, but time source is not available. 
Action:  Verify the correct Device Index is shown on the display (#nnn) and