Woodward AtlasPC, Руководство по оборудованию

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AtlasPC Digital Control, Vol. I Manual 85586V1
96 Woodward
LON Channel
The PowerSense board has one LON channel.
Figure 8-15. Wiring Example–LON Interface to the PowerSense Board
Configuration Notes
•
Refer to Figure 8-15 for LON channel wiring.
•
The LON network must be terminated with load terminating resistors.
•
The LON channel is DSLC/MSLC and EGCP-3 compatible. It may only be
used with specified Woodward equipment.
Fault Detection (Board Hardware)
Each PowerSense board has a red fault LED that is turned on when the system
is reset. During initialization of a board, which occurs after every CPU reset, the
CPU turns the Fault LED on. The CPU then tests the board using diagnostic
routines built into the software. If the diagnostic test is not passed, the LED
remains on or blinks. Table 8-1 below explains what a blinking LED indicates.
The LED will blink the appropriate number of times, rest for one second, then
blink again in repetition. If the test is successful, the LED goes off. If the fault
LED on a board is illuminated after the diagnostics and initialization have been
completed, the PowerSense board may be faulty or may have the address DIP
switches configured incorrectly. The DIP switch setting must match the module
address set in the GAP application program. It cannot be the same address used
by any other card on the PC/104 bus. These are factory set at the time the
system is built.
Number of LED Flashes Failure
Off No failure, system OK
Solid Module in initialization mode
1 Hardware watchdog, CPU clock failure, reset fail
2 Unexpected Exception Error
3 RAM test failure
5 EEPROM failure
7 Kernel Watchdog Timeout
10 System Error
11 Board Identification Error
12 TPU RAM failure
13 Dual Port RAM test failure
14 QSM or ADC Initialization failure
15 Self test status failure
20 Invalid A/D converter selected
21 QSPI timeout
24 ADC auto calibration time-out
Table 8-1. PowerSense Failure Codes