Siemens Simatic PC Panel PC 870, Equipment Manual

Page: 93 / 154

Fault Diagnosis
Release 11/02
6-9
SIMATIC Panel PC 870 Computing Unit, Equipment Manual
Display
(hex)
Description Meaning
89 TP_ENABLE_NMI Enable NMI
8C TP_FLOPPY Initialize the floppy controller
90 TP_FDISK Initialize the hard disk controller
8B TP_MOUSE Test the internal mouse interface
95 TP_CD Test the CP
92 TP_USERPATCH2 Area for own initializations
98 TP_ROM_SCAN Search for BIOS expansions
69 TP_PM_SETUP Initialize power management
9E TP_IRQS Enable the hardware IRQ
A0 TP_TIME_OF_DAY Set date and time
A2 TP_KEYLOCK_TEST Set keylock default settings
C2 TP_PEM_LOCK Stop error manager
C3 TP_PEM_DISPLAY Display errors (if any)
A8 TP_ERASE_F2 Clear F2 message
AA TP_SCAN_FOR_F2 Was F2 pressed?
AC TP_SETUP_CHEK If necessary, Switch F1/F2 message
AE TP_CLEAR_BOOT Clear self-test flag
B0 TP_ERROR_CHECK Check for errors
B2 TP_POST_DONE End of self-test
BE TP_CLEAR_SCREEN Clear screen
B6 TP_PASSWORD Password query (option)
BC TP_PARITY Cancel the parity flag
BD TP_BOOT_MENU Display boot menu (option)
B9 TP_PREPARE_BOOT Prepare booting
C0 TP_INT19 Booting via interrupt 19
00 Message after complete power up
If the INSERT key is pressed while the system is booting, three short beeps are
issued indicating that the initialization of the special PC hardware has been
skipped.
If the computer unit does not start up properly, report the Hex code of the POST to
the hotline.