HEIDENHAIN TNC 415 (259 9x0) Service Manual - Manual (Page 10)

SERVICE MANUAL TNC 415B/425
Page 7
Issue: 20.08.95
3. Major Error Messages and their Causes
The integrated monitoring system distinguishes between minor and gross errors. Gross errors are
characterized by a blinking display (e.g. malfunctions of the encoders, of the drives and data processing
errors).
If a gross error occurs, the control opens the contact "Control Ready for Operation". This causes an
emergency stop of the machine tool.
By switching off the main switch or by pressing
END
, the emergency stop state can be reset, provided that
the error cause has been eliminated.
Display (blinking) Error Cause
PROCESSOR CHECK ERROR YX X = 0
1
2
3
4
5
6
7
8
9
A
B
CRC sum control data incorrect
CRC sum machine parameters incorrect
Check sum NC-memory incorrect
Test plane incomplete / will not run
Crosstalk between data bits in RAM
Crosstalk between addresses in RAM
Stack overflow
CRC sum PLC program ASCII
CRC sum PLC program OP-Code
CRC sum test section
Software error
Wrong interrupt
Differentiation with register V0:
08
bus error
0C address error
10 illegal instruction
14 division by 0
18 error output for CHK command
(check range)
20 error output for TRAPV command
(trap on overflow)
24 privilege infringement (supervisor
command in the user mode)
28 emulator trap
2C emulator trap
30 -
34 -
38 -
3C interrupt vector not initialized
40 interrupt vector not initialized
44 interrupt vector not initialized
48 interrupt vector not initialized
4C -
50 -
54 -
58 -
5C -
60 false interrupt (with priority 0)
64-7C interrupt auto-vector 4-7,
user interrupt $100-$3FC
94-BC TRAP #5 - #15