HEIDENHAIN TNC 407 (243 020) Service Manual - Manual (Page 10)

31-o
SERVICE MANUAL TNC
01.09.1995
Page
6
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).
In the case of gross errors, 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 the “emergency stop” state can be reset,
provided that the error cause has been eliminated.
Cause
1
3
4
5
6
7
8
9
A
B
C
D
E
F
G
H
CRC sum control data incorrect
CRC sum machine parameter incorrect
Check sum NC memory incorrect
Test plane incomplete will not run
Crosstalk between data bits in the RAM
Crosstalk between addresses in the 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
Time slice overflow
Command stack overflow control loop
Wrong command main processor
Wrong display mode main processor
Wrong boot command
Verify error with boot command “Load”
Wrong supplementary command with boot
command “Test”
J Boot logon successful
K EPROM-comparison CLP
L Wrong command CLP processor
M Operating voltage beyond tolerance range
N No PLC texts in PLC chip
0 Axis 4 and/or 5
with export version
P Inhibited software function activated (function
TNC 415 without CLP or geometry CPU
PLC activates at least 2 commands from the
Q-parameters
and zero shift
CPU number 1 main processor
2 geometry processor
3 CLP processor
If the error message “PROCESSOR CHECK ERROR = code; see above) comes up repeatedly,
send the
complete logic unit to
for repair. Please indicate the
error message and
the code.