HEIDENHAIN TNC 306 Service Manual - Manual (Page 9)

SERVICE MANUAL TNC 306/360
Page 7
HEIDENHAIN Service
Screen Display (blinking error message) Error Cause
PROCESSOR CHECK ERROR X X = 0
1
2
3
4
5
6
7
8
A
B
C
D
E
F
H
L
M
P
R
CRC sum control data incorrect
CRC sum machine parameter incorrect
Check sum of NC memory incorrect
Test plane incomplete
Crosstalk between data bits in the RAM
Crosstalk between addresses in the RAM
Stack overflow
CRC sum PLC program ASCII
CRC sum PLC program Opcode
Software error main processor
Software error display task
Time slice overflow
Command stack overflow control loop
Wrong command MAIN PROCESSOR
TASK
→
CONTROL LOOP TASK
Wrong display mode MAIN PROCESSIR
TASK
→
DISPLAY TASK
Control loop: "counter not latched"
Wrong control loop command
Operating voltage out of tolerance
Disabled software function is activated
PLC Positioning, datum shift (PLC), spindle
orientation or limit switch
shift active with MP7440 bit 2 = 1 or
MP3030 = 1
If the error message "PROCESSOR CHECK ERROR XX" (X= identification letter, see
above!) comes up repeatedly, please return the complete logic unit to HEIDENHAIN for
repair. Indicate also the error message and the identification letters.
Notes