HEIDENHAIN TNC 306 Service Manual - Manual (Page 96)

SERVICE MANUAL TNC 306/360
Page 89
HEIDENHAIN Service
19.1.4 Backing up RAM Data
Before the complete LOGIC UNIT, a board or an assembly are exchanged, or before a
software exchange, all data of the RAM must be stored on an external data medium.
- The machine parameters and the part programs are always processed in the RAM and
must be backed up on an external data medium.
- If the value of the machine parameter MP4010 is 1, the PLC program parts are processed
from the RAM and must be backed up (see section 15.2).
Parameter-
No. Entry Value Function
4010 +0 = EPROM mode
+1 = RAM mode PLC program from the RAM
or from the EPROM
- If the machine parameter MP730 is not 0, the multipoint axis error compensation is active
for one or more axes. In this case, the "Compensation Value List" needs to be backed
up as well (see section 15.2).
Parameter-
No. Entry Value Function
730 0 ... 15 multipoint axis error
compensation
Bit
0
1
2
3
+ 0
→
inactive
+ 1
→
active
+ 0
→
inactive
+ 2
→
active
+ 0
→
inactive
+ 4
→
active
+ 0
→
inactive
+ 8
→
active
X-axis
Y-axis
Z-axis
IV-axis
- If the machine parameter MP7260 is not 0, a central tool memory exists. The tool data
stored in the NC program No. 0 need to be backed up, too (see section 15.2).
Parameter-
No. Entry Value Function
7260 0
→
no central tool memory
1 ... 99 = central tool memory
entry value = number of tools
central tool memory
Note:
For reasons of safety, the machine parameters, the compensation value list (if active) and
the PLC program (if MP4010 = 1) should always be stored on an external data medium.
The procedure for data backup is described in section 15.2.