Firmware download
Crocus CNV
140
Reference manual
11.3 Downloading in boot mode
When a flash memory software download has failed or when a flash memory error occurs, it may be
possible that the Crocus CNV becomes inaccessible. In that case, new software can still be downloaded
by setting the Crocus CNV in boot mode. This is done by means of the start-up mode DIP switch.
The location of the start-up mode DIP switch is:
DIP switch name
DS5 (TT) no.
DS2 (CV) no.
Setting Function
on
Start up from flash memory.
start-up mode
1
off
Start up in boot mode.
The Crocus CNV can be forced in boot mode by setting the appropriate DIP switch to
off
. If a new
software download is successfully completed, the DIP switch must be reset to
on
in order to restart
operation from flash memory.
Note that this DIP switch setting cannot be overruled by TMA.
To download firmware to a Crocus CNV in boot mode, proceed as follows:
Step Action
1
In case of a …
•
TT, open the housing as described in Section
3.1.4 - Changing DIP switch and strap
settings of the Table Top
.
•
CV, remove the card from the CN4 card nest as described in Section
3.2.5 -
Changing DIP switch and strap settings of the Card Version
.
2
In case of a …
•
TT, set DIP switch bank DS5 position 1 to
off
. To locate this DIP switch bank, refer to
Section
3.1.1 - Location of the DIP switches and straps on the Table Top
.
•
CV, set DIP switch bank DS2 position 1 to
off
. To locate this DIP switch bank, refer to
Section
3.2.1 - Location of the DIP switches on the Card Version
.
3
In case of a …
•
TT, close the housing without fastening the screws.
•
CV, insert the card in the CN4 card nest without fastening the screws.
⇒
The Crocus CNV is now in boot mode.
4
Now proceed as explained in the previous section, Section
11.2 - Downloading with
TML
.
5
When the download is finished, reset the corresponding DIP switch to
on
. Refer to step
2.
6
In case of a …
•
TT, close the housing.
•
CV, insert the card in the CN4 card nest.
⇒
The Crocus CNV reboots in normal operation mode.
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