
P800 Operating Manual
14
To find out more details of what each fuse does, for a particular part, see the back of the
device support list.
The security setting is reset to not secure when the P800 is powered up, or a new device is
selected, except when selected via AUTOmatic electronic ID.
2.4.5 Display Checksums
!
SEQ then select DISPLAY CHECKSUMS
After programming, verifying, and loading, the RAM checksums may be displayed.
Note: The checksums displayed are of the RAM not the device, and so should not be used
to check if a part verified, or programmed correctly.
Select the required option using
←
and
→
, then press ENTER.
After a device function, the checksums for sockets 5, 6, 7, 8 can be displayed by pressing
→.
2.5 Device Limits
All device functions (e.g. Load or Program) have 3 associated parameters:
DEV START
the device address from which the function should start;
DEV STOP
the device address at which the function should stop;
RAM START
the RAM address from which the function should start;
These are also used when calculating the checksum and CRC and can be altered by the
user.
!
LIMITS
Enter the addresses (in Hexadecimal) using 0-9, A-F.
The cursor can be moved using the
↑
and
↓
keys.
When correct press ENTER.
If invalid addresses are chosen (e.g. DEV START higher than DEV STOP) the ENTER key
will not let the user out of the function. If the EXIT key is pressed the limits will not be
changed.
This function can be disabled: see section
2.9.3
for details.
!
The default limits for a device will be used when a new device, or new mode is
selected.