Delta Tau GEO BRICK LV Manuel D’Utilisation
Geo Brick LV User Manual
Troubleshooting
262
Watchdog Timer Trip
The watchdog timer trigger in the Geo Brick LV illuminates the red WD LED and interrupts
communication. It occurs if any of the following is true:
communication. It occurs if any of the following is true:
PMAC CPU over-clocked
In this mode, the CPU signals that is has been overloaded with computation and cannot
In this mode, the CPU signals that is has been overloaded with computation and cannot
accomplish tasks in a timely manner. i.e. bad programming such as an infinite loop, or too much
computation (Kinematics) requiring faster CPU option.
Wrong clock settings
In this mode, the user has downloaded or written bad values to clock setting parameters.
In this mode, the user has downloaded or written bad values to clock setting parameters.
Hardware +5V failure (internal)
In this mode, the internal 5V logic circuitry has failed. Check 5V Led Status.
In this mode, the internal 5V logic circuitry has failed. Check 5V Led Status.
Downloading wrong configuration file (I4900).
In this mode, the user has reloaded a bad configuration file.
For example, a configuration file uploaded from a 4-axis Geo Brick LV (Servo IC 1 parameters
set to zero) and restored into an 8-axis unit, thus writing zero to the second Servo IC clock
parameters will cause a watchdog. Commenting out variables I7100…7106 (or forcing them to
hold the same values as I7000…I7106) eliminates the watchdog problem.
In this mode, the user has reloaded a bad configuration file.
For example, a configuration file uploaded from a 4-axis Geo Brick LV (Servo IC 1 parameters
set to zero) and restored into an 8-axis unit, thus writing zero to the second Servo IC clock
parameters will cause a watchdog. Commenting out variables I7100…7106 (or forcing them to
hold the same values as I7000…I7106) eliminates the watchdog problem.