Extended length timer

[RaceMechaniX]

Background: We are using an ACL as an engine dyno logger without an ECU connected. We are running durability tests and have hit limit with the built in timers. Currently all the timers have a maximum limit of around 33hours I believe due to the hexadecimal limit.

Question: How can I set-up an hour or tenth of an hour timer that is not based on one of the second based timers?

Thx,

Tyler