The T1 motor controller hearbeat tripped (noticed this morning). 

This does not seem prevent beam delivery or target ladder actuation (see screenshot, target still ready for beam).

An improperly functioning hearbeat led on a controller may indicate that the controller is beginning to fail.

Interestingly, the profile monitor 'out' status registers a warning - the two may be related: i.e. some electrical work interrupted the two signals. 

This problem will be looked at in the coming days.

(Update) 

After consulting with Tony Tateyama from Cyclotorn Controls group, the two trips were re-set and the controller heartbeat is now 'green' again.

The motor controller is likely still healthy, seeing how it was installed only a few years back (~2015). The cause of the trip should be some electrical work on the mezzanine.

(Update - May 08, 2023)

The controller HB tripped again (noticed in the morning). Coordinated with operators to have it re-set. This was done automatically by driving the target ladder to position 2 then back to position 0.

(Update - May 16, 2023)

The controller HB on T2 tripped, and re-set by ops.