Experimental Physics and
Industrial Control System

Maren Purves <[email protected]> · Mon, 26 Jan 2015 09:20:27 -1000

On 01/26/15 08:27, Emmanuel Mayssat wrote:

The ALH indeed works well.
But I am not sure this is the most reliable solution for 3 reasons.
1/ The ALH runs on the client PC
2/ The ALH runs on PC hardware.

any hardware can fail, that aside:

3/ The ALH can be turned off by operators. (speakers can simply be
turned off to make the alarm system fail)

the depends on how you 'broadcast' the alarms. We run ours on headless
machines, and they send email (and in at least one case text messages).
So, while the operators my be able to kill the processes, depending
on whether you let them, just turning off speakers wouldn't do anything
here.

Maren

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System