Following CPUs statuses(it is running or it is stopped) from SCADA

Hi Flavio,

Im workin on a Tunnel Automation project. There are over 100 CPUs. For the system following screen on SCADA, i need to know how CPUs give informations those are stopped. I cant use timet or counter trick because i have very finited number of tag.

I searched and i find abouth something TASK_INFO instant block. It counts on every cycle and if cpu is stopped or reset, it goes 0. But i tested it and saw that it doesnt count when i start the program. Is there a simple way to do this or how TASK_INFO block works? Could you please help me?