Hi,

Its my first time to use SFC 58,59 to read PV from hart transmitter

I need to know if i should send the REQ as a pulse or always true signal to operate the function correctly 

And should the to function be active at the same time or I should send the REQ to the sfc58 first and then send another REQ to the sfc59

Thanks for your patience.. 

Thanks for your reply danw.

I found the attached sample but there's something not really clear to me

The FC 80 network 2 It should be responsible for the REQ sending to sfc58, 59 but I don't get what is I0.0 and I0.2 for. 

I'm lost in the jungle of undefined, abbrebiated programming terms.   I can't help you.