What is the difference between Telegram and Technology Object for S120 control ?

Dear Experts,

If I use PLC S7-300/400 series is it can use TO or only use Telegram ?

Which PLC series can use both type ?

Which PLC series use only TO or Telegram ?

Best Regards,

Vorapob

ChristophD

hi,

s7-300/s7-400 -> Only telegram

S7-300T -> TO

S7-1200/S7-1500 -> both

 Dear ChristophD,

Which type is better between telegram and TO ?

I mean in your experience.

Best Regards,

Vorapob

Hello,

Telegram is selection or defining communication between drive & controller where as TO is software blocks whuch are preprogramed functions included in SIMATIC controller so as to achieve techonolgical functions. These two are different & can not be comparable.

Please refer What is a telegram &  The Technology Objects (TO) of SIMATIC S7-1500(T) for more details.

HTH