Redundancy_S7-1500H versus S7-400H

Hi, could someone please shed some light on the key differences that sets both redundant CPUs (1500H vs 400H) apart? I want to learn the main technical differences to enable me to determine quickly (as a rule of thumb) which CPU will better fit the job at hand. Thanks!

Hi AutoGen_5043068,

S7-400H setup options

SIMATIC S7-1500 S7-1500R/H redundant system

Hazard_7

Hi AutoGen_5043068,

You should always select a system according to the needs of your project, I attach some information that will help you when choosing a system.

S7-400H setup options

SIMATIC S7-1500 S7-1500R/H redundant system

If you have any questions, please let me know so that I can help you.

 Hi Hazard_7,

Thank you the response. However, I am looking for more of a general unique differentiator between the both controllers. For example, I know that the S7-400 allows the user to Configure in Run, that gives the S7-400 a huge advantage over the S7-1500. Additionally, I believe the S7-1500 has faster processing power. 

Would you be able to share more information on these key differentiators?