Technical data

Basics of Designing a Program Structure
4.2 Blocks in the User Program
Programming with STEP 7
Manual, 05/2010, A5E02789666-01 87
Recommendations
• Where possible, apply the default value.
• Increase this value only if you are using the CPU primarily for communication purposes and
your user program is not time critical.
• In all other cases, only reduce the value.
• Set the process mode (S7-300 only), and limit the time needed there for test functions.