Safety Integrated - Industry - Siemens

Ex. No.
11 Basic Performance Data
Load memory and main memory
Determining the memory parameters:
■ Open STEP 7 project of the functional example in the
SIMATIC Manager
■ Determine load memory and main memory for all blocks in
the block container
Runtimes
Total Standard
blocks
F blocks
(fail-safe)
Load Memory 56.5 KByte 1.2 KByte 55.3 KByte
Main Memory 39.1 KByte 0.5 KByte 38.6 KByte
Time Note
Total cycle time (standard minimum 1ms Read from S7-CPU
program and safety program)
maximum 12ms
Maximum runtime safety program 13ms Calculated with
Cotia table
Determining the total cycle time:
■ Load STEP 7 project into S7-CPU, set S7-CPU to run, and
operate the functional example.
■ Read the measured cycle time in the "Module Information
CPU / Scan Cycle Time" tab
Determine max. runtime of the safety program:
■ The value is calculated with the Cotia table for
"S7 Distributed Safety" V5.4.
This file is available on the internet:
http://support.automation.siemens.com/ww/view/en/
21627074
326 Functional Example No. AS-FE-I-011-V10-EN