Safety Integrated - Industry - Siemens

Important hardware component settings
Below, several important settings from the hardware configuration
of STEP 7 are shown for your information. In the STEP 7
project (sample code, see page 327) of the functional example
on hand, these settings have already been made.
Changes at the settings are possible (e.g. due to individual requirements).
Should you implement the changes (e.g. add an
additional module), the sample code has to be adapted accordingly.
Overview of the configuration
The PROFIBUS address is set at the IM 151 HF component via
DIP switches. In this functional example the address 3.
Setting the CPU 315F 2 DP
You reach the input dialog in the HW configuration of STEP 7
by double-clicking "CPU 315F-2 DP".
"Cyclic Interrupts" tab:
The call time of OB35 is configured with "50ms".
Important:
The monitoring time of the F-I/O-modules must be larger than
the call time of OB35.
Please use the Cotia table for selecting the monitoring time
("min. F monitoring time" sheet). At page 326 you find the link
to the Cotia table.
"Protection" tab:
A "Password" must be allocated in order to be able to set the
parameter "CPU contains safety program". It is only in this case
that all required F blocks for safe operation of the F-I/O-modules
are generated during the compilation of the STEP 7 hardware
configuration.
Password used this functional example: siemens
Functional Example No. AS-FE-I-011-V10-EN 323
Ex. No.
11