Siemens SIMATIC S7 Configuration And Programming Manual page 56

Safety Note
!
If more than one F-CPU is accessible over a network (such as MPI) from one
programming device or PC, you must take the following additional measures to
ensure that the safety program is downloaded to the correct F-CPU:
Use passwords specific to each F-CPU, such as a uniform password for the
F-CPUs having the respective MPI address as an extension: "Password_8".
Note the following:
• A point-to-point connection must be used the first time a password is assigned
to an F-CPU (this also applies to the first time an MPI address is assigned to
an F-CPU).
• Before downloading a safety program to an F-CPU that has not yet been
assigned access protection with an F-CPU password, you must first revoke
existing access permission for any other F-CPU.
F-CPUs without Flash Card
The following safety notes apply when the safety program is transferred from a
programming device/PC to:
•
F-CPUs without a flash card (for example CPU 416F-2)
Safety Note
!
If the function of the safety program is not tested in the target F-CPU, you must
comply with the following procedure when transferring the safety program to the
F-CPU with a programming device/PC to ensure that the F-CPU does not contain
an "old" safety program:
1. Perform a general reset of the F-CPU using the mode selector or by means of
the programming device/PC.
2. Download the configuration in HW Config to the F-CPU.
3. Download the safety program to the F-CPU in the "Safety Program" dialog box.
4. Run a program identification (in other words, check whether the collective
signatures of all F-blocks with the F-attribute of the online and off-line block
container match, see manual, Sections 5.8.4 and 5.10.2).
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Product Information for the S7 Distributed Safety, Configuring and Programming Manual
A5E00169432-02