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Address Assignment and Installation
3.2 Assignment of PROFIsafe Address
ET 200pro Distributed I/O System - Fail-Safe Modules
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Operating Instructions, 05/2007, A5E00394073-02
Table 3-3 Addresses Occupied by Output User Data
Occupied bits in F-CPU per F-module: Bytes in the
F-CPU
7 6 5 4 3 2 1 0
4/8 F-DI/4 F-DO DC24V/2A PROFIsafe:
x + 0 - - - - Channel 3 Channel 2 Channel 1 Channel 0
F-Switch PROFIsafe:
X + 0 0 0 0 0 0 Channel 2 Channel 1 Channel 0
x = Module start address
WARNING
You can only access addresses occupied by user data. The other addresses occupied by
the F-modules are assigned for functions including safety-related communication between
F-modules and the F-CPU in accordance with PROFIsafe.
In 1oo2 sensor evaluation, only the lower-value channel of the channels combined by the
1oo2 sensor evaluation can be accessed in the safety program.
Additional Information
For detailed information about F-I/O access, refer to the S7 Distributed Safety, Configuring
and Programming manual.
3.2 Assignment of PROFIsafe Address
PROFIsafe Address
Each fail-safe module has its own PROFIsafe address in addition to the
PROFIBUS/Industrial Ethernet address. Before installing fail-safe modules, you must set the
PROFIsafe address of the F-module on each F-module.
PROFIsafe Address Assignment
The PROFIsafe addresses (F_source_address, F_destination_address) are automatically
assigned when the fail-safe modules are configured in
STEP 7.
The F_destination_address is shown in binary format in the "DIP switch setting" parameter in
the object properties for the fail-safe modules in
HW Config. You must obtain this PROFIsafe
address from the parameter assignment dialog box and set it on the fail-safe modules using
an address switch.
You can change the configured F_destination_address in
HW Config. To prevent addressing
errors, however, we recommend that you use the automatically assigned
F_destination_address.