Siemens S7-300 - Assigning Profisafe Address (Starting Address of F-SM)

Addressing and installation
4.3 Assigning the PROFIsafe address
Fail-safe signal modules
Installation and Operating Manual, 01/2010, A5E00085586-10
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4.3.2 Assigning PROFIsafe Address (Starting Address of F-SM)
Introduction
In order to use
● SM 326; DI 24 x DC 24 V (order no. 6ES7326-1BK00-0AB0),
● SM 326; DI 8 x NAMUR,
● SM 326; DO 10 x DC 24V/2A and the
● SM 336; AI 6 x 13 Bit
in safety mode, you must perform the following steps:
1. Set the module start address
2. Set safety mode
3. Set the start address of the fail-safe signal module at the address switch before you
install it
Setting the module start address
You set the module start address similar to S7-300 standard I/O modules in the object
properties of the module using
STEP 7HW Config (for information on the permitted address
space, refer to the
Channel addressing chapter).
Setting safety mode
Set "Safety mode" in the object properties of the module in HW Config .
Address switch
The 10-bit DIP switch for addressing is installed in the rear panel of the fail-safe signal
modules. This switch is used to determine:
● whether to operate the module in safety mode or in standard mode
● In safety mode: the module start address (PROFIsafe address = start address/8 of the F-
SM)
The F-SMs are set by default for operation in "standard mode", that is, all switches are in up
position. Alternatively, you can set all switches to down position. See figure below.