Siemens 4 F-DI/3 F-DO DC24V PROFIsafe - Page 30

Address Assignment and Installation
3.2 Assignment of the PROFIsafe address
ET 200S Distributed I/O System - Fail-Safe Modules
30 Installation and Operating Manual, 08/2008, A5E00103686-07
Note
An address switch of the smallest possible dimensions is installed for reasons of space
saving. This makes it sensitive to pressure and objects with sharp edges. Always use a
suitable tool to operate the address switch.
Diverse tools suitable for activating the address switch are available on the market, for
example, the Grayhill DIPSTICK. A ballpoint pen may be employed if used carefully. It is
imperative to avoid any burring which would prevent the switch from reaching its home
position. Therefore, DO NOT use screwdrivers or knives to operate the address switch.
Rules for Address Assignment
WARNING
Observe the following rules when assigning addresses:
• Make sure that the address switch setting on the module matches the PROFIsafe
address in the
HW Config .
• Rule for PROFIBUS subnets:
The switch setting on the F-I/O address switch, i.e. its PROFIsafe destination address,
must be unique within the network* and station** (system-wide). You can assign up to
1,022 different PROFIsafe destination addresses.
Exception: The fail-safe I/Os in different I slaves may have the same PROFIsafe
destination address assigned, as they are only addressed within the station, that is, by
the F-CPU in the I-slave.
Rules for Ethernet subnets and combined PROFIBUS and Ethernet subnet
configurations:
The address switch setting on the fail-safe I/O, i.e. the PROFIsafe destination address
only*** has to be unambiguous within the Ethernet subnet, including all sublevel
PROFIBUS subnets and station-wide** (system-wide). You can assign up to 1,022
different PROFIsafe destination addresses.
Exception: The fail-safe I/Os in different I slaves may have the same PROFIsafe
destination address assigned, as they are only addressed within the station, that is, by
the F-CPU in the I-slave.
The networked nodes of an Ethernet subnet are characterized by having IP addresses
with a shared subnet address, i.e. the IP addresses are congruent with the "1" digits in
the subnet mask.
Example:
IP address: 140.80.0.2
Subnet mask: 255.255.0.0 = 11111111.11111111.00000000.00000000
Meaning: Bytes 1 and 2 of the IP address define the subnet; subnet address = 140.80.
*: A network consists of one or more subnets. "Network-wide" = across subnet boundaries.
**: "Station-wide" means one station in
HW Config (e.g. an S7-300 station or an I-slave)
***: Beyond Ethernet subnet boundaries if cyclic PROFINET IO communication (RT
communication) is excluded.