
Safety engineering
Safe bus interfaces
PROFIsafe connection
60
EDS94AYAF EN 1.0
1.5
Safe bus interfaces
In the safety module, parameterised interfaces are provided for standardised safety bus
systems. With the selection of the bus system, the corresponding parameters are made
available.
Currently supported communication types:
ƒ
Operation without safety bus system
ƒ
Operation with PROFIsafe protocol
ƒ
Operation with FSoE via EtherCAT
1.5.1
PROFIsafe connection
1.5.1.1
Conditions
The SM302 supports the transmission of safe information on the PROFIsafe protocol
according to the specification "PROFIsafe − Profile for Safety Technology" from version 2.x
onwards of the PROFIBUS Nutzerorganisation (PNO). The basic device transmits the
PROFIsafe information to the safety module for safe evaluation.
Note!
A safety bus system can only be operated via the upper module slot (MXI1) of
the Servo Drive 9400.
Note!
The operation with PROFIsafe via PROFINET is only permissible according to
the "PROFIsafe − Profile for Safety Technology" specification, version 2.x.
1.5.1.2
Description
Addressing
In order that a data telegram reaches the correct node, an unambiguous PROFIsafe target
address is required. If PROFIsafe has been selected as safety bus, the safety address is
simultaneously accepted as PROFIsafe target address. This address must comply with the
corresponding configuration of the safety PLC.
PROFIsafe frame
The PROFIsafe message is sent in the first slot of a PROFIBUS data telegram or in the second
slot of a PROFINET data telegram.
This must be observed for the hardware configuration of the safety PLC!
PROFINET data telegram
header
PROFIsafe message
Data
Trailer
Slot 2
Slot 1