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PROFIsafe configurations
5
PROFIsafe configurations
PROFIsafe telegram only via E-bus and PROFINET/PROFIBUS
On account of the PROFIsafe policy, the use of PROFIsafe is permitted only via the PROFIBUS
and PROFINET fieldbuses or via a backplane bus, in this case for example the E-bus. The use of
PROFIsafe via other fieldbuses is impermissible for reasons connected with patent law. This must
be ensured through the use of the EL9930 segment end terminal.
The following Siemens AG patents are relevant according to the PROFIsafe profile:
- EP1267270-A2 Method for data transfer
- WO00/045562-A1 Method and device for determining the reliability of data carriers
- WO99/049373-A1 Shortened data message of an automation system
- EP1686732 Method and system for transmitting protocol data units
- EP1802019 Identification of errors in data transmission
- EP1921525-A1 Method for operation of a safety-related system
- EP13172092.2 Method and system for detection of errors
5.1
PROFIsafe configurations without EL9930
The use of the EL9930 is not necessary for the following configurations, because the PROFIsafe telegram
leaves the E-bus only via PROFIBUS or PROFINET. The PROFIsafe policy is thus not violated.
CX controller with PROFIBUS/PROFINET interface
The PROFIsafe telegram is transmitted to the TwinCAT runtime only via the E-bus and is then sent to the
PROFIsafe device via the fieldbus interface integrated in the CX controller.
Fig. 14: Valid PROFIsafe configuration - example 1
CX controller with PROFIBUS/PROFINET interface and EtherCAT network
The PROFIsafe telegram is transmitted to the TwinCAT runtime only via the E-bus and is then sent to the
PROFIsafe device via the fieldbus interface integrated in the CX controller. An extension via a further
EtherCAT interface integrated in the CX controller is easily possible as long as no PROFIsafe devices are
present on it.
28
Version: 2.0.0
EL9930
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