Phoenix Contact RFC 4072S, User Manual, Page: 241 / 272

Appendix: terms for PROFIsafe
108580_en_02 PHOENIX CONTACT
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B Appendix: terms for PROFIsafe
Terms that are used in connection with PROFIsafe in this user manual are described below.
A definition of PROFIsafe terms is also provided in the PROFIsafe profile.
CRC Cyclic Redundancy Check
A cyclic redundancy check is used to verify the validity of the process data contained in the
safety telegram, check whether the assigned address relationships are correct, and verify
the safety-related parameters. This value is part of the safety telegram.
Consecutive number Consecutive number
Method for ensuring that the safe data is transmitted completely and in the correct order.
Reintegration Removal of passivation for the reintegration of previously passivated F-Devices (see also
“Passivation” ).
F-Parameters (According to PROFIsafe System Description, version of April 2016)
F-Parameters contain information for adapting the PROFIsafe layer to specific customer
specifications and for checking the parameterization by means of a separate method
(diverse). The main F-Parameters are:
F_Source_Address /
F_Destination_Address /
F_Source_Add /
F_Dest_Add (F-address
for short)
Unique address for F-Devices within a PROFIsafe island. The
technology part of the F-Device compares the value with the
local address switch or with an assigned F-Address in order
to check authenticity of the connection.
As of PROFIsafe profile V2.6.1, a distinction is made between
two address types, which must be specified by the manufac-
turer in the F-Device-specific user documentation:
Address type
1:
The F-Device only checks the F_Destina-
tion_Address.
Address type
2:
The F-Device checks the F_Destination_Ad-
dress and the F_Source_Address.
F_WD_Time Specifies the time for the watchdog timer in milliseconds. The
timer monitors the time that elapses until the next valid
PROFIsafe message is received.
F_SIL Indicates the SIL that the user can expect from the relevant F-
Device. It is compared with the manufacturer’s specification
that is stored locally.
F_iPar_CRC Checksum that is calculated from all iParameters of the tech-
nology-specific part of the F-Device.
F_Par_CRC CRC signature that is created across all F-Parameters and
ensures error-free transmission of the F-Parameters.