Phoenix Contact FL PN/PN SDIO-2TX/2TX handleiding

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8220_en_06 PHOENIX CONTACT 69

A Appendix: Terms for PROFIsafe

Some of the terms that are used in connection with PROFIsafe in this 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 Method for ensuring that the safe data is transmitted completely and in the correct order.

Reintegration The removal of passivation for the reintegration of the previously passivated PROFIsafe

device (see also "Passivation").

F-Parameter (According to PROFIsafe System Description, Version 09, November 2007)

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_S/D_Address/

F_Source/

Destination_Address

(F-Address for short)

A unique address for F-Devices within a PROFIsafe

island. The technology part of the F-Device compares

the value with the address switch locally or with an

assigned F-Address in order to check the authenticity of

the connection.

F_WD_Time Specifies the millisecond value for the watchdog timer.

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 A checksum that is calculated from all iParameters of

the technology-specific part of the F-Device.

F_Par_CRC A CRC signature, which is created via all F-Parameters

and ensures error-free transmission of the F-

Parameters.

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