Printed in the Federal Republic of Germany TR-Electronic GmbH 2019, All Rights Reserved
11/21/2019 TR - ECE - BA - GB - 0139 - 02 Page 135 of 154
6.8 F-parameter (F_Par) – description
6.8.1 F_Check_iPar
The parameter is unchangeably set to NoCheck. This means that the iParameter checksum value is
not evaluated.
6.8.2 F_SIL
F_SIL specifies the SIL (safety class) the user expects from the respective F-device. It is compared
with the manufacturer’s locally stored information. The measuring system supports the safety classes
“no”, “SIL” and “SIL1” to “SIL3”.
6.8.3 F_CRC_Length
The measuring system supports the CRC length of 3 bytes (PROFIsafe V2.4) or 4 bytes (PROFIsafe
V2.6.1). This value is preset and cannot be changed.
6.8.4 F_CRC_Seed / F_Passivation
The F-parameters F_CRC_Seed and F_Passivation allow the configuration according to
PROFIsafe Version V2.4 or V2.6.1. The F-parameter combination is not adjustable but is specified by
selecting a safety-related (sub-) module. If these two parameters are not available, the safety-related
data is transmitted with the PROFIsafe Basic Protocol (BP) V2.4, otherwise with the
PROFIsafeExpanded Protocol (XP) V2.6.1. The default setting for the parameter
F_CRC_Seed = CRC-Seed32 and for the parameter F_Passivation = Device/Module.
6.8.5 F_Block_ID
As the measuring system supports device-specific safety parameters such as “Integration time safety”,
this parameter is preset to the unchangeable value “1 = F_iPar_CRC”.
6.8.6 F_Par_Version
The parameter identifies the PROFIsafe version “V2-Mode” implemented in the measuring system.
This value is preset and cannot be changed.
6.8.7 F_Source_Add / F_Dest_Add
The parameter F_Source_Add defines the PROFIsafe source address and the parameter
F_Dest_Add defines the PROFIsafe destination address.
The PROFIsafe destination address must correspond to the address stored in the measuring system,
see also Page 20.
Default value F_Source_Add = 1
Default value F_Dest_Add = 1
F_Source_Add ≠ F_Dest_Add.
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