F_Parameter Definition Allowed values Default value
F_Dest_Add The unique F-Device address
which will be compared with the
set hardware switch address in
F-Device. The F_Dest_Add
parameter is a logic address
designation that can be
assigned freely but unambigu-
ously.
[1 – 255] for AC500-S
Safety I/O modules.
2
F_WD_Time Watchdog time in ms for receipt
of the new valid telegram
[10 – 10000] 100
F_iPar_CRC CRC over iParameters (manu-
facturer specific) of F-Devices
(Safety I/Os).
[0 - 4294967295]
Hex [0 - FFFFFFFF]
Dependent on the
module type
F_Par_CRC CRC1 signature calculation
across the F-Parameters
[0 - 65535]
Hex [0 - FFFF]
Dependent on the
module type
iParameters are individual F-Device parameters which are transferred to F-Devices with a proper
F_iPar_CRC parameter.
NOTICE!
After changing iParameters, you have to go to F-Parameter tab, re-calculate iParameter CRC and
paste it to F_iPar_CRC F-Parameter row. Otherwise, the new parameter set will not be accepted by
the F-Device because F_iPar_CRC will not be a valid one for a given iParameter set.
As for 3
rd
party F-Devices coming from GSDML files, one has no “Checksum iParameter” feature,
because PS501 Control Builder Plus / ABB Automation Builder does not know a specific algorithm
used for F_iPar_CRC calculation in 3
rd
party devices. One has to calculate F_iPar_CRC using a spe-
cial tool delivered by the F-Device manufacturer for engineering its F-Devices.
Another option is to contact the vendor of the F-Device and ask for F_iPar_CRC value for the given F-
Device iParameter. As soon as F_iPar_CRC is available for the given 3
rd
party F-Device, one can
paste it to the F_iPar_CRC row in F-Parameter editor.
Configuration and programming
System configuration and programming > Instantiation and configuration of safety modules/Definition of variable names
30.03.2017 AC500-S 187
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