152 Appendix
WAGO-I/O-SYSTEM 750
753-668/000-004 4FAI 0/4-20 mA Diff PROFIsafe
Manual
Version 1.0.0, valid from HW/SW Version 01/01
Table 57: PROFIsafe F Parameters
F parameters
Default
Value
Description
F_iPar_CRC
55598
(0xD92E)
The
F_iPar_CRC
parameter specifies a
comparison value for the CRC value over the
iParameters (iPar_CRC). The PROFIsafe data
exchange only starts when the values for
F_iPar_CRC and the iPar_CRC match. If they
differ, the F I/O module makes a restore request
of the iParameters from the iPar server.
The “F_iPar_CRC” value “0” is a special case.
This value switches the F I/O module into test
mode.
The CRC value (iPar CRC) is displayed by the
WAGO parameterization tool and must be
transferred with the configuration tool of the safe
PLC to the F parameter of the F I/O module.