F_M_Di24 - Siemens SIMATIC S7 F Manual

Fail-Safe Blocks
8.6.3

F_M_DI24

Function
The F module driver reads the digital values and error information of a 24-channel,
fail-safe digital input module and makes the data available to the associated F
channel driver (F_CH_DI).
If there is a redundant module, the digital values of both modules are evaluated.
The F module driver is automatically inserted at the beginning of the run-time
group which also contains the associated F channel driver F_CH_DI. The I/Os of
the F module driver are automatically interconnected and supplied with values.
The outputs DIAG_1 and DIAG_2, at which error information is output, are
important.
I/Os
Name
Inputs: CRC_IMP1
CRC_IMP2
DISC_ON
DISCTIME
TIMEOUT
SENS_RED
RED
LADDR
LADDR_R
Fail-Safe Systems
A5E00085588-03
Data Type Explanation
WORD CRC via implicit data SM1
WORD CRC via implicit data SM2
(only when RED = 1)
BOOL Carry out discrepancy analysis Supplied
DINT Discrepancy time in ms
F_DINT Monitoring time in ms for vital-
sign monitoring
F_BOOL 1=1oo2 evaluation of the
sensors
F_BOOL Module Redundancy
0: SM configured as non-
redundant
1: SM configured as redundant
INT Logical address of the module
(SM1)
INT Address of the configured
redundant SM2 module (only
when RED = 1)
Default
Supplied
automatically
Supplied
automatically
automatically
Supplied
automatically
Supplied
automatically
Supplied
automatically
Supplied
automatically
Supplied
automatically
Supplied
automatically
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