Siemens SIMATIC S7 F User Manual

Fail-Safe Blocks
Fail-Safe Systems
8-64 A5E00085588-03
8.6.4 F_M_DO8
Function
The F module driver reads the digital output values from the associated F channel
drivers (F_CH_DO) and writes them to an 8-channel, fail-safe digital output
module. In addition, it reads the error information of the module and makes the
data available to the associated F channel driver (F_CH_DO).
If there is a redundant module, the digital values are written to both modules.
The F module driver is automatically inserted at the end of the run-time group
which also contains the associated F channel driver F_CH_DO. 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 Data Type Explanation Default
Inputs:
CHADDR00 F_WORD Interconnection with the F
channel driver of channel 0
Interconnected
automatically
...
CHADDR07 F_WORD Interconnection with the F
channel driver of channel 7
Interconnected
automatically
CRC_IMP1 WORD CRC via implicit data SM1 Supplied
automatically
CRC_IMP2 WORD CRC via implicit data SM2
(only when RED = 1)
Supplied
automatically
TIMEOUT F_DINT Monitoring time in ms for vital-
sign monitoring
Supplied
automatically
RED F_BOOL Module Redundancy
0: SM configured as non-
redundant
1: SM configured as redundant
Supplied
automatically
LADDR INT Logical address of the module
(SM1)
Supplied
automatically
LADDR_R INT Address of the configured
redundant SM2 module (only
when RED = 1)
Supplied
automatically

Siemens SIMATIC S7 F Specifications

General

Brand	Siemens
Model	SIMATIC S7 F
Category	Controller
Language	English