Siemens SIMATIC S7 F, Manual

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Fail-Safe Blocks
Fail-Safe Systems
A5E00085588-03
8-141
8.16 Run Times
8.16.1 Run Times of the Fail-Safe Blocks
The Principle of Run-Time Measurement
In order to obtain practical run times, all the fail-safe blocks were measured with a
dynamic circuit. In other words, the stored input variables of the blocks were
changed (dynamically) during measurement.
The run times in the table below are maximum values.
5XQ7LPHVRIWKH)DLO6DIH%ORFNVLQ V
Block
Name
Block
Number
Function Maximum Run
Time with
Dynamically
Connected Inputs
in
V
Driver Blocks
F_M_AI6 FB 383 F module driver for 6-channel analog input
•
One CPU/one F-I/O
•
Redundant CPU/one F-I/O
•
One CPU/redundant F-I/O
•
Redundant CPU/redundant F-I/O
465
520
740
814
F_M_DI8 FB 384 F module driver for 8-channel digital input
•
One CPU/one F-I/O
•
Redundant CPU/redundant F-I/O
•
One CPU/redundant F-I/O
•
Redundant CPU/redundant F-I/O
518
570
1046
1155
F_M_DI24 FB 385 F module driver for 24-channel digital input
•
One CPU/one F-I/O
•
Redundant CPU/one F-I/O
•
One CPU/redundant F-I/O
•
Redundant CPU/redundant F-I/O
789
847
1727
1830
F_M_DO8 FB 388 F module driver for 8-channel digital output
•
One CPU/one F-I/O
•
Redundant CPU/redundant F-I/O
488
542
F_M_DO10 FB 386 F module driver for 10-channel digital output
•
One CPU/one F-I/O
•
Redundant CPU/one F-I/O
•
One CPU/redundant F-I/O
•
Redundant CPU/redundant F-I/O
519
570
1210
1598
F_CH_DI FB 377
•
F channel driver for digital input 51