Communication Monitoring Time For F Cpu/F Signal Modules - Siemens SIMATIC PCS 7 Operating Manual

Configuring the safety program
7.11 Monitoring times and system response times
7.11.3

Communication monitoring time for F CPU/F signal modules

Time monitoring of PROFIsafe or PROFINET communication is implemented in the F -signal
modules and in the F-CPU using F-module drivers.
The value is entered while assigning parameters for the F-signal modules in HW Config
("F_monitoring time" parameter) and applied automatically when the F-module drivers are
generated.
To prevent either monitoring in the F-module driver or monitoring in the F-signal module from
being triggered when no errors are present, the F-monitoring time T
sufficiently high value.
You can determine the shortest possible F-monitoring time using S7tftimea.xlsm.
Depending on the hardware configuration in question, S7ftimea.xlsm distinguishes between
7 different options:
● Variant 1:
Singular system with F-signal modules in PROFIBUS DP or PROFINET IO slaves
● Variant 2:
Redundant system with F-signal modules in a switched (ET 200M) PROFIBUS DP slave
or PROFINET IO slaves
● Variant 3:
Singular system with F-PA devices on a PROFIBUS DP/PA coupler
● Variant 4:
Singular system with F-PA devices on a PROFIBUS DP/PA link
● Variant 5:
Redundant system with F-PA devices on a switched PROFIBUS DP/PA link
● Variant 6:
Redundant system with F-DP devices on a switched PROFIBUS Y link
● Version 7:
Single or redundant system with F-DP devices on an IE/PB link PCS 7 does not support
the variant.
140
must be set to a
PSTO
Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB