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Provisions for IO redundancy
• With a redundant configuration, you need to ensure that not only one I/O module is
• When plugging a I/O module in a redundant configuration, you must ensure that you use
• The correct function of the diodes located in the terminal block and required for redundancy
(FAIW-013)
Configuration:
• Assign the redundancy parameters for the I/O module.
• Settings that you make on a I/O module always apply to the module pair, with the exception
of the F-destination address.
Response to failure
In the event of a channel failure in the redundant I/O modules or one of the two I/O modules, the
following applies:
• Error-free inputs remain available in the system.
F-AI 8xI 2-/4-wire HART HA
Equipment Manual, 09/2021, A5E50557845-AA
WARNING
permanently operated on the terminal block.
identical module types.
switchover must be ensured at regular intervals. This can be achieved, for example, by the
discrepancy evaluation of the fail-safe channel driver from F-systems.
You can find more information on discrepancy analysis in the description of the channel
driver in the "SIMATIC Industrial Software S7 F/FH Systems - Configuring and Programming
(https://support.industry.siemens.com/cs/ww/en/view/109773062)" Programming and
Operating Manual.
Applications of the F-I/O module
6.10 IO redundancy
59
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