Siemens SIMATIC ET 200AL Manual - Página 38

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Cycle times

The figure below shows the cycle times at ET-Connection based on the number of I/O

modules with a Profinet send clock of 0.5ms.

Figure B-1

The cycle time at ET-Connection is synchronized with the PROFINET send clock. This

means that the input data of the I/O modules are transmitted via ET-Connection without

further delay (wait time in the interface module) via PROFINET. The output data from

PROFINET is also transmitted without further delay via ET-Connection to the I/O modules.

Thus, the cycle time of the ET-Connection, based on then number of I/O modules, is always

a multiple of the configured PROFINET send clock.

The chart shown above shows the trend for a send clock of 0.5 ms. With larger send clocks,

the gradation of the trend changes according to the send clock.

Interface module IM 157-1 PN (6ES7157-1AB00-0AB0)

Manual, 12/2016, A5E32347036-AD

Cycle times