
S800 I/O Configuration - Basic Rules and Examples Section 3 Configuration
42 3BSE056248
Long distance distribution in star as Direct I/O to AC 800M
Calculation of the ModuleBus delay for the configuration in the figure above:
ModuleBus delay = (total delay in optical fiber) + 5 x (opto-to-opto delay in TB820) + 2 x
(delay in TB825) + (opto-to electrical delay in TB820) = (4 x 15 + 3 x 1.5 + 1000) x 0.01 +
5 x 4 + 2 x 2.4 + 6.5 = 42 s.
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