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ABB 520ADD02 Connection And Settings Manual page 2

I/o adapter

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A D V I C E
Do not change the physical SPB I/O bus medium (electrical,
fiber optical) more than once within one RTU I/O bus config-
uration. Otherwise communication failures due to signal delay
effects can occur.
2 | 1KGT 150 872 V002 1 - I/O adapter 520ADD02
A D V I C E
To prevent unintended disconnection of the I/O bus connec-
tors end stops (e. g. BAM3 1SNK900001R0000) shall be
used at both ends of the I/O assembly.

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