Installing the S7-400
2-4
S7-400 and M7-400 Programmable Controllers, Installation Manual
C79000-G7076-C424-01
Ways of Connecting Central and Expansion Racks
Central rack CR
Expansion rack ER 1 Expansion rack ER 4
Expansion rack ER 1
Expansion rack ER 1
Expansion rack ER 4
Expansion without 5 V transfer, local
Expansion with 5 V transfer, local
Remote expansion
IM 460-0
IM 460-1
IM 460-3
Chain length 3 m max.
Chain length 102.25 m max.
Chain length 1.5 m max.
IM 461-0 IM 461-0
IM 461-1
IM 461-3
IM 461-3
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