Redundant CPUs with redundant I/O
Redundant one-sided I/O
2
fiber-optic cables
ET 200M
Redundant switched I/O
2
fiber-optic cables
S7-400H Programmable Controller Fault-Tolerant Systems
A5E00068197-04
Characteristic Values of Redundant Programmable Logic Controllers
ET 200M
Active
backplane bus
Factor
65
Factor
70
A-7