A.2.3 Comparison Of System Configurations With Standard And Fault-Tolerant Communications - Siemens SIMATIC S7-400H Manual

Characteristic Values of Redundant Programmable Logic Controllers
A.2.3 Comparison of System Configurations With Standard and
Fault-Tolerant Communications
The following section shows a comparison between standard and fault-tolerant
communications for a configuration consisting of a fault-tolerant system, a
fault-tolerant CPU 417-4 H and a single-channel OS.
By comparison, only the communication components CP and cable were taken into
account.
Systems having standard and fault-tolerant communications
Standard communications
Single-user OS
Fault-tolerant communications
Single-user OS
A-8
S7-400H system
S7-400H system
S7-400H Programmable Controller Fault-Tolerant Systems
S7-400 with
CPU 417-4H
S7-400 with
CPU 417-4H
Baseline
1
Factor
83
A5E00068197-04