Supplementary information 
  18.4 Configuring with STEP 7 
CPU 410 Process Automation/CPU 410 SMART 
System Manual, 05/2017, A5E31622160-AC 
305 
Recommended setting (default setting of the CPU 410): 600 corresponds to 60 s. 
 
-tolerant-specific CPU parameters, and thus also the monitoring times, are 
calculated automatically. The work memory allocation of all data blocks is based on a CPU
-
specific default value. If your fault
-tolerant system does not link up, check the data memory 
(HW Config > CPU Properties > H Parameters > Work memory used for all data 
 
Service & Support (http://www.siemens.com/automation/service&support) 
 
The fault-tolerant S7 connection is a separate connection type of the "Configure Networks" 
application. It permits that the following communication peers can communicate with each 
other:  
●  S7–400 fault-tolerant station (with 2 fault-tolerant CPUs)->S7–400 fault-tolerant station 
(with 2 fault-tolerant CPUs) 
●  S7–400 station (with 1 fault-tolerant CPU)->S7–400 fault-tolerant station (with 2 fault-
tolerant CPUs) 
●  S7–400 station (with 1 fault-tolerant CPU)->S7–400 station (with 1 fault-tolerant CPU) 
●  SIMATIC PC stations > S7–400 fault-tolerant station (with 2 fault-tolerant CPUs)