Time Synchronization And Time Stamping With Redundant Cpu - Siemens SIMATIC ET 200SP HA System Manual

Plant planning
4.9 Time synchronization and time stamping
4.9.4

Time synchronization and time stamping with redundant CPU

Example configurations
3
Time master
Automation system
Plant bus
Configurations
③④⑤
56
4
A SICLOCK with SIMATIC time-of-day synchronization.
IO controller in 1oo2 mode (2x CPU 410‑5H)
1 PN/IO subnet on an internal PN/IO interface of the IO controller (e.g. CPU 410-5H: X5 connection)
Note:
The configurations are not suitable for time stamping with an accuracy of 1 ms. You can find
additional information on the required configuration changes in section "Plant-wide time synchro‐
nization and time stamping with a precision of 1 ms (Page 52)". For complete information, see the
SIMATIC; ET 200SP HA; Time Stamping with ET 200SP HA.
function manual
5
ET 200SP HA Distributed I/O system
System Manual, 08/2019, A5E39261167-AD