Siemens CP 1542SP-1, Руководство по эксплуатации

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Installation, wiring, commissioning
3.4 Commissioning the CP
CP 154xSP-1
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Operating Instructions, 12/2019, C79000-G8976-C426-05
Note
Time-of-day synchronization when using SINEMA RC
When the CP obtains the time from the CPU, set the CPU time manually during
commissioning when using SINEMA Remote Connect; see note in section Commissioning
the CP (Page 47).
Manual setting the time of day during commissioning
Note
Time-of-day synchronization when using Security / SINEMA RC
When using security functions, such as SINEMA Remote Connect, the CP needs the current
time for authentication on the partner or on the SINEMA RC Server.
The CP receives the time from the CPU or from an NTP server before the connection is
established for the first time.
Recommendation:
During commissioning, set the time of the CPU manually at least once using the STEP 7
online functions. This is necessary especially if you have configured the "Time from partner"
option for the time synchronization. In this way, you ensure that the CPU has a valid time of
day when the station starts up and that the CP can exchange the required certificates with
the partner or the SINEMA RC Server.