January 2012 7.9 Operating Times and System Times 1379
7.9.2 System time
System time management varies depending on the control system:
Single-processor systems internally operate with UNIX system time. This is
the number of seconds since 0:00 hours on January 1, 1970. The parameter
MP_offsetToUTC defines the time difference between Universal Time
(Greenwich time, UTC "Universal Time Coordinated") and local time. It is the
user's task to adjust between Daylight Saving Time and Standard Time.
Daylight Saving Time or Standard Time can be set in MP_offsetToUTC.
For dual-processor systems, the Windows operating system provides the
system time. Windows automatically adjusts for Daylight Saving Time or
Standard Time.
Use the following modules to transfer the system time:
Module 9195: Transfer the real-time clock (UNIX system time)
Module 9055: Convert time (binary) to formatted string
(and consider MP_offsetToUTC)
Single-processor systems: In MP_offsetToUTC, define the time
difference between Universal Time and local time, taking into account
Daylight Saving Time or Standard Time
Dual-processor systems: Set MP_offsetToUTC =0
MP_offsetToUTC
Time difference to universal time
Available from NCK software version: 597 110-01.
Format: Selection menu
Selection: Enter the time shift to UTC, e.g. UTC+1h for Central European
Time (CET)
UTC–10h, UTC–9h, UTC–8h,
UTC–7h, UTC–6h, UTC–5h,
UTC–4h 30min, UTC–4h,
UTC–3h, UTC–2h, UTC–1h,
UTC
UTC+1h, UTC+2h, UTC+3h,
UTC+4h, UTC+5h,
UTC+5h 30min,
UTC+6h, UTC+7h, UTC+8h,
UTC+9h, UTC+9h 30min,
UTC+10h, UTC+11h, UTC+12h
Default: 1
Access: LEVEL1
Reaction: RESET
Settings in the configuration editor MP number
System
CfgSystemTime
offsetToUTC 105201
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