CHAPTER 5: SETTINGS PRODUCT SETUPC60 BREAKER PROTECTION SYSTEM – INSTRUCTION MANUAL 5-955these are available. Here, PP means a time source that is strictly compliant with PP, PTP means a time source that is notstrictly compliant with PP, and Other means any less precise source (SNTP, IEC 103, IEC 104, Modbus, or DNP). When a timesource fails or recovers, the relay automatically transfers synchronization as required by this setting.When the relay does not have the IEEE 1588 software option and this setting does not display, it uses IRIG-B when enabledand operational, then failing that SNTP when configured and operational, and otherwise it free-runs unless the clock ischanged from the front panel or from communications protocols.Setup for IRIG-B is illustrated in the Installation chapter.For the Other protocols, whenever a time synchronization message is received through any of the active protocols, the C60clock updates. However, given that IEC 60870-5-103, IEC 60870-5-104, Modbus, and DNP are low-accuracy timesynchronization methods, avoid their use for synchronization when better accuracy time protocols, such as IRIG-B and PTP,are active in the system. If IRIG-B or PTP is used to update the relay clock, the other protocols (such as SNTP) are notallowed to update, even if active.See the COMMANDS SET DATE AND TIME menu section of this manual to manually set the RTC.The REAL TIME CLOCK EVENTS setting allows changes to the date and/or time to be captured in the event record. The eventrecords the RTC time before the adjustment. A Date/Time Changed event is generated when:• The real time clock changed from SNTP/PTP/IRIG-B and the time difference is more than one second• The real time clock changed from the front panel or via Modbus register. The relay always generates this eventregardless of the time difference.• The Daylight Saving Time (DST) setting gets enabled and the current relay time is already in the DST zone• The real time clock enters or leaves DSTTo enable IRIG-B synchronization, the input IRIG-B SIGNAL TYPE must be set to DC Shift or Amplitude Modulated. IRIG-Bsynchronization can be disabled by making this setting None.To configure and enable PTP and/or SNTP, or to set local time parameters (for example time zone, daylight savings), use thefollowing sections.5.3.6.2 Precision time protocol (1588)SETTINGS PRODUCT SETUP REAL TIME CLOCK PRECISION TIME PROTOCOL (1588)SETTINGS PRODUCT SETUP REAL TIME CLOCK PRECISION TIME PROTOCOL (1588) PTP PORT 1(3) PRECISION TIME PROTOCOL (1588) STRICT POWERPROFILE: DisabledRange: Enabled, Disabled PTP DOMAIN NUMBER:0Range: 0 to 255 PTP VLAN PRIORITY:4Range: 0 to 7 PTP VLAN ID:0Range: 0 to 4095 PTP PORT 1See below PTP PORT 1 PORT 1 PTP FUNCTION:DisabledRange: Enabled, Disabled PORT 1 PATH DELAYADDER: 0 nsRange: 0 to 60000 ns in steps of 1 PORT 1 PATH DELAYASYMMETRY: 0 nsRange: –1000 to +1000 ns in steps of 1The C60 is provided with optional Precision Time Protocol capability. This feature is specified as the IEEE 1588software option at the time of ordering. See the Order Codes section in chapter 2 for details.
