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Real Time Clock - GE C30 Instruction Manual

Controller system ur series.
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Table of Contents
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Table of Contents
5 SETTINGS
The Modbus user map provides read-only access for up to 256 registers. To obtain a memory map value, enter the desired
address in the
line (this value must be converted from hex to decimal format). The corresponding value is dis-
ADDRESS
played in the
line. A value of "0" in subsequent register
VALUE
lines incremented by "1". An address value of "0" in the initial register means "none" and values of "0" will be dis-
ADDRESS
played for all registers. Different
PATH: SETTINGS
PRODUCT SETUP
 REAL TIME
 CLOCK
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
MESSAGE
The date and time can be synchronized a known time base and to other relays using an IRIG-B signal. It has the same
accuracy as an electronic watch, approximately ±1 minute per month. If an IRIG-B signal is connected to the relay, only the
current year needs to be entered. See the
The
REAL TIME CLOCK EVENTS
The
LOCAL TIME OFFSET FROM UTC
(Greenwich Mean Time) in hours. This setting has two uses. When the C30 is time synchronized with IRIG-B, or has no
permanent time synchronization, the offset is used to calculate UTC time for IEC 61850 features. When the C30 is time
synchronized with SNTP, the offset is used to determine the local time for the C30 clock, since SNTP provides UTC time.
The daylight savings time (DST) settings can be used to allow the C30 clock can follow the DST rules of the local time
zone. Note that when IRIG-B time synchronization is active, the DST settings are ignored. The DST settings are used when
the C30 is synchronized with SNTP, or when neither SNTP nor IRIG-B is used.
Only timestamps in the event recorder and communications protocols are affected by the daylight savings time set-
tings. The reported real-time clock value does not change.
NOTE
GE Multilin
values can be entered as required in any of the register positions.
ADDRESS


REAL TIME CLOCK

IRIG-B SIGNAL TYPE:
None
REAL TIME CLOCK
EVENTS: Disabled
LOCAL TIME OFFSET
FROM UTC:
0.0 hr
DAYLIGHT SAVINGS
TIME: Disabled
DST START MONTH:
April
DST START DAY:
Sunday
DST START DAY
INSTANCE: First
DST START HOUR:
2:00
DST STOP MONTH:
January
DST STOP DAY:
Sunday
DST STOP DAY
INSTANCE: First
DST STOP HOUR:
2:00

COMMANDS
SET DATE AND TIME
setting allows changes to the date and/or time to be captured in the event record.
setting is used to specify the local time zone offset from Universal Coordinated Time
C30 Controller System
lines automatically returns values for the previous
ADDRESS
Range: None, DC Shift, Amplitude Modulated
Range: Disabled, Enabled
Range: –24.0 to 24.0 hrs in steps of 0.5
Range: Disabled, Enabled
Range: January to December (all months)
Range: Sunday to Saturday (all days of the week)
Range: First, Second, Third, Fourth, Last
Range: 0:00 to 23:00
Range: January to December (all months)
Range: Sunday to Saturday (all days of the week)
Range: First, Second, Third, Fourth, Last
Range: 0:00 to 23:00
menu to manually set the relay clock.
5.2 PRODUCT SETUP
5.2.6 REAL TIME CLOCK
5-35
5

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