GE L60, Инструкция по эксплуатации, Страница: 114 / 498

5-22 L60 Line Phase Comparison Relay GE Multilin
5.2 PRODUCT SETUP 5 SETTINGS
5
If SNTP functionality is enabled at the same time as IRIG-B, the IRIG-B signal provides the time value to the L60 clock for
as long as a valid signal is present. If the IRIG-B signal is removed, the time obtained from the SNTP server is used. If
either SNTP or IRIG-B is enabled, the L60 clock value cannot be changed using the front panel keypad.
To use SNTP in unicast mode,
SNTP SERVER IP ADDR
must be set to the SNTP/NTP server IP address. Once this address is
set and
SNTP FUNCTION
is “Enabled”, the L60 attempts to obtain time values from the SNTP/NTP server. Since many time
values are obtained and averaged, it generally takes three to four minutes until the L60 clock is closely synchronized with
the SNTP/NTP server. It may take up to two minutes for the L60 to signal an SNTP self-test error if the server is offline.
To use SNTP in broadcast mode, set the
SNTP SERVER IP ADDR
setting to “0.0.0.0” and
SNTP FUNCTION
to “Enabled”. The
L60 then listens to SNTP messages sent to the “all ones” broadcast address for the subnet. The L60 waits up to eighteen
minutes (>1024 seconds) without receiving an SNTP broadcast message before signaling an SNTP self-test error.
The UR-series relays do not support the multicast or anycast SNTP functionality.
5.2.5 MODBUS USER MAP
PATH: SETTINGS PRODUCT SETUP MODBUS USER MAP
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
ADDRESS
line (this value must be converted from hex to decimal format). The corresponding value is dis-
played in the
VALUE
line. A value of “0” in subsequent register
ADDRESS
lines automatically returns values for the previous
ADDRESS
lines incremented by “1”. An address value of “0” in the initial register means “none” and values of “0” will be dis-
played for all registers. Different
ADDRESS
values can be entered as required in any of the register positions.
5.2.6 REAL TIME CLOCK
PATH: SETTINGS PRODUCT SETUP REAL TIME CLOCK
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
COMMANDS SET DATE AND TIME
menu to manually set the relay clock.
The
REAL TIME CLOCK EVENTS
setting allows changes to the date and/or time to be captured in the event record.
MODBUS USER MAP ADDRESS 1: 0
VALUE: 0
Range: 0 to 65535 in steps of 1
↓
MESSAGE
ADDRESS 256: 0
VALUE: 0
Range: 0 to 65535 in steps of 1
REAL TIME
CLOCK
IRIG-B SIGNAL TYPE:
None
Range: None, DC Shift, Amplitude Modulated
MESSAGE
REAL TIME CLOCK
EVENTS: Disabled
Range: Disabled, Enabled