Modbus User Map; Real Time Clock - GE B30 UR Series Instruction Manual

5.2 PRODUCT SETUP

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
value of "0" in subsequent register
by "1". An address value of "0" in the initial register means "none" and values of "0" display for all registers. Different
values can be entered as required in any of the register positions.
ADDRESS
a) MAIN MENU
5

PATH: SETTINGS PRODUCT SETUP
 REAL TIME
 CLOCK
The relay contains a real time clock (RTC) to create timestamps for communications protocols as well as for historical data,
such as event records and oscillography. When the relay restarts, the RTC initializes from an onboard battery-backed
clock, which has the same accuracy as an electronic watch, approximately ±1 minute per month (~23 ppm). Once the RTC
is synchronized with the Precision Time Protocol (PTP), IRIG-B, or SNTP, its accuracy approaches that of the synchroniz-
ing time delivered to the relay.
The
SYNCHRONIZING SOURCE
able external time sources synchronizes the RTC and the synchrophasor clock. A setting of None causes the RTC and the
synchrophasor clock to free-run. A setting of PP/IRIGB/PTP/SNTP, IRIGB/PP/PTP/SNTP, or PP/PTP/IRIGB/SNTP causes
the relay to track the first source named that is enabled and operational, or free-run if none of these are available. Here, PP
means a time source that is strictly compliant with PP, PTP means a time source that is not strictly compliant with PP. When
a time source fails or recovers, the relay automatically transfers synchronization as required by this setting.
See the 
COMMANDS
The
REAL TIME CLOCK EVENTS
records the RTC time before the adjustment.
5-48


MODBUS USER MAP

ADDRESS
VALUE:
ADDRESS
MESSAGE
VALUE:
ADDRESS
MESSAGE
VALUE:
ADDRESS 256:
MESSAGE
VALUE:
line (converted from hex to decimal format). The corresponding value displays in the
lines automatically returns values for the previous
ADDRESS


REAL TIME CLOCK

SYNCRONIZING SOURCE:
None
REAL TIME CLOCK
MESSAGE
EVENTS: Disabled
IRIG-B SIGNAL TYPE:
MESSAGE
None
 PRECISION TIME
MESSAGE
 PROTOCOL (1588)
 SNTP PROTOCOL
MESSAGE

 LOCAL TIME
MESSAGE

setting configures the priority sequence that the relay uses to determine which of the avail-
menu section of this manual to manually set the RTC.
SET DATE AND TIME
setting allows changes to the date and/or time to be captured in the event record. The event
B30 Bus Differential System
Range: 0 to 65535 in steps of 1
1: 0
0
Range: 0 to 65535 in steps of 1
2: 0
0
Range: 0 to 65535 in steps of 1
3: 0
0
↓
Range: 0 to 65535 in steps of 1
0
0
Range: None, PP/IRIG-B/PTP/SNTP, IRIG-B/PP/PTP/
SNTP, PP/PTP/IRIG-B/SNTP
Range: Enabled, Disabled
Range: None, DC Shift, Amplitude Modulated
See below
See below
See below
5 SETTINGS
5.2.6 MODBUS USER MAP
line. A
VALUE
lines incremented
ADDRESS
5.2.7 REAL TIME CLOCK
GE Multilin