Communication Protocols - GE L30 Instruction Manual

Ur series line current differential system
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2 PRODUCT DESCRIPTION
RS232
Front port:
19.2 kbps, Modbus RTU
RS485
1 rear port:
Up to 115 kbps, Modbus RTU, DNP 3
Typical distance:
1200 m
Isolation:
2 kV, isolated together at 36 Vpk
ETHERNET (FIBER)
PARAMETER
FIBER TYPE
100MB MULTI-
MODE
Wavelength
1310 nm
Connector
LC
Transmit power
–20 dBm
Receiver sensitivity
–30 dBm
Power budget
10 dB
Maximum input
–14 dBm
power
Typical distance
2 km
Duplex
full/half
Redundancy
yes
ETHERNET (10/100 MB TWISTED PAIR)
Modes:
10 MB, 10/100 MB (auto-detect)
Connector:
RJ45
SIMPLE NETWORK TIME PROTOCOL (SNTP)
clock synchronization error: <10 ms (typical)
SHIELDED TWISTED-PAIR INTERFACE OPTIONS
INTERFACE TYPE
TYPICAL DISTANCE
RS422
1200 m
G.703
100 m
RS422 distance is based on transmitter power and
does not take into consideration the clock source
NOTE
provided by the user.
LINK POWER BUDGET
EMITTER,
TRANSMIT
FIBER TYPE
POWER
820 nm LED,
–20 dBm
Multimode
1300 nm LED,
–21 dBm
Multimode
1300 nm ELED,
–23 dBm
Singlemode
1300 nm Laser,
–1 dBm
Singlemode
1550 nm Laser,
+5 dBm
Singlemode
These power budgets are calculated from the manu-
facturer's worst-case transmitter power and worst
NOTE
case receiver sensitivity.
GE Multilin
RECEIVED
POWER
SENSITIVITY
BUDGET
–30 dBm
10 dB
–30 dBm
9 dB
–32 dBm
9 dB
–30 dBm
29 dB
–30 dBm
35 dB
L30 Line Current Differential System

2.4.8 COMMUNICATION PROTOCOLS

PRECISION TIME PROTOCOL (PTP)
PTP IEEE Std 1588 2008 (version 2)
Power Profile (PP) per IEEE Standard PC37.238TM2011
Slave-only ordinary clock
Peer delay measurement mechanism
PARALLEL REDUNDANCY PROTOCOL (PRP)
(IEC 62439-3 CLAUSE 4, 2012)
Ethernet ports used:
2 and 3
Networks supported:
10/100 MB Ethernet
OTHER
TFTP, HTTP, IEC 60870-5-104, Ethernet Global Data (EGD)
2.4.9 INTER-RELAY COMMUNICATIONS
The power budgets for the 1300 nm ELED are calcu-
lated from the manufacturer's transmitter power and
NOTE
receiver sensitivity at ambient temperature. At
extreme temperatures these values deviate based
on component tolerance. On average, the output
power decreases as the temperature is increased by
a factor 1dB / 5°C.
MAXIMUM OPTICAL INPUT POWER
EMITTER, FIBER TYPE
820 nm LED, Multimode
1300 nm LED, Multimode
1300 nm ELED, Singlemode
1300 nm Laser, Singlemode
1550 nm Laser, Singlemode
2.4 SPECIFICATIONS
MAX. OPTICAL
INPUT POWER
–7.6 dBm
–11 dBm
–14 dBm
–14 dBm
–14 dBm
2-29
2

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