The relay supports the following high accuracy time
synchronization method with a time-stamping res-
olution of 4
μ
s required especially in process bus
applications.
• PTP (IEEE 1588) v2 with Power Profile
The IEEE 1588 support is included in all variants
having a redundant Ethernet communication mod-
ule.
IEEE 1588 v2 features
• Ordinary Clock with Best Master Clock algorithm
• One-step Transparent Clock for Ethernet ring to-
pology
• 1588 v2 Power Profile
•
Receive (slave): 1-step/2-step
• Transmit (master): 1-step
• Layer 2 mapping
• Peer to peer delay calculation
• Multicast operation
Required accuracy of grandmaster clock is +/-1
μ
s.
The relay can work as a master clock per BMC algo-
rithm if the external grandmaster clock is not avail-
able for short term.
The IEEE 1588 support is included in all variants
having a redundant Ethernet communication mod-
ule.
In addition, the relay supports time synchroniza-
tion via Modbus, and DNP3 serial communication
protocols.
34
R E F61 5 A N S I 5.0 FP1
FEED ER P R OT EC T I O N A N D CO N T R O L
Interfaces/protocols
Ethernet
Serial
100BASE-TX RJ-45
100BASE-FX LC
RS-232/RS-485
Fiber optic ST
IEC 61850-8-1
•
•
—
—
IEC 61850-9-2 LE
•
•
—
—
MODBUS RTU/ASCII
—
—
•
•
MODBUS TCP/IP
•
•
—
—
DNP3 (serial)
—
—
•
•
DNP3 TCP/IP
•
•
—
—
—
Table 5. Supported station communication interfaces and protocols
• = Supported