GE 845 Instruction Manual page 133

CHAPTER 4: SETPOINTS
NOTE:
NOTE:
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
NETWORK 1, 4, 5, PRT1(4,5) IP ADDRESS
Range: Standard IPV4 Address format
Default: 169.254.3.3 (Port 1)
Default: 0.0.0.0 (Port 4, 5)
The setting sets the port's IPV4 address in standard IPV4 format.
The setting is valid on port 1 if the optional communications card is not present.
The setting is valid on port 5 if port 4's OPERATION is set to INDEPENDENT.
PRT1(4,5) SUBNET IP MASK
Range: Standard IPV4 mask format
Default: 255.255.255.0
This setting specifies the IPv4 mask associated with the corresponding port IP address.
PRT1 GWY ADDRESS
This setting sets the ports IPv4 GATEWAY address in standard IPv4 format.
This setting is only valid on port 1.
This setting is not present on port 4 and 5, which are available on the communications
card.
The communications card comes with the capability of setting a number of static routes
and one default route, which is used instead of default gateways.
Notes:
• The fiber optic ports support only 100 Mbps.
• Changes to the Ethernet communications settings take effect only after rebooting the
relay.
• All Ethernet ports have flex operands associated with them. A failure of one of the
Ethernet ports will trigger an event, a target message and the corresponding operand
set.
• When using more than one Ethernet port, each port must be configured to belong to a
different network, else communications becomes unpredictable
PRT4 OPERATION
Range: Independent, LLA, PRP
Default: Independent
This setting determines the mode of operation for ports 4 and 5: INDEPENDENT, LLA or
PRP.
INDEPENDENT operation: ports 4 and 5 operate independently with their own MAC and
IP address.
LLA operation: the operation of ports 4 and 5 are as follows:
Ports 4 and 5 use port 4's MAC and IP address settings while port 5 is in standby mode in
that it does not actively communicate on the Ethernet network but monitors its link. If
Port 4 is active and the link loss problem is detected, communications is switched to Port
5 immediately. Port 5 is, in effect, acting as a redundant or backup link to the network for
port 4.
LLA (Link Loss Alert) is a proprietary feature supported by the 8 Series relay fiber optic
ports. When enabled on an 8 Series fiber optic port, this feature is able to detect a failure
of the fiber link. If port 4's OPERATION is set to LLA, the detection of a link failure by this
DEVICE
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