CHAPTER 6: ACTUAL VALUES STATUS
T35 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL 6-11
6
6.3.20 Parallel Redundancy Protocol (PRP)
The Parallel Redundancy Protocol (PRP) defines a redundancy protocol for high availability in substation automation
networks.
ACTUAL VALUES STATUS PRP STATUS
Total Received Port A is a counter for total messages received (either from DANPs or from SANs) on Port A.
Total Received Port B is a counter for total messages received (either from DANPs or from SANs) on Port B.
Total Errors is a counter for total messages received with an error (bad port code, frame length too short).
Mismatches Port A is a counter for total messages received with an error on Port A (PRP frame, but port received through
and LAN ID in the frame do not match).
Mismatches Port B is a counter for total messages received with an error on Port B (PRP frame, but port received through
and LAN ID in the frame do not match).
6.3.21 TxGOOSE status
ACTUAL VALUES STATUS TxGOOSE STATUS
This status is relevant to R-GOOSE reception when configured for SSM or ASM reception modes. It is not relevant for GOOSE
or for R-GOOSE in unicast reception mode.
ARP — The unicast mode of R-GOOSE transmission requires Address Resolution Protocol (ARP) for the resolution of the
network layer address into the MAC layer address. R-TxGOOSE## ARP status On indicates that ARP responses are being
received and the destination MAC address for R-GOOSE transmissions has been obtained. This status remains Off if
TxGOOSE## is not configured for R-GOOSE. It also remains Off if setting R-TxGOOSE1 DST IP is set to a multicast address. In
the case where setting R-TxGOOSE1 DST IP is configured with a unicast address and this status indicates Off, TxGOOSE##
transmission will be off, and therefore communication network diagnosis needs to be carried out.
PRP STATUS
Total Rx Port A:
0
Range: 0 to 4G, blank if PRP disabled
Total Rx Port B:
0
Range: 0 to 4G, blank if PRP disabled
Mismatches Port A:
0
Range: 0 to 4G, blank if PRP disabled
Mismatches Port B:
0
Range: 0 to 4G, blank if PRP disabled
Total Errors:
0
Range: 0 to 4G, blank if PRP disabled
The T35 is provided with optional PRP capability. This feature is specified as a software option at the time of
ordering. See the Order Codes section in chapter 2 for details.
TxGOOSE STATUS
R-TxGOOSE 1
ARP: Off
Range: On, Off
R-TxGOOSE 16
ARP: Off
Range: On, Off
The T35 is provided with optional IEC 61850 capability. This feature is specified as a software option at the time
of ordering. See the Order Codes section of chapter 2 for details.
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