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FLEX STATE
Flex State
Communications
GOOSE Rx and Tx
5–4
Path:
Status > Flex States
Status\Flex States
Item Name
Parameter 1
Parameter 2
Parameter 3
Parameter 256
FlexStates
There are 256 Flex state bits available. The status value indicates the state of the given Flex
state bit.
The 845 supports 3 GOOSE transmissions and 8 GOOSE receptions each with 64 items per
transmission or reception. Non-structured GOOSE is supported. Each item within the
GOOSE message can be a digital or analog value. Messages are launched within one scan
of a digital point status change or an analog exceeding its deadband. The 845 supports a
total of remote digital outputs.
The 845 server supports a subset of the server features described in part 7.2 of the
IEC61850 standard.
GOOSE MESSAGING
As indicated above, the 845 supports 3 GOOSE transmissions and eight GOOSE receptions
as shown in the table below:
Service
Launch
Support for
Speed*
Programmable
time to live
Configurab
Within 2 ms
Time to live
le GOOSE
(1 CPU
programmable
scan)*
from 1000 to
60000 ms
* Launch speed is measured by comparing the time stamp in SOE of digital remote output
status change to the time stamp of message seen on the network by a computer who's
clock is synchronized by an IRIG-B card to the same IRIG-B source as the 845 relay.
REMOTE INPUTS
Value
Off
Off
Off
Off
# of Tx
# of Rx
Test Bit
Support
3
8
Y
Devices
845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: STATUS
Unit
Number of
Number of
items in
remote
each
inputs per
transmissi
relay
on or
reception
64 Data
32
Items per
Data Set
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