Settings P54x/EN ST/La4
MiCOM P543, P544, P545, P546
(ST) 4-7
ST
Each setting below that refers to Channel 2 is associated with the communications setting of
the second communications channel (where fitted) and is visible only when 3 Terminal or
D rotection c tion is set.
mmands.
These a ced as Channel 1 a ave a
subtly different meaning and shou d with
InterMiCOM nd output mappi has to be done in the Pro e Logic
(
ual redundant telep onfigura
Note: InterMiCOM64 provides 2 groups of 8 InterMiCOM64 co
re referen nd Channel 2. They h
ld not be confuse
communications channels 1 and 2.
64
input a
PSL).
ng grammable Schem
Setting range
Menu text Def ing
Min. Max.
ep size ault sett St
PROT COMMS/IM64
Scheme Setup 2 Terminal 2 Terminal, Dual Re nal dundant, or 3 Termi
Settings to determine how many relay ends are connected in the differential zone or how
e connected to the teleprotection scheme for th r
ble.
mplement redundancy (i.e. employ a parallel “hot-standby” path).
many relays ar
three ends possi
e protected line, with two o
For a plain two terminal line, there is an additional option to use dual communication
channels, to i
Address 0-0 0-0, 1-A…20-A, 1-B….20-B
Setting for the unique relay address that is encoded in the Differential message
InterMiCOM
64
sent message. The aim of setting the address is to establish pairs of relays
which will only communicate with each other. Should an inadvertent fiber/MUX misrouting
or spurious loopback occur, an error will be logged, and the erroneous received d
be rejected.
As an example, in a 2 end
and in the
ata will
ed scheme the following address setting would be correct:
1-A
address, whereby any relay will be free to communicate with
disabling of the unique addressing). When PROT COMMS/IM64
is set to loop back mode, the address 0-0 will replace any existing address in the relay.
Local relay:
Remote relay: 1-B
Address 0-0 is a universal
any other (equivalent to
Address 0-0 0-0, 1-A…20-A, 1-B….20-B, 1-C…20-C
In 3 terminal schemes, communicating groups of three relays may be configured.
Comm Mode Standard Standard or IEEE C37.94
Setting that defines the data format that will be transmitted on the fiber outputs from the
relay.
If the Multiplexer accepts direct fiber inputs according to IEEE C37.94, the ‘IEEE C37.94’
setting is selected.
For a direct fiber link between relays, and w
(G.703 or V.35 or X.21), the ‘Standard’ mes
here the MUX connection is in electrical format
sage format needs to be set.
For a setting change to take effect, rebooting of the relay will be required. The Comm
Mode setting applies to both channels.
Baud Rate Ch 1 64kbits/s 56kbits/s or 64kbits/s
Channel 1 data rate setting for signaling between ends. The setting will depend on the
MUX electrical interface, set 64kbit/s for G.703 and X.21, or generally 56kbit/s for V.35.
For direct fiber connection between relays, 64kbit/s will offer slightly faster data
transmission.
The setting is invisible when IEEE C37.94 Comm Mode is selected.
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