S1 745 Setup745
Transformer Management Relay
Setpoints
http://www.GEindustrial.com/multilin
5–26
GE Multilin
changed via the communication ports. If the four wire RS422 hardware
configuration is required, select RS422.
• FRONT BAUD RATE / FRONT PARITY: Select the baud rate / parity for the
front panel port. These setpoints cannot be changed via communication ports.
c) DNP Communications
PATH: SETPOINTS ! S1 745 SETUP !" COMMUNICATIONS !" DNP
• DNP PORT: Selects the communication port for DNP communications.
• DNP POINT MAPPING: When enabled, the 120 User Map Values are included
in the DNP Object 30 point list. For additional information, refer to GE
publication GEK-106636: 745 Communications Guide.
• TRANSMISSION DELAY: Select the minimum time from when a DNP request
is received and a response issued. A value of zero causes the response to be
issued as quickly as possible.
• DATA LINK CONFIRM MODE: Select the data link confirmation mode for
responses sent by the 745. When Sometimes is selected, data link confirmation
is only requested when the response contains more than one frame.
• DATA LINK CONFIRM TIMEOUT: Selects a desired timeout. If no
confirmation response is received within this time, the 745 will re-send the
frame if retries are still available.
• DATA LINK CONFIRM RETRIES: Select the maximum number of retries that
will be issued for a given data link frame.
• SELECT/OPERATE ARM TIMEOUT: Select the duration of the select / operate
arm timer.
• WRITE TIME INTERVAL: Select the time that must elapse before the 745 will
set the ‘need time’ internal indication (IIN). After the time is written by a DNP
master, the IIN will be set again after this time elapses. A value of zero disables
this feature.
• COLD RESTART INHIBIT: When disabled, a cold restart request from a DNP
master will cause the 745 to be reset. Enabling this setpoint will cause the cold
restart request to initialize only the DNP sub-module.
When “Disabled” is selected, a cold restart request will cause loss of
protection until the 745 reset completes.
! DNP [!] DNP PORT:
None
Range: None, COM1, COM2, Front
MESSAGE
DNP POINT MAPPING:
Enabled
Range: Enabled, Disabled
MESSAGE
TRANSMISSION DELAY:
0 ms
Range: 0 to 65000 ms in steps of 1
MESSAGE
DATA LINK CONFIRM
MODE: Never
Range: Never, Always, Sometimes
MESSAGE
DATA LINK CONFIRM
TIMEOUT: 1000 ms
Range: 1 to 65000 ms in steps of 1
MESSAGE
DATA LINK CONFIRM
RETRIES: 3
Range: 0 to 100 in steps of 1
MESSAGE
SELECT/OPERATE ARM
TIMEOUT: 10000 ms
Range: 1 to 65000 ms in steps of 1
MESSAGE
WRITE TIME INTERVAL:
0 ms
Range: 0 to 65000 ms in steps of 1
MESSAGE
COLD RESTART
INHIBIT: Disabled
Range: Enabled, Disabled
WARNING
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