Sel 2414 - Settings

G.5
Date Code 20130214 Instruction Manual SEL-2414 Transformer Monitor
MIRRORED BITS Communications
Overview
Use the CBADPU setting to determine the ratio of channel down time to the total
channel time before the meter element CBADA is asserted. The times used in the
calculation are those that are available in the COM records. See the COMMUNI-
CATIONS Command on page 7.9 for more information.
MIRRORED BITS Protocol for the Pulsar 9600 Baud Modem
To use a Pulsar MBT modem, set setting PROTO := MBTA or MBTB (Port set-
tings). Setting PROTO := MBTA or MBTB hides setting SPEED (forces the baud
to 9600), hides setting PARITY (forces parity to a value of 0), hides setting
RTSCTS (forces RTSCTS to a value of N), and forces the transmit time to be
faster than double the power system cycle. Table G.4 shows the difference in
message transmission periods when not using the Pulsar modem (PROTO ≠
MBTA or MBTB), and using the Pulsar MBT modem (PROTO = MBTA or
MBTB).
NOTE: You must consider the idle
time in calculations of data transfer
latency through a Pulsar MBT modem
system.
The device sets RTS to a negative voltage at the EIA-232 connector to signify
that M
IRRORED BITS communications matches this specification.
Settings
Set PROTO = MBA or MB8A to enable the MIRRORED BITS protocol channel A
on this port. Set PROTO = MBB or MB8B to enable the M
IRRORED BITS proto-
col channel B on this port. The standard M
IRRORED BITS protocols MBA and
MBB use a 6-data bit format for data encoding. The MB8 protocols MB8A and
MB8B use an 8-data bit format, which allows M
IRRORED BITS to operate on
communication channels requiring an 8-data bit format. For the remainder of this
section, PROTO = MBA is assumed. Table G.5 shows the M
IRRORED BITS proto-
col port settings, ranges, and default settings for Port F, Port 3, and Port 4.
Tab le G.4 M IRRORED BITS Communications Message Transmission Period
Baud PROTO ≠ MBTA or MBTB PROTO = MBTA or MBTB
38400 4 times a power system cycle n/a
19200 4 times a power system cycle n/a
9600 4 times a power system cycle 2 times a power system cycle
4800 7.5 ms n/a
Tab le G.5 MIRRORED BITS Protocol Settings (Sheet 1 of 2)
Setting
Prompt
Setting Description
Fac tory
Default
Setting
TXID MIRRORED BITS ID of This Device (1–4) 2
RXID M
IRRORED BITS ID of Device Receiving From (1–4) 1
RBADPU Outage Duration to Set RBAD (0–10000 seconds) 60
CBADPU Channel Unavailability to Set CBAD (1–10000 ppm) 1000
RXDFLT 8 char string of 1s, 0s, or Xs XXXXXXXX
RMB1PU RMB1 Pickup Debounce Messages (1–8 messages) 1
RMB1DO RMB1 Dropout Debounce Messages (1–8 messages) 1
RMB2PU RMB2 Pickup Debounce Messages (1–8 messages) 1
RMB2DO RMB2 Dropout Debounce Messages (1–8 messages) 1
RMB3PU RMB3 Pickup Debounce Messages (1–8 messages) 1
RMB3DO RMB3 Dropout Debounce Messages (1–8 messages) 1
RMB4PU RMB4 Pickup Debounce Messages (1–8 messages) 1
RMB4DO RMB4 Dropout Debounce Messages (1–8 messages) 1
RMB5PU RMB5 Pickup Debounce Messages (1–8 messages) 1
RMB5DO RMB5 Dropout Debounce Messages (1–8 messages) 1