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RCS20 M:N Redundancy Switch
Remote Operations
<1>
Control Mode
<1>
Software Revision
<1>
Number of Channels
<1>
Number of Status
Bytes Per Channel
*This number of bytes per channel might change with newer release numbers. It
is set to 3 up to release 3.9, and 5 bytes as of release 4.0.
**Remote M&C developers must make use of this value to find out how many
bytes per channel are being transmitted.
<1>
*Channel 0 Status
<1>
*Backed up
Modulator
<1>
*Backed up
Demodulator
<1>
*Module 0 Alarms 2
Status
<1>
*Module 0 Alarms 3
Status
These 3 bytes repeat for channels 1 - 9 (5 bytes as of release 4.0) 27 additional
bytes (45 additional bytes as of release 4.0)
Status Bytes
0 = Front Panel, 1 = Terminal Mode, 2 = Remote Port (Computer
RLLP)
Binary number, decimal point implied
10 decimal for RCS20
3 as of release 1.0, 5 as of release 4.0
Bit 0 = modulator failure flag (0 = no failure, 1 = failure)
Bit 1 = demodulator failure flag (0 = no failure, 1 = failure)
Bit 2 = switch communication in process (0 = no communication in
process, 1 = communication in process)
Bit 3 = modem communication fault (0 = no failure, 1 = failure)
Bit 4 = modulator present (0= not present, 1= present)
Bit 5 = demodulator present (0= not present, 1= present)
0 = This channel not a backup channel, or this channel is a backup
channel but currently not backing up a mod, 1-9 = This channel
currently backing up a mod, channel number as indicated.
0 = This channel not a backup channel, or this channel is a backup
channel but currently not backing up a demod, 1-9 = This channel
currently backing up a demod, channel number as indicated.)
Bit 0 = Mod learned (0 = Mod is not learned, 1 = Mod is learned)
Bit 1 = Demod learned (0 = Demod is not learned, 1 = Demod is
learned)
Bit 2 = Mod configuration changed (0 = Mod configuration has not
changed, 1 = Mod configuration is changed)
Bit 3 = Demod configuration changed (0 = Demod configuration has
not changed, 1 = Demod configuration is changed)
Bits 4 through 7 = Spares
Bits 0 and 1 = Mod backup 1 test status (0 = No Mod backup 1 test
performed, 1 = Mod backup 1 test pass, 2 = Mod backup 1 test fail)
Bits 2 and 3 = Demod backup 1 test status (0 = No Demod backup 1 test
performed, 1 = Demod backup 1 test pass, 2 = Demod backup 1
test fail)
Bits 4 and 5 = Mod backup 2 test status (0 = No Mod backup 2 test
performed, 1 = Mod backup 2 test pass, 2 = Mod backup 2 test fail)
Bits 6 and 7 = Demod backup 2 test status (0 = No Demod backup 2 test
performed, 1 = Demod backup 2 test pass, 2 = Demod backup 2
test fail)
A–18
Rev. 14
MN-RCS20
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