
Appendix C S-Registers
Man_455U-D Rev 3.04 Page 83
S25 0-255 System Address –
Low Byte
The 16-bit system address uniquely identifies the
radio network
S26 0-255 Lead-In Tone Time This selects the Lead-In tone period – units 4 msec.
The default (10) should not normally be changed.
S27 0-255 Transmitter Hold-Up
Time
Selects How long the transmitter will stay on waiting
for more data before starting to send the tail (msec)
S28 0-255 Transmitter Tail
Time
Selects how long the transmitter will send a “Tail” at
the end of transmission. New data is ignored during
the tail time
S29 0-255 Unack Retries How many times to ret-transmit each message in
unacknowledged mode. Each message is transmitted
this number of times. The sequence number and
source address ensure that repeat messages are
ignored by the receiver.
S30 0-255 Ackmode retries Number of times to re-try in acknowledged mode if
no Acknowledge response is received.
S31 0-255 Radio Flags This read-Only register indicates radio Tx error flags
1 => Over-temperature Shutdown
2 => PTT Timeout
4 => PLL Out of lock
8 => Antenna failure
S32 0-255 Module Temperature This read-Only register indicates the module
temperature +50 (units C)
S33 0-1 Dual Redundancy
Status
2 = Active Primary
3 = Active Secondary
4 = Active Primary – no secondary detected
5 = Inactive Primary
6 = Inactive Secondary
S34 0-255 Battery Voltage This read-Only register indicates the voltage at the
battery input (Units 0.1V)
S35 0-255 Supply Voltage This read-Only register indicates the voltage at the
Supply input (Units 0.1V)
S36 System Channel
Duty Cycle %
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