WaveWare RCD-1 - Manual (Page 10)

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7. Annunciation
There are two methods of annunciating message arrival for applications that need to perform digital output
manipulation while outputting message text to the serial port. The first method, called “Selective
Annunciation”, is to send a 7xxx command prefix along with the message text. The second method, called
“Global Annunciation”, is to configure 7xxx commands to be executed immediately when the unit’s CAP
Code is recognized, for all received messages.
NOTE: It is not recommended that either method be used to “power up” external equipment that will be
receiving the message text through the serial port. This is because the timing between Output Control
Command execution and message text output is not deterministic and may result in messages being output
before the receiving equipment it prepared to process it.
7.1. Command Messages (Selective Annunciation)
Under normal circumstances output commands and text messages are sent as separate POCSAG messages.
When the Function Command mode is enabled, text messages must be prefixed with a valid 7xxx output
command, including passwords and/or checksums when configured. Messages not containing a valid 7xxx
prefix are discarded and not output on the serial port. When a valid 7xxx command is included, the
command is executed (and output on the serial port when serial output is enabled and Function Command
Output Filtering is disabled) then the text following the command is output along with the configured
header and trailer strings. This feature provides security and/or sub-addressing functionality for text
messages as well as annunciation functionality on a message by message basis.
When no output change is desired, the 7000 command should be used. This command allows
password/subaddress and checksum processing without performing any output activities.
Selective Annunciation Mode Examples:
Received message: “Open 9-5 Mon-Fri”
Relay response: none
Serial output: none
Notes: 7XXX command prefix not included in message
Configuration: Subcode 1=123, Subcode 2 = 999
Received message: “7000Hello”
Relay response: none
Serial output: none
Notes: Subcode not included as part of message prefix
Configuration: Subcode 1=123, Subcode 2=999, Header=3C, Trailer=3E
Received message: “7000123What’s up?”
Relay response: none
Serial output: “<What’s up?>”
Notes: Includes proper 7XXX command and Subcode value. Header hex value of 3C = ASCII <
character
Configuration: Subcode 1=123, Subcode 2=999, Header=3C, Trailer=3E
Received message: “7000WowAre you ready?”
Relay response: none
Serial output: none
Notes: Password value of “Wow” doesn’t match programmed values of “123” or “999”
Configuration: Output Period = 10 sec., Header = blank, Trailer = blank
Received message: “7712999Hello World”
Relay response: Relay enabled, delay for 10 seconds, then disabled. Serial output: “Hello World”