Cross Technologies 210-01, Инструкция по эксплуатации

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3.2 Command Code Description - The 210-01 demodulates a
multiplexed audio channel and data channel. The audio channel delivers
a voice paging. The data channel provides addressable control
information. The 210-01 utilizes a Microchip 16C63 processor to receive
and process control data, and to control the audio switch.
3.2.1 Command Stream - The command stream is provided as an
Asynchronous RS232 data channel, running at 9600 baud, with NO
parity, 8 bits/character, and 1 stop bit. This data stream contains
packets of control data, and is transmitted to the 210-01 continuously.
The structure of the command stream consists of the following bytes:
H1 | H2 | H3 | H4 | A1 | A2 | A3 | A4 | A5 | A6 | A7 | A8 | A9 | A10 | A11 | A12 | CHECKSUM
H1 - H4 - The reception of fixed header bytes, H1 H2, H3, H4
indicates that the next 12 bytes contain the bit assigned address of each
210-01 which is to enable and provide paging audio.
A1 A12 -These twelve address bytes, select 96 bit assigned addresses,
for control of the audio for each address.
CHECKSUM - This byte contains the CHECKSUM for error detection.
3.2.2 Front Panel BCD Switch - The address for any particular
210-01 is assigned via two front panel rotary BCD switches. These
switches provide a possibility of 100 settings, displaying 00-99. These
settings are assigned as follows:
00 Special function Audio is be switched ON if a valid packet is
received.
Note, the packet need not be addressed to the particular decoder.
01 96 Address assignment for 210-01, address 01 96 respectively
97
Undefined
98 Audio page forced OFF ( switched to external audio )
99 Audio page forced ON ( switched to paging audio )
The microprocessor reads the front panel switches every 1 second , and
stores the address or applies the special function described above.
210-01 manual Rev B Page 11 2/18/00