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Technical Information
RS 232/RS 485 Communication Description
RS 232/RS 485 Communication Description
Both the RS 232 and the RS 485 interfaces are available on the connector J2.
The communication protocol is the same (see the structure below), but only
the RS 485 manages the address field. Therefore to enable the RS 485 is
necessary to select the type of communication as well as the device address by
means of the Navigator software.
Communication Format
Communication Protocol
The communication protocol is a MASTER/SLAVE type where:
The communication is performed in the following way:
1.
2.
The MESSAGE is a string with the following format:
<STX>+<ADDR>+<WIN>+<COM>+<DATA>+<ETX>+<CRC>
where:
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8 data bit
no parity
1 stop bit
baud rate: 600/1200/2400/4800/9600 programmable
Host = MASTER
Controller = SLAVE
the host (MASTER) send a MESSAGE + CRC to the controller (SLAVE);
the controller answer with an ANSWER + CRC to the host.
TV 1001 Navigator User Manual / 87-900-945-01(L)
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