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Selection of the standard interface, TTL serial and parallel, is given by the status of the S-EN pin of J1 (see
paragraph 2.3).
3.1 TTL SERIAL
In the serial protocol, the signals which characterize communication are TD, RD and RTS if the RTS/
CTS protocol has been selected; alternatively, if the XON/OFF protocol has been selected, the signals
are TD and RD. The reception and transmission format is fixed at 8 data bits, 1 stop bit, without parity
bits. It is possible, however, to vary the transmission speed, as indicated in paragraph 2.3.
Transmission format
RTS/CTS protocol
dato = data
attesa = standby
XON/OFF protocol
dato = data
attesa = standby
INTERFACE
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