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Serial Interface
The serial interface is EIA Standard RS-232C serial input, start-stop synchronization.
• Baud Rate: 300, 600, 1200, 2400, 4800, 9600 (default), 19,200, or 38,400 bps
• Data Word Length: 7 (default) or 8 bits
• Parity: None (default), odd, even
• Stop Bit Length: 1 bit or more
• Message Buffer Length: 8,192 bytes
• Communication Protocol: Ready/Busy (default) or X-ON/X-OFF
Serial Interface Pin Assignments
Pin No. Signal Symbol Direction
1 Protective Ground PG -
2 Transmitted Data TD From printer
3 Received Data RD To printer
4 Request to Send RTS From printer
5 Unused - -
6 Data Set Ready DSR To printer
7 Signal Ground SG -
8 to 10 Unused - -
11 Supervisory Send Data SSD From printer
12 to 19 Unused - -
20 Data Terminal Ready DTR From printer
21 to 25 Unused - -
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