Tally Genicom MATRIX PRINTER 2250 - Manual (Page 169)

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Serial interface
V.24/RS232C
Your printer’s serial interface supports the RS232C specification. The
signals are received and transmitted by a 9 pin connector.
Basically 3 lines are already enough for exchanging information between
computer and printer (one receive line, one send line, one line for com-
mon grounding).
Type
Synchronization
Transmission rate
Signal status
Connection cable
Interface connections
Transmission protocol
Capacity of data buffer
RS232C interface
Asynchronous
600 Baud to 19.200 Baud
OFF = Mark = log.1 = –3 V bis –15 V
ON = Space = log. 0 = +3 V bis +15 V
up to 15 m length
ITT Cannon connector , series DB-9 S
XON/XOFF, ENQ/STX, READY/BUSY,
Robust XON/XOFF, ACK/NAK, ETX/ACK
64 KB max.
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PRINT
Reference manual Interfaces
159