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7.3.4
Optional Serial Interface 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 enough for exchanging information between computer and printer (one
receive line, one send line, one line for common grounding).
Type
Synchronization
Transmission rate
Signal status
Connection cable
Interface connections
Transmission protocol
Capacity of data buffer
Connector assignment
Connector no.
3
4
2
6
7
8
5
Shield
RS232C interface
Asynchronous
600 Baud to 19200 Baud
OFF (log.1) -3 V to -15 V
ON (log. 0) +3 V to +15 V
up to 15 m length
ITT Cannon connector, series DB-9 S
XON/XOFF, ENQ/STX, READY/ BUSY,
Robust XON/XOFF, ETX/ ACK, ACK/NAK
512Byte min. 256KByte max
Direction Printer–PC
99
Signal
TxD
DTR
RxD
DSR
RTS
CTS
Signal Ground SG
Frame Ground FG
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