Custom Audio Electronics VKP112, Руководство пользователя

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2.1 RS232 SERIAL INTERFACE
RS232 SERIAL
1 5
6 9
The printer has an RS232 serial interface and is connected by means of a 9 pin female connector (see fi g.
2.1). In the following table, the signals present on the connector are listed:
PIN SIGNAL IN / OUT A DESCRIPTIION
1
DCD OUT DCD Data Carrier detect. Printer ON (active at level RS232
high)
2
TXD OUT RXD Receive data. Serial output ( from Host)
3
RXD IN TXD Transmit data. Serial data input (towards Host)
4
N.C. - N.C. Not connected
5
GND - GND Ground signal
6
DSR OUT DSR
Data Set Ready. Printer on and operating (active at
RS232 level high).
7
N.C. - N.C. Not connected
8
RTS OUT CTS
Clear to send. Ready to receive data (active at RS232
high level)
9
N.C. - N.C. Not connected
(Fig.2.1)
(Tab.2.1)
2. INTERFACES
User Manual
VKP112 2-1