Contec 12.1, Руководство пользователя

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4.
Serial Port Interface: SERIAL A, EXT-A, EXT-B
SERIAL A, EXT-A, EXT-B (RS-232C Ports)
The product has 3 ports of RS-232C compliant serial ports supporting up to a baud rate of 115,200bps
with a 16-byte transmission-dedicated data buffer and a 16-byte reception-dedicated data buffer. You
can use “Chapter 5 BIOS Setup” to configure an I/O address, interrupt and unused state for each of the
ports independently. (The same I/O address and IRQ cannot be shared with any other device.)
Please refer to “Chapter 6 I/O Port Addresses”
for more information on I/O address and register function.
Table 4.5. SERIAL A, Ext-A, Ext-B I/O Addresses and Interrupts
SERIAL I/O address Interrupt
A 3F8h - 3FFh
IRQ 4
Ext-A 2D0h – 2D7h IRQ 10
Ext-B 2D8h – 2DFh IRQ 11
Table 4.6. Serial Port Connector
Connector used on
the product
9-pin D-SUB (MALE)
1 5
9 6
No.4-40UNC
Inch screw
threads
Pin No.
Signal
name
Meaning Direction
1 CD Carrier detect Input
2 RD Received data Input
3 TD Transmitted data Output
4 DTR Data terminal ready Output
5 GND Signal ground -----
6 DSR Data set ready Input
7 RTS Request to send Output
8 CTS Clear to send Input
9 RI Ring indicator Input
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PT-955LS-AC User’s manual