4. Each Component Function
22
VPC-500 Series User’s Manual
◆
Serial Port Interface : SERIAL
The product has 2 channels 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.
Table 4.3 SERIAL I/O Addresses and Interrupts
SERIAL
I/O Address
Interrupt
-
3F8h *1
IRQ 4 *1
*1
Leave these settings as configured.
Table 4.4 Serial Port Connector
Connector type
9pin D-SUB connector (male)
RS-232C
RS-422
RS-485
Pin No.
Signal name
Pin No.
Signal name
Pin No.
Signal name
1
DCD
1
TX-
1
DATA-
2
RD
2
TX+
2
DATA+
3
TD
3
RX+
3
N.C.
4
DTR
4
RX-
4
N.C.
5
GND
5
GND
5
GND
6
DSR
6
N.C.
6
N.C.
7
RTS
7
N.C.
7
N.C.
8
CTS
8
N.C.
8
N.C.
9
RI
9
N.C.
9
N.C.
1
5
9
6
No.4-40UNC
Inch screw threads
