PPM-C407/Configuration
v1.0
www.winsystems.com
Page 25
RS-232 transceivers have charge pumps to generate the plus and minus voltages so the
PPM-C407 only re5 V to operate. Each port is set up to provide internal
diagnostics such as loopback and echo mode on the data stream. An independent,
software programmable baud rate generator is selectable from 50 through 115.2 kbps.
Individual modem handshake control signals are supported for all ports.
RS-232 interface levels are supported on all four serial ports which can be enabled in
the BIOS. COM3 and COM4 also have RS-422/RS-485 support.
COM1, COM2, COM3, COM4 (DB-9 Male and Female)
The four ports terminate with a Molex 502046-4070, 2x20, 1.25 mm pitch (Duo-
Clasp™) right angle locking header connector (WS G650-2040-7HC).
Pin
RS-232
RS-422
RS-485
1
DCD
N/A
N/A
2
RX
TX+
TX/RX+
3
TX
RX+
N/A
4
DTR
N/A
N/A
5
GND
GND
GND
6
DSR
TX-
TX/RX-
7
RTS
RX-
N/A
8
CTR
N/A
N/A
9
RI
N/A
N/A
MALE
FEMALE
1
1
6
6
5
5
9
9
PRELIMINARY
