nbb AT rs232422485.p65
AT RS232/422/485
FEATURES
DCD TXD GND
TXD- RTS- GND
TXD+ RTS+
RXD DTR
1 2 3 4 5
1 2 3 4 5
6 7 8 9
6 7 8 9
RTS
RXD+ CTS+
RI
DSR CTS
RXD- CTS-
422 port (top)
232 port (bottom)
DESCRIPTION
The half size card provides one RS232 serial port, and one
RS422/485 serial port each with PC and AT interrupts. Both the
top RS422/485 port and the lower RS232 port use the standard
AT 9 pin Male D connector.
The RS422/485 port is configurable as RS422 with and
without handshaking or RS485 full and half duplex.
Each serial port may be configured as COM1 - COM8 with
interrupt line jumpers set to IRQ 2-7, 10-12, 14-15. A detailed
installation guide, showing jumper settings for DOS,
Windows(95,98 &NT) and OS/2 is included. Sample wiring schemes
are also shown within the manual.
LPT PORT
RS485
By adding to this card the optional LPT
ADAPTER CABLE a parallel Printer Port
set as LPT1 to LPT3 with interrupt 5 & 7
may be used. This will allow OS/2,
Novell and UNIX full interrupt driven
printer output.
RS485 based on the RS422 ,allows up
to 32 driver/receivers pairs on a party
line data bus. Whilst only one of these
should be transmitting data at any
time, the rest can all simultaneously
listen to the data.
RS232
RS422
RS232 is the best known industry
standard providing asynchronous serial
communication using ±12 Volt logic
levels over distances up to 100 feet, at
speeds up to 20,000 Baud.
RS422 allows one transmitter and up to
10 receivers with data transmission up
to 10 Megabits per second for up to 40
feet, and up to 100 Kilobits per second
for up to 4000 feet (1219 metres).
ORDER
DESCRIPTION
AT RS232/422/485
AT RS232/422/485 FIFO
LPT ADAPTER CABLE
ALL PRODUCTS WITH HOTLINE SUPPORT AND 36 MONTH NO QUIBBLE WARRANTY
n 1 RS232 Serial Port and 1 RS422/
485 Serial port.
n Includes Windows software.
n Interrupts 2-7, 10-12, 14-15.
n COM1 - COM8.
n Utility disk with Sample programs,
Test and Terminal software with
source code.
n RS422/485 port has on board
terminating resistors with full failsafe open/short circuit detection.
n Optional 16550 FIFOs.
n Up to 115,200 Baud.
n LPT1-3, interrupts 5 & 7, need
optional LPT adapter cable.
n Handshake options:
RS422
q CTS/RTS flow control.
RS485 Gating
q TxD always/RTS true
enabled.
q RxD always enabled.
q RxD RTS true disabled.
q CTS forced true.
SPECIAL 485 FEATURES
n RxD±/TxD± multiplex jumpers.
Wiring Schemes:
n One talker, many listeners.
n Many talkers/listeners full duplex.
n Many talkers/listeners half duplex.
SPECIFICATION
Ports:
Baud rates:
Data Bits:
Stop Bits:
Parity:
Power:
Weight:
Size:
1 x RS232,
1 x RS422/485.
Up to 115,200.
5,6,7 or 8.
1 or 2.
Odd,even,none,
mark or space.
300mA @ 5V.
50mA @ ±12V.
0.12kg; 0.26lb.
10.7 x 12.5cm;
4.2 x 5in.
COMPATIBILTY
■
■
■
■
Windows 3.1, NT, 95 & 98.
OS/2.X, OS2 Warp V3.
PC to 486 & Pentium II.
DOS.
COMMON APPLICATIONS
■ Modem Connectivity
■ RAS Server
■ UPS Control
■ Instrument Control
■ Point of Sale
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