W&T Electronics SW 1.9 Manuale utente
35
W&T PC cards for ISA bus systems
Subject to error and alteration
Manual
PC Cards for ISA Bus Systems
Type 13001, 13401
13601, 13801
13802
Release 1.3
W&T
36
W&T PC cards for ISA bus systems
© 01/2008 by Wiesemann & Theis GmbH
Subject to error and alteration:
Since it is possible that we make mistakes, you mustn’t use any
of our statements without verification. Please, inform us of any
error or misunderstanding you come about, so we can identify
and eliminate it as soon as possible.
Carry out your work on or with W&T products only to the
extent that they are described here and after you have comple-
tely read and understood the manual or guide. We are not liable
for unauthorized repairs or tampering. When in doubt, check
first with us or with your dealer.
37
W&T PC cards for ISA bus systems
Subject to error and alteration
W&T has made available an entire family of serial PC interface
cards which, thanks to the integrated galvanic isolation of the
ports from the PC and the ability to equip the serial ports on
the card with various physical interfaces, now meet the needs
of industrial automation.
This PC card family is described in the following pages
together with the corresponding technical data and connection
examples.
For up-to-date information on new developments, go to our
homepage at http://www.wut.de or use the email short-infos
available from the W&T Interface Club, which you can also sign
up for at the W&T homepage.
38
W&T PC cards for ISA bus systems
Index
Inhalt
PC cardsfor ISA Bus Systems
Mainboard for 2 Serial Interface Modules, #13001 ................. 39
2x 20mA, #13401 .............................................................. 45
2x RS422/RS485, #13601 ................................................... 51
2x RS232, non-isolated, #13801 ......................................... 59
2x RS232, 1kV isolated, #13802 .......................................... 63
39
W&T PC cards for ISA bus systems
Subject to error and alteration
Function
The W&T serial module mainboard equip your PC with two
independent serial interfaces with an insulation of up to 1000
Volts. The integration of interface specific components in the
form of exchangeable interface modules offer the possibility of
an optional card equipment with various types of interfaces.
This makes it possible to concentrate the connections of a
RS232-COM1: for a mouse and a 20mA-COM2: for a control
device on one card.
Both serial ports are equipped with type 16C550 FIFO UARTs;
this makes them functionally compatible with standard RS232
interfaces, so that the cards can easily be used with your
available software. Following a reset, the type 16550 elements
are in standard UART operating mode, so that there is no need
to worry about existing software. The FIFO mode has to be
activated explicitly by the software.
DMA operation of the 16550 UARTs is not supported by the
hardware of the W&T port cards.
Galvanic isolation
The two ports of the W&T serial module mainboard are galvani-
cally isolated from each other and with respect to the PC for an
isolation voltage of 1kV. The signals are insulated by means of
high-speed opto-couplers; energy is supplied to the driver and
receiver elements by means of an isolated DC/DC converter.
Please note that the shielding of the port connectors is directly
connected to the case of the PC by the metallic back panel.
Mainboard for Serial Interface Modules, #13001
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W&T PC cards for ISA bus systems
Configuring the card
The base address and the required interrupt line can be set by
DIP switches at the lower edge of the card.
Base addresses
The I/O base addresses of the two ports can be set indepen-
dently by DIP switches to 03F8H, 02F8H, 03E8H or 02E8H.
Serial ports at these base addresses are recognized by almost
all modern BIOS versions upon startup of the PC, and are
written to the BIOS RAM of the computer. Some older BIOS
versions recognize only two serial ports at the base addresses
for COM1 and COM2. In these rare cases, a separate program is
needed to search the computer for installed serial ports and
write the COM3 and COM4 ports to BIOS RAM. The necessary
software can be obtained from W&T on request. Setting both
ports to the same base address should be strictly avoided.
16
7
12
Port 2
Port 1
20V8
SW1
SW2
41
W&T PC cards for ISA bus systems
Subject to error and alteration
Please see the following tables for an explanation of the
address DIP switch settings:
Since the address is decoded by means of GALs, customizing
of the I/O address is no problem. This option makes it possible
to employ more than 4 serial ports on a computer, if the
software permits the use of additional I/O addresses.
Interrupt settings
The W&T serial PC Cards permit use of the standard interrupts
IRQ3 and IRQ4 for the serial ports COM1 and COM2, and
interrupts IRQ5 and IRQ7 for the parallel ports LPT1 and LPT2 if
the system has no parallel ports or if the built-in parallel ports
do not operate in interrupt mode. Since it is a long card, the PC
Card also supports interrupts IRQ9..IRQ12 of the second
interrupt controller.
Please see the following tables for an explanation of the IRQ
DIP switch setting:
SW 2.12 has
no function
SW 1.12 has
no function
Port 1 SW 1.9 SW 1.10 SW 1.11
Disabled X X OFF
COM1 (03F8H) OFF OFF ON
COM2 (02F8H) ON OFF ON
COM3 (03E8H) OFF ON ON
COM4 (02E8H) ON ON ON
Port 2 SW 2.9 SW 2.10 SW 2.11
Disabled X X OFF
COM1 (03F8H) OFF OFF ON
COM2 (02F8H) ON OFF ON
COM3 (03E8H) OFF ON ON
COM4 (02E8H) ON ON ON
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W&T PC cards for ISA bus systems
Interrupt setting port 1
Interrupt setting port 2
Connectors and pin assignment
The serial TTL interfaces of the W&T serial module mainboard
use pin header connectors with identical pin configuration. The
connector pin assignments are shown in the table below:
IRQ SW 1.1 SW 1.2 SW 1.3 SW 1.4 SW 1.5 SW 1.6 SW 1.7 SW 1.8
- OFF OFF OFF OFF OFF OFF OFF OFF
3 OFF OFF OFF ON OFF OFF OFF OFF
4 OFF OFF OFF OFF ON OFF OFF OFF
5 OFF OFF OFF OFF OFF ON OFF OFF
7 OFF OFF OFF OFF OFF OFF ON OFF
9 OFF OFF OFF OFF OFF OFF OFF ON
10 OFF OFF ON OFF OFF OFF OFF OFF
11 OFF ON OFF OFF OFF OFF OFF OFF
12 ON OFF OFF OFF OFF OFF OFF OFF
IRQ SW 2.1 SW 2.2 SW 2.3 SW 2.4 SW 2.5 SW 2.6 SW 2.7 SW 2.8
- OFF OFF OFF OFF OFF OFF OFF OFF
3 OFF OFF OFF ON OFF OFF OFF OFF
4 OFF OFF OFF OFF ON OFF OFF OFF
5 OFF OFF OFF OFF OFF ON OFF OFF
7 OFF OFF OFF OFF OFF OFF ON OFF
9 OFF OFF OFF OFF OFF OFF OFF ON
10 OFF OFF ON OFF OFF OFF OFF OFF
11 OFF ON OFF OFF OFF OFF OFF OFF
12 ON OFF OFF OFF OFF OFF OFF OFF
pin# signal function
1 5V power supply
2 RI input
3 RxD input
4 TxD output
5 n.c. n.c.
6 CTS input
7 DTR output
8 DSR input
9 RTS output
10 DCD input
11 12V power supply
12 GND signal ground
43
W&T PC cards for ISA bus systems
Subject to error and alteration
Pin 1 of the pin head connector has a square pad while the
other pins have round pads.
Technical data
Base addresses: 03F8H, 02F8H, 03E8H, 02E8H
Interrupts: IRQ3, IRQ4, IRQ5, IRQ7
IRQ9, IRQ10, IRQ11, IRQ12
Baudrate: 50..115200 Baud
Data format: any data format
Isolation: min. 1000 volts
TTL interface: 2mm pin header connector
Dimensions: 165 x 106 mm
Weight: approx. 200 g
Packing list: PC card, type 13001
44
W&T PC cards for ISA bus systems
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