DS 2.501A 10 - 16 03/03
IRQ SETTINGS
No two ports on an AT compatible machine may use the same interrupt
level (designated as IRQ numbers 0 to 7).
Serial ports set up as COM: 1 normally use IRQ: 4 and those set up as
COM: 2 normally use IRQ: 3. If no COM:2 is fitted, then COM: 3 or
COM: 4 may use IRQ: 3, otherwise either IRQ: 5 or IRQ: 7 should be
used. You may find interference with other adaptors/devices fitted to
your machine so a few attempts may be needed. Test the settings with
the SETUP software and observe the IRQ numbers given during
automatic configuration. See the Satchnet Reference Manual for
details of using the Setup program.
If an RS232 card is installed it is normally preset to COM 1.
HARDWIRED CONFIGURATION FOR OPTO 22 CARDS
RS485 PLUG WIRING FOR OPTO 22 CARDS
Note:
Pin numbers refer only to the Opto 22 AC24 and AC34 cards. For other adaptors
refer to the Pin designations (Tx+ etc) and the manufacturers manual.
The table below details the communications card required for the
various IBM models:
Note: :
If you have a PS/2, any card installed in your computer will come with a disk of
files. The files on the disk allow the computer to recognise the new card. These
files should be copied onto your backup reference disk and your computer
re-configured in accordance with the card manufacturers instructions.
OPTO-22 AC-24(AT) CARD SETUP
This card is for use with IBM PC-AT compatible and PS/2-30
computers.
Before use the computer may need to be configured from a Reference
disk supplied with your computer. This allows the computer to
recognise and operate the card. For details refer to the instructions
supplied with the card.
Make links B5, B6, B7 and those listed below with all other links
removed.
IMPORTANT
See section called "IRQ SETTINGS" Page 10 for details of IRQ
numbers.
OPTO-22 AC-32 CARD SETUP
This card is used in machines that support micro channel architecture
cards such as the IBM PS/2-50, 60, 70, 80 and 90 and can provide two
independent communication channels. Before use the computer must
be configured from the Reference disk supplied with your computer.
This allows the computer to recognise and operate the card. For details
refer to the instructions supplied with the card.
Jumpers should be set as follows:
A5, A6 & A7 for channel A
B5, B6 & B7 for channel B
Use the outputs from connector 1 J1 for channel A and connector J2
for channel B and remove all other jumpers.
PCM COM485 PCMCIA TO RS 485 CONVERTER
Set up the PCMCIA card using the software supplied with the card.
The loopback is pre-wired for the PCM COM485
9 Way Connector
Computer Opto-22 card
PC-AT, PS/2-30 (286)
PS/2-50 and higher
AC24AT
AC32
Loopback Wire
Hardwire
Link to
Controllers
Fig.12
Plug
Loopback Wire
COM 1: COM 1
COM 2: A8, COM 2
COM 3: A4, COM 2
COM 4: A4, A8 COM 2
Hardwire
Link to
Controllers
Fig.13
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