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Lava RS422-550
Installation Manual
LAVA
RS-422
LAVA C OMP UTE RS
MADE IN
P.N.MOKO L26.2
CANADA
1
SERIAL
2
SERIAL
Rev.B00
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Hardware Set-Up
COM Address Configuration
Serial 1 Settings Serial 2 Settings
Serial 1
16C552
IRQ Settings
COM 1
(03F8h)*
Default for
Serial1
COM 2
(02F8h)**
Default for
Serial2
Serial Settings
COM 3
(03E8h)
COM 4
(02E8h)
Serial 2
COM 5
(02D8h)
COM 6
(02C8h)
Serial IRQ Settings
Serial 2
Serial 1
34211 7 51215 10
2
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RS-422 Configuration
Serial Configuration
1. Determine the number of serial ports installed in your system. Each
serial port will have an unique "COM" designation.Configure the
ports of the RS422-550 for two unused COM addresses.
2. Determine which IRQs (interrupts) are free in your system.Configure
each serial port on the RS422-550 for an unused IRQ. Although some
devices allow sharing of IRQs,this is not recommended. If you are
using Windows and are unsure which IRQs are available in your PC,
open Control Panel, System, Device Manager, and double-click on
Computer.This will list the IRQs that are . Select two unused
IRQs for the 2 ports on the RS422-550.
3a. For Serial 1, install the jumper above the number corresponding to
the desired IRQ, so that it covers the pin in the bottom row and the
pin in the middle row.
3b. For Serial 2, install the jumper above the number corresponding to
the desired IRQ, so that it covers the pin in the top row and the pin
in the middle row.
Do not install more than one IRQ jumper per serial port.
used
3
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4. For Windows users: After you have configured the RS422-550
jumpers, you will need to go through the“Add New Hardware”
procedure in Windows Control Panel.Install the two ports on the
RS422-550 as Standard Communications Ports when prompted.
Please note that after completing the Add New Hardware
procedure,you will likely have to return to Control Panel, System,
Device Manager, and modify the settings in the Ports section by
changing the Basic Configuration to match your RS422-550
hardware jumper settings.
Note: To disable a port, remove the jumper from both the COM
the corresponding IRQ jumper configuration pins.
Connector Details
The pins of the DB-9 female
connectors on the RS422-550 serial
board are illustrated on the right.
Port A and B connectors have
identical pinouts.
TX
54321
GND
RTS
6789
and
4
RX
CTS
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Lava
Technical Support
9:00 am to 5:30 pm Monday to Friday (Eastern Time)
Tel: +416 674-5942
Fax: + 416 674-8262
E-mail: tech@lavalink.com
Internet: www.lavalink.com
Lava Computer MFG Inc.
This device complies with part 15 of the FCC Rules.Operation is subject
to the following conditions:(1) This device may not cause harmful interference,
and (2) this device must accept any interference received, including interference
Lava Computer MFG Inc.908 Niagara Falls Blvd.#629. North Tonawanda NY 14120-2060
that may cause undesired operation.
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