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J606 PC-COM4

22192-09197-000-000

PC-COM4

Introduction

The PC-COM4 is an 8 or 16-bit ISABUS module providing up to four 16c550 type serial

asynchronous communications channels: two of non-isolated RS232 and two channels that

can be configured as either non-isolated RS232 or optically isolated RS422 or RS485. A

depopulated version of the PC- COM4 (PC-COM4-RS232) is available, which does not contain

the RS422/485 circuitry.

Features

鈥?4 off 16C550 compatible UART channels. (Referred to as channels A, B, C & D)

鈥?2 off opto-isolated RS422/485 ports, or full feature RS232 ports. (channels A & B)

鈥?2 off full feature RS232 ports. (channels C & D)

鈥?Baud rates up to 115.2kbaud supported.

鈥?+5V only operation.

鈥?Configurable as standard PC AT COM1-4 or anywhere in I/O address range 000-3FFh

鈥?Each channel is link selectable IRQ of 3, 4, 5, 7, 9, 10, 11, 12 or 15.

鈥?Combined interrupt option for any channel combination to IRQ 3, 4, 5, 7, 9, 10, 11, 12, or 15.

鈥?ISABUS 16 bit interface (but can be used in 8-bit slot if IRQ10,11, 12 and 15 are not required).

鈥?Board access LED.

鈥?Isolation:

Channel A to Channel B

>100V DC

Channels A or B to Channels C or D

> 100V DC

Channels A or B to ISABUS Ground

> 100V DC

Channels A or B to Chassis Ground

> 100V DC

鈥?Power Requirements:

120mA (typ) at +5V DC

鈥?Temperature Range:

0

擄C

to +70

擄C

operating.

- 40

擄C

to +125

擄C

storage.

鈥?MTBF 181, 152 hours (PC-COM4)

232, 837 hours (PC-COM4-RS232)

(Calculated using MIL-HDBK-217F generic failure rates at Ground Benign)

Note:

In order to prevent confusion between standard PC AT nomenclature of COM1-4, this

manual will refer to the four communications channels on the PC-COM4 as Channel A-

D. Where the manual refers to COM1-4, this will mean the standard PC AT

communications ports.

Product Components

As shipped, the PC-COM4 is supplied with the following items:

鈥?The PC-COM4 board.

鈥?This Manual

鈥?A disk containing a 鈥楥鈥?example program and the UART data-sheet in Adobe Acrobat

(Portable Document) Format.

Adobe Acrobat Reader can be downloaded free of charge from Arcom鈥檚 Internet Site at

http://www.arcomcontrols.com

CONTROL SYSTEMS

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• PC-COM4
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