Black Box IC111C Bedienungsanleitung

CUSTOMER

SUPPORT

INFORMATION

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JUNE 2000

IC111C

IC181C

Four Port RS-232 Serial Interface

FOUR PORT RS-232 SERIAL INTERFACE

FEDERAL COMMUNICATIONS COMMISSION

AND

INDUSTRY CANADA

RADIO FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio frequency energy a

nd if not installed and used properly, that is, in strict accordance with the

manufacturer’s instructions, may cause interference to radio communication.

It has been tested and found to comply with the limits for a Class A

computing device in accordance with the specifications in Subpart J of

Part 15 of FCC rules, which are designed to provide reasonable protection

against such interference when the equipment is operated in a commercial

environment. Operation of this equipment in a residential area is likely to

cause interference, in which case the user at his own expense will be required

to take whatever measures may be necessary to correct the interference.

Changes or modifications not expressly approved by the party responsible

for compliance could void the user’s authority to operate the equipment.

This digital apparatus does not exceed the Class A limits for radio noise emission from

digital apparatus set out in the Radio Interference Regulation of Industry Canada.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites

applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le

brouillage radioélectrique publié par Industrie Canada.

TRADEMARKS USED IN THIS MANUAL

IBM is a registered trademark, and XT is a trademark of IBM Corporation.

U.L. is a registered trademark of Underwriters Laboratories, Inc.

FOUR PORT RS-232 SERIAL INTERFACE

Contents

Chapter Page

1. Specifications...................................................................................................1

2. Introduction ....................................................................................................2

2.1 Overview..................................................................................................2

2.2 What’s Included......................................................................................2

2.3 Features...................................................................................................3

2.4 Technical Description............................................................................4

3. Address Selection............................................................................................5

4. Option Selection .............................................................................................6

4.1 Port Enable/Disable...............................................................................6

4.2 Interrupt-Mode Options ........................................................................8

5. Installation.....................................................................................................10

5.1 Software Installation .............................................................................10

5.1.1 Windows 3.1x...............................................................................10

5.1.2 Windows 95/98 ...........................................................................10

5.1.3 Windows NT ................................................................................10

5.2 Hardware Installation ...........................................................................10

Appendix A: Circuit-Board Design ...................................................................11

Appendix B: Troubleshooting ..........................................................................12

CHAPTER 1: Specifications

Protocol — Asynchronous

Number of Ports — 4

Speed — IC111C: Up to 115.2 Kbps; IC181C: 460.8 kbps and higher

Operation — RS-232

Connectors — DB37M on card; (1) 3-ft. (0.9-m) DB37F-to-4x DB25M octopus

cable, included

Maximum Distance — 50 ft. (15.2 m) @ 19.2 Kbps with 2500 pF max. cable

capacitance (lower capacitance will allow greater distances)

Communications Chip — IC111C: 16550 UART; IC181C: 16850 UART

MTBF — >150,000 hours

MTTR — <0.25 hours

Materials — Boards are built to U.L.®94V0 rating and are 100% electrically

tested. Boards are solder mask over bare copper or tin nickel

Manufacturing — IPC 610-A Class-III standards are adhered to with a 0.1

visual A.Q.L. and 100% functional testing

Operating Temperature — 32° to 122°F (0° to 50°C)

Storage Temperature — -4° to 158°F (-20° to 70°C)

Humidity — 10 to 90% relative humidity, noncondensing

Power — +5 VDC @ 200 mA ±12 V @ 50 mA

Size — 4.2"W x 8.6"D (10.7 x 21.9 cm)

Weight — 0.4 lb. (0.2 kg)

1. Specifications

FOUR PORT RS-232 SERIAL INTERFACE

2.1 Overview

The Four Port RS-232 Serial Interface provides your PC system with four RS-

232 asynchronous ports. Connect to any device that uses the RS-232 protocol,

such as modems, data-entry terminals, and plotters.

The Serial Interface also includes a serial utility diskette with Seacom, a DOS

interrupt and driver package. Seacom allows data to be buffered, eliminating

data loss in high-speed data transfers. It also allows more than

4 ports (256 max.) to be configured and utilized under DOS.

The README file on the serial utility diskette contains information about the

latest changes and revisions. To view this file, insert the diskette into drive A

or B and type A:TYPE READ.ME|MORE [ENTER] or B:TYPE

READ.ME|MORE [ENTER].

2.2 What’s Included

Your Serial Interface should come with the following items. If any of these

items are missing or damaged, contact your supplier.

(1) Four Port RS-232 Serial Interface with 1x DB37F,

(1) Octopus cable, (1) 3-ft. (0.9-m) to 4x DB25M,

(2) 3.5" serial utility diskettes,

This manual

2. Introduction

CHAPTER 2: Introduction

2.3 Features

Listed below are the special features your Serial Interface offers.

• Each port is independently addressable.

• Eleven interrupt options, including AT interrupts, for simple integration

into existing systems.

• IRQs can be shared or individually set for each port.

• Supports Interrupt Sharing—only one interrupt line required for multiple

ports.

• Supports any character set defined by binary notation.

• 16550 UARTs (IC111C) or 16850 UARTs (IC181C) help ensure against

data loss.

• Faster baud rates—up to 115.2 Kbps.

• Provides COM1: through COM4: Turnkey Solution.

• Individually selectable address and interrupts (IRQs 2[9]–7 and 10, 11, 12,

and 15).

• Four DB25 male connectors provided using the octopus cable.

FOUR PORT RS-232 SERIAL INTERFACE

2.4 Technical Description

The Four Port RS-232 Serial Interface provides four additional serial ports for

terminals, modems, printers, etc. The Serial Interface can be configured as

COM1: through COM4:, or as any other I/O address (up to 3FF Hex),

providing total compatibility with most communications software and

languages. The Four Port RS-232 Serial Interface (IC111C) uses the 16550

UART chip, which features programmable baud rate, data format, interrupt

control, and a 16-byte FIFO. The IC181C uses the 16850 UART.

Modem Control Signal Considerations

Some software packages require the use of the modem handshake signals

such as CTS or DCD. Consult your software manual to determine the

requirements of your modem control signals. If no requirements are

mentioned, or if you are not sure, a safe configuration is to tie DTR to DSR

and DCD (6-8-20), and tie RTS to CTS (4-5). This will typically satisfy the

modem control-signal requirements for most communications software.

Pin Number Signal Name Mode

2 Transmit Data (TD) Output RS-232

4 Request To Send (RTS) Output RS-232

20 Data Term Ready (DTR) Output RS-232

7 Ground (GND) ––––––––––––

3 Receive Data (RD) Input RS-232

8 Data Carrier Detect (DCD) Input RS-232

6 Data Set Ready (DSR) Input RS-232

5 Clear To Send (CTS) Input RS-232

22 Ring Indicator (RI) Input RS-232

Table 2-1. P1 through P4 pinouts as found on the

octopus cable (standard RS-232C DTE)

CHAPTER 3: Address Selection

NOTE

Be sure to set the address selections and jumper options before

installation.

Each serial port on the Four Port RS-232 Serial Interface occupies 8 con-

secutive I/O locations. DIP switch SW4 sets the base address for Port 1, SW3

for Port 2, SW2 for Port 3, and SW1 for Port 4. Be careful when selecting the

base address as some selections conflict with existing PC ports. The following

table shows several examples that usually do not cause a conflict.

Address Binary Switch Position Setting

Hex A9 A0 1 2 3 4 5 6 7

280-287 1010000XXX OFF ON OFF ON ON ON ON

2A0-2A7 1010100XXX OFF ON OFF ON OFF ON ON

2E8-2EF 1011101XXX OFF ON OFF OFF OFF ON OFF

2F8-2FF 1011111XXX OFF ON OFF OFF OFF OFF OFF

3E8-3EF 1111101XXX OFF OFF OFF OFF OFF ON OFF

300-307 1100000XXX OFF OFF ON ON ON ON ON

328-32F 1100101XXX OFF OFF ON ON OFF ON OFF

3F8-3FF 1111111XXX OFF OFF OFF OFF OFF OFF OFF

Typically COM1:=3F8h; COM2:=2F8h; COM3:=3E8h; COM4:=2E8h

The following illustration shows the correlation between the DIP-switch

setting and the address bits used to determine the base address. In the figure

below, the address 300 hex through 307 hex is selected (300 hex =11 0000

0XXX in binary representation, where X is a non-selectable address bit). Note

that setting the switch ON (or closed) corresponds to a “0” in the address,

while leaving it OFF (or open) corresponds to a “1.”

A9 A3

OFF

1 2 3 4 5 6 7 8

3. Address Selection

FOUR PORT RS-232 SERIAL INTERFACE

NOTE

Be sure to set the address selections and jumper options before

installation.

The board contains several jumper straps for each port which must be set for

proper operation.

4.1 Port Enable/Disable

Each port on the Four Port RS-232 can be enabled or disabled with switch

position 8 on the DIP switch. The port is enabled with the switch ON (or

closed) and disabled when OFF (or open). If any port is disabled, be sure to

also disable the interrupt request for that port by removing the IRQ jumper.

Headers E1–E4 select the IRQ for each serial port. If COM1: is selected, this

jumper must be on the IRQ4 setting. If COM2: is selected, this jumper must

be on IRQ3.

NOTE

Most communications software applications default COM3: to IRQ4 and

COM4: to IRQ3. This requires the sharing of interrupts between COM1:

and COM3:, and between COM2: and COM4:. While this is the default, it

is not always the best setting. Check your software configuration

instructions to determine the most appropriate IRQ setting.

4. Option Selection

CHAPTER 4: Option Selection

Any two or more ports can share a common IRQ by placing the jumpers on

the same IRQ setting, and setting the appropriate selections at E1. Consult

your particular software for IRQ selection. If no interrupt is desired, remove

the jumper.

NOTE

IRQ 2 on AT class machines is not available. IRQ 9 is substituted in place

of IRQ 2. To select IRQ 9, place jumper in the IRQ 2 position.

Figure 4-1. IRQ Selection.

Figure 4-1 shows the correlation between jumper block E5 and the interrupt

jumpers (E1–E4). This example shows the Four Port RS-232 Serial Interface

shipping configuration with COM1: and COM3: sharing interrupt 4 and

COM2: and COM4: sharing interrupt 3. See Section 4.2 for more information

on the different configuration options available with Jumper E5.

1 2

3 4

PORT 1 (COM1)

PORT 2 (COM2)

PORT 3 (COM3)

PORT 4 (COM4)

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