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BLASTRONIX 232/422/485

COMPUTER MODULES, INC.

BLASTRONIX 232/422/485

Card Type

Serial

Chipset

16C552

I/O Options

Serial ports (2)

Data Bus

16-bit ISA

Card Size

Full height, half length

CONNECTIONS

Function

Label

Function

Label

RS-232, RS-422, or RS-485 serial port 1

CN1

RS-232, RS-422, or RS-485 serial port 2

CN2

USER CONFIGURABLE SETTINGS

Setting

Label

Position

 

Serial line is not terminated

RN1

Not installed

 

Serial line is terminated

RN1

Installed

Serial port 1 enabled

SW1/1

On

 

Serial port 1 disabled

SW1/1

Off

Serial port 2 enabled

SW2/1

On

 

Serial port 2 disabled

SW2/1

Off

Status register enabled

SW3/1

On

 

Status register disabled

SW3/1

Off

SERIAL PORT INTERRUPT SELECTION

Setting

J2/A

J2/B

J2/C

J2/D

J2/E

J2/F

2/9

Open

Open

Open

Open

Open

Closed

3

Closed

Open

Open

Open

Open

Open

4

Open

Closed

Open

Open

Open

Open

5

Open

Open

Closed

Open

Open

Open

6

Open

Open

Open

Closed

Open

Open

7

Open

Open

Open

Open

Closed

Open

10

Open

Open

Open

Open

Open

Open

11

Open

Open

Open

Open

Open

Open

12

Open

Open

Open

Open

Open

Open

14

Open

Open

Open

Open

Open

Open

15

Open

Open

Open

Open

Open

Open

SERIAL PORT INTERRUPT SELECTION (CON'T)

Setting

J2/G

J2/H

J2/I

J2/J

J2/K

2/9

Open

Open

Open

Open

Open

3

Open

Open

Open

Open

Open

4

Open

Open

Open

Open

Open

5

Open

Open

Open

Open

Open

6

Open

Open

Open

Open

Open

7

Open

Open

Open

Open

Open

10

Closed

Open

Open

Open

Open

11

Open

Closed

Open

Open

Open

12

Open

Open

Closed

Open

Open

14

Open

Open

Open

Closed

Open

15

Open

Open

Open

Open

Closed

Note:The settings for jumper J3 are identical to those for J2. J2 sets the interrupt for port 1, and J3 sets the interrupt for port 2.

SHARED INTERRUPT SELECTION

Setting

J1/A

J1/B

J1/C

J1/D

J1/E

J1/F

2/9

Open

Open

Open

Open

Open

Closed

3

Closed

Open

Open

Open

Open

Open

4

Open

Closed

Open

Open

Open

Open

5

Open

Open

Closed

Open

Open

Open

6

Open

Open

Open

Closed

Open

Open

7

Open

Open

Open

Open

Closed

Open

10

Open

Open

Open

Open

Open

Open

11

Open

Open

Open

Open

Open

Open

12

Open

Open

Open

Open

Open

Open

14

Open

Open

Open

Open

Open

Open

15

Open

Open

Open

Open

Open

Open

SHARED INTERRUPT SELECTION (CON'T)

Setting

J1/G

J1/H

J1/I

J1/J

J1/K

2/9

Open

Open

Open

Open

Open

3

Open

Open

Open

Open

Open

4

Open

Open

Open

Open

Open

5

Open

Open

Open

Open

Open

6

Open

Open

Open

Open

Open

7

Open

Open

Open

Open

Open

10

Closed

Open

Open

Open

Open

11

Open

Closed

Open

Open

Open

12

Open

Open

Closed

Open

Open

14

Open

Open

Open

Closed

Open

15

Open

Open

Open

Open

Closed

Note:To use interrupt sharing, both ports should be set to the same interrupt as is set with this table.

STATUS REGISTER ADDRESS SELECTION

Setting

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

 

000h

Off

Off

Off

Off

Off

Off

Off

 

008h

On

Off

Off

Off

Off

Off

Off

 

010h

Off

On

Off

Off

Off

Off

Off

 

018h

On

On

Off

Off

Off

Off

Off

 

020h

Off

Off

On

Off

Off

Off

Off

300h

Off

Off

Off

Off

Off

On

On

 

3D8h

On

On

Off

On

On

On

On

 

3E0h

Off

Off

On

On

On

On

On

 

3E8h

On

Off

On

On

On

On

On

 

3F0h

Off

On

On

On

On

On

On

 

3F8h

On

On

On

On

On

On

On

Note: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Most Significant Bit and switch SW1/2 is the Least Significant Bit. The switches have the following decimal values: SW1/8=512, SW1/7=256, SW1/6=128, SW1/5=64, SW1/4=32, SW1/3=16, SW1/2=8. Turn on the switches and add the values of the switches that are on to obtain the correct memory address. (Off=0, On=1)

SERIAL PORT 1 ADDRESS SELECTION

Setting

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

 

000h

Off

Off

Off

Off

Off

Off

Off

 

008h

On

Off

Off

Off

Off

Off

Off

 

010h

Off

On

Off

Off

Off

Off

Off

 

018h

On

On

Off

Off

Off

Off

Off

 

020h

Off

Off

On

Off

Off

Off

Off

 

2E8h (COM4:)

On

Off

On

On

On

Off

On

 

2F8h (COM2:)

On

On

On

On

On

Off

On

 

3D8h

On

On

Off

On

On

On

On

 

3E0h

Off

Off

On

On

On

On

On

 

3E8h (COM3:)

On

Off

On

On

On

On

On

 

3F0h

Off

On

On

On

On

On

On

3F8h (COM1:)

On

On

On

On

On

On

On

Note: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW2/8 is the Most Significant Bit and switch SW2/2 is the Least Significant Bit. The switches have the following decimal values: SW2/8=512, SW2/7=256, SW2/6=128, SW2/5=64, SW2/4=32, SW2/3=16, SW2/2=8. Turn on the switches and add the values of the switches that are on to obtain the correct memory address. (Off=0, On=1)

SERIAL PORT 2 ADDRESS SELECTION

Setting

SW3/2

SW3/3

SW3/4

SW3/5

SW3/6

SW3/7

SW3/8

 

000h

Off

Off

Off

Off

Off

Off

Off

 

008h

On

Off

Off

Off

Off

Off

Off

 

010h

Off

On

Off

Off

Off

Off

Off

 

018h

On

On

Off

Off

Off

Off

Off

 

020h

Off

Off

On

Off

Off

Off

Off

 

2E8h (COM4:)

On

Off

On

On

On

Off

On

2F8h (COM2:)

On

On

On

On

On

Off

On

 

3D8h

On

On

Off

On

On

On

On

 

3E0h

Off

Off

On

On

On

On

On

 

3E8h (COM3:)

On

Off

On

On

On

On

On

 

3F0h

Off

On

On

On

On

On

On

 

3F8h (COM1:)

On

On

On

On

On

On

On

Note: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW3/8 is the Most Significant Bit and switch SW3/2 is the Least Significant Bit. The switches have the following decimal values: SW3/8=512, SW3/7=256, SW3/6=128, SW3/5=64, SW3/4=32, SW3/3=16, SW3/2=8. Turn on the switches and add the values of the switches that are on to obtain the correct memory address. (Off=0, On=1)

SERIAL PORT 1 TYPE SELECTION

Setting

JP4/G

JP4/H

SW4/1

SW4/2

SW4/3

SW4/4

SW4/5

SW4/6

RS-232

Open

Open

On

On

On

On

On

On

RS-422

Open

Open

Off

Off

Off

Off

Off

Off

RS-485

Closed

Closed

Off

Off

Off

Off

Off

Off

SERIAL PORT 1 TYPE SELECTION (CON'T)

Setting

SW4/7

SW4/8

SW4/9

SW4/10

SW4/11

SW4/12

SW5/1

SW5/2

SW5/3

RS-232

On

On

On

On

On

On

On

On

On

RS-422

Off

Off

Off

Off

Off

Off

Off

Off

Off

RS-485

Off

Off

Off

Off

Off

Off

Off

Off

Off

SERIAL PORT 1 TYPE SELECTION (CON'T)

Setting

SW5/4

SW5/5

SW5/6

SW5/7

SW5/8

SW5/9

SW5/10

SW5/11

SW5/12

RS-232

On

On

On

On

On

On

On

On

On

RS-422

Off

Off

Off

Off

Off

Off

Off

Off

Off

RS-485

Off

Off

Off

Off

Off

Off

Off

Off

Off

SERIAL PORT 2 TYPE SELECTION

Setting

JP5/G

JP5/H

SW6/1

SW6/2

SW6/3

SW6/4

SW6/5

SW6/6

RS-232

Open

Open

On

On

On

On

On

On

RS-422

Open

Open

Off

Off

Off

Off

Off

Off

RS-485

Closed

Closed

Off

Off

Off

Off

Off

Off

SERIAL PORT 2 TYPE SELECTION (CON'T)

Setting

SW6/7

SW6/8

SW6/9

SW6/10

SW6/11

SW6/12

SW7/1

SW7/2

SW7/3

RS-232

On

On

On

On

On

On

On

On

On

RS-422

Off

Off

Off

Off

Off

Off

Off

Off

Off

RS-485

Off

Off

Off

Off

Off

Off

Off

Off

Off

SERIAL PORT 2 TYPE SELECTION (CON'T)

Setting

SW7/4

SW7/5

SW7/6

SW7/7

SW7/8

SW7/9

SW7/10

SW7/11

SW7/12

RS-232

On

On

On

On

On

On

On

On

On

RS-422

Off

Off

Off

Off

Off

Off

Off

Off

Off

RS-485

Off

Off

Off

Off

Off

Off

Off

Off

Off

SERIAL PORT 1 CONFIGURATION

Setting

J6

DTE

Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12, 13 & 14 closed

DCE

Pins 1 & 3, 2 & 4, 5 & 7, 6 & 8, 9 & 11, 10 & 12 closed

SERIAL PORT 2 CONFIGURATION

Setting

J7

DTE

Pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10, 11 & 12, 13 & 14 closed

DCE

Pins 1 & 3, 2 & 4, 5 & 7, 6 & 8, 9 & 11, 10 & 12 closed

PORT 1 RS-422/485 DRIVER CONFIGURATION

Setting

J4/A

J4/B

J4/C

J4/D

J4/E

J4/F

J4/I

J4/J

Transmit and receive drivers always enabled

Closed

Closed

Open

Open

Open

Open

Open

Open

 

Transmit enabled, receive disabled on high RTS

Open

Open

Closed

Closed

Open

Open

Open

Open

 

Transmit and receive drivers controlled by software

Open

Open

Open

Open

Closed

Closed

Open

Open

 

Transmit enabled, receive disabled when port attempts to transmit

Open

Open

Open

Open

Open

Open

Closed

Closed

Note:The drivers may not be always enabled in RS-485 mode.

PORT 2 RS-422/485 DRIVER CONFIGURATION

Setting

J5/A

J5/B

J5/C

J5/D

J5/E

J5/F

J5/I

J5/J

Transmit and receive drivers always enabled

Closed

Closed

Open

Open

Open

Open

Open

Open

 

Transmit enabled, receive disabled on high RTS

Open

Open

Closed

Closed

Open

Open

Open

Open

 

Transmit and receive drivers controlled by software

Open

Open

Open

Open

Closed

Closed

Open

Open

 

Transmit enabled, receive disabled when port attempts to transmit

Open

Open

Open

Open

Open

Open

Closed

Closed

Note:The drivers may not be always enabled in RS-485 mode.