SEALEVEL SYSTEMS, INC.

COMM+2/EX

Card Type Serial card
Chip Set Unidentified
Maximum Onboard Memory Unidentified
I/O Options Serial ports (2 RS-232, RS-422 or RS-485)
Data Bus 16-bit ISA


CONNECTIONS

Function

Label

Function

Label

Serial Port 1

J1

Serial Port 2

J2


USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Port 2 RS-485 driver always enabled

E3/A Open
 

Port 2 RS-485 driver enabled by RTS

E3/A Closed
 

Port 1 RS-485 driver always enabled

E4/A Open
 

Port 1 RS-485 driver enabled by RTS

E4/A Closed
» Port 1 enabled

SW1/8

On

  Port 1 disabled

SW1/8

Off

» Port 2 enabled SW2/8 On
  Port 2 disabled SW2/8 Off
Note: If port is disabled, the interrupt request for that port must be disabled as well.


BASE I/O ADDRESS SELECTION PORT 1

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

 

280h

Off

On

Off

On

On

On

On

 

2A0h

Off

On

Off

On

Off

On

On

 

2E8h

Off

On

Off

Off

Off

On

Off

 

2F8h

Off

On

Off

Off

Off

Off

Off

 

3E8h

Off

Off

Off

Off

Off

On

Off

 

300h

Off

Off

On

On

On

On

On

 

328h

Off

Off

On

On

Off

On

Off

»

3F8h

Off

Off

Off

Off

Off

Off

Off


BASE I/O ADDRESS SELECTION PORT 2

Setting

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

 

280h

Off

On

Off

On

On

On

On

 

2A0h

Off

On

Off

On

Off

On

On

 

2E8h

Off

On

Off

Off

Off

On

Off

»

2F8h

Off

On

Off

Off

Off

Off

Off

 

3E8h

Off

Off

Off

Off

Off

On

Off

 

300h

Off

Off

On

On

On

On

On

 

328h

Off

Off

On

On

Off

On

Off

 

3F8h

Off

Off

Off

Off

Off

Off

Off


SERIAL PORT 1 INTERRUPT SELECTION

IRQ

E1

 

2/9

Pins 1 & 2 closed

 

3

Pins 3 & 4 closed

»

4

Pins 5 & 6 closed

 

5

Pins 7 & 8 closed

  7 Pins 9 & 10 closed
 

10

Pins 11 & 12 closed
 

11

Pins 13 & 14 closed
 

12

Pins 15 & 16 closed
 

15

Pins 17 & 18 closed
Note: All pins are open unless designated as closed.


SERIAL PORT 2 INTERRUPT SELECTION

IRQ

E2

 

2/9

Pins 1 & 2 closed

»

3

Pins 3 & 4 closed

 

4

Pins 5 & 6 closed

 

5

Pins 7 & 8 closed

  7 Pins 9 & 10 closed
 

10

Pins 11 & 12 closed
 

11

Pins 13 & 14 closed
 

12

Pins 15 & 16 closed
 

15

Pins 17 & 18 closed
Note: All pins are open unless designated as closed.


SERIAL INTERRUPT MODE SELECTION PORT 1

IRQ

E10

Normal

Pins 1 & 2 closed

Shared interrupt mode

Pins 2 & 3 closed

Shared interrupt mode with pull-down resistor

Pins 3 & 4 closed

None

Open

Note: If the shared function is used, only one of the ports must be set to the pull-down resistor mode.


SERIAL INTERRUPT MODE SELECTION PORT 2

IRQ

E9

Normal

Pins 1 & 2 closed

Shared interrupt mode

Pins 2 & 3 closed

Shared interrupt mode with pull-down resistor

Pins 3 & 4 closed

None

Open

Note: If the shared function is used, only one of the ports must be set to the pull-down resistor mode.


GROUNDING  MODE SELECTION PORT 1

Setting

E4/B

E4/C

Port 1 direct ground enabled

Closed Open

Port 1 100 ohm high impedance ground enabled

Open

Closed


GROUNDING  MODE SELECTION PORT 2

Setting

E3/B

E3/C

Port 1 direct ground enabled

Closed Open

Port 1 100 ohm high impedance ground enabled

Open

Closed


INTERFACE SELECTION PORT 1

Setting

E5

E6

RS-422/485 mode

Open Closed

RS-232 mode

Closed

Open

Note: Install dip shunts to select port interface.


INTERFACE SELECTION PORT 2

Setting

E7

E8

RS-422/485 mode

Closed Open

RS-232 mode

Open

Closed

Note: Install dip shunts to select port interface.