ULTRA-485 IO card Settings and Configuration
SEALEVEL SYSTEMS, INC.
ULTRA-485
Card Type | Serial card |
Chip Set | Unidentified |
Maximum Onboard Memory | Unidentified |
I/O Options | Serial port |
Hard Drives supported | None |
Floppy drives supported | None |
Data Bus | 8-bit ISA |
Card Size | Full-length, full-height |
CONNECTIONS | |
Function | Label |
Serial Port | P3 |
BASE I/O ADDRESS SELECTION PORT 1 | |||||
Setting | SW1/1 | SW1/2 | SW1/3 | SW1/4 | |
Disabled | On | On | On | On | |
| 238h | Off | On | On | Off | |
| 280h | Off | Off | On | On | |
| 288h | Off | Off | On | Off | |
| 290h | Off | Off | Off | On | |
| 298h | Off | Off | Off | Off | |
2E8h | On | Off | On | On | |
2F8h | On | On | Off | On | |
| 300h | Off | On | Off | On | |
| 308h | Off | On | Off | Off | |
3E8h | On | On | Off | Off | |
| » | 3F8h | On | On | On | Off |
3220h | On | Off | On | Off | |
3228h | On | Off | Off | On | |
| 4220h | On | Off | Off | Off | |
| 4228h | Off | On | On | On | |
SERIAL PORT 1 INTERRUPT SELECTION | ||||||||||
IRQ | E1/A | E1/B | E1/C | E1/D | E1/E | E1/F | E1/G | E1/H | E1/I | |
2 | Closed | Open | Open | Open | Open | Open | Open | Open | Open | |
3 | Open | Closed | Open | Open | Open | Open | Open | Open | Open | |
| » | 4 | Open | Open | Closed | Open | Open | Open | Open | Open | Open |
5 | Open | Open | Open | Closed | Open | Open | Open | Open | Open | |
7 | Open | Open | Open | Open | Closed | Open | Open | Open | Open | |
10 | Open | Open | Open | Open | Open | Closed | Open | Open | Open | |
11 | Open | Open | Open | Open | Open | Open | Closed | Open | Open | |
12 | Open | Open | Open | Open | Open | Open | Open | Closed | Open | |
15 | Open | Open | Open | Open | Open | Open | Open | Open | Closed | |
SERIAL INTERRUPT MODE SELECTION | ||
IRQ | E2 | |
| » | Normal | Pins 1 & 2 closed |
Shared Interrupt mode | Pins 2 & 3 closed | |
None (1K ohm pull-down resistor) | Pins 3 & 4 closed | |
Note: When using two adapters and having them share an IRQ, one must be set in the shared mode and one must be set to include the 1K ohm pull-down resistor. | ||
SERIAL PORT RECEIVE MODE SELECTION | |||
Function | Label | Position | |
| » | RS-485 driver automatically enabled/disabled for receiver circuit | E3 | Pins 1 & 2 closed |
Request to send receiver circuit enabled (RS-485) | E3 | Pins 3 & 4 closed | |
RS-422 enabled for receiver circuit | E3 | Pins 5 & 6 closed | |
SERIAL PORT TRANSMITT MODE SELECTION | |||
Function | Label | Position | |
| » | RS-485 driver automatically enabled/disabled for transmitter circuit | E5 | Pins 1 & 2 closed |
Request to send transmitter enabled (RS-485) | E5 | Pins 3 & 4 closed | |
RS-422 enabled for transmitter circuit | E5 | Pins 5 & 6 closed | |
CONNECTOR PIN ASSIGNMENTS | |
MODE | E4 |
EIA-530 | Pins 1-10 closed |
SIO-485 | Pins 11-20 closed |
LINE TERMINATION | ||
Mode | Label | Position |
120 ohm termination enabled | SW2/1 | On |
120 ohm termination disabled | SW2/1 | Off |
1K ohm pull-down resistor enabled | SW2/2 | On |
1K ohm pull-down resistor disabled | SW2/2 | Off |
| 1K ohm pull-up resistor enabled | SW2/3 | On |
1K ohm pull-up resistor disabled | SW2/3 | Off |
Connect TX+ to RX+ for 2 wire operation (RS-485) | SW2/4 | On |
Connect TX- to RX- for 2 wire operation (RS-485) | SW2/5 | On |
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