3PXOCC1A, 3PXOCC1B IO card Settings and Configuration
B & B ELECTRONICS
3PXOCC1A, 3PXOCC1B
Card Type | Serial |
Chipset | 16550A (3PXOCC1A) 16750 (3PXOCC1B) |
I/O Options | Serial port |
Data Bus | 8/16 bit ISA |
CONNECTIONS | |
Function | Label |
RS-232, RS-422, or RS-485 serial port | J2 |
USER CONFIGURABLE SETTINGS | |||
Setting | Label | Position | |
| » | RS-485 receiver disabled when transmitting | JP3/B | Pins 2 & 3 closed |
RS-485 receiver always enabled | JP3/B | Pins 1 & 2 closed | |
RS-485 transmitter enabled on high RTS only | JP2 | Pins 2 & 3 closed | |
RS-485 transmitter enabled whenever transmission is attempted | JP2 | Pins 1 & 2 closed | |
| » | Serial port clock speed normal | JP5 | Pins 2 & 3 closed |
Serial port clock speed multiplied by 4 | JP5 | Pins 1 & 2 closed | |
SERIAL PORT CONFIGURATION | |||||||
Setting | JP1/A | JP1/B | JP1/C | JP1/D | JP2 | JP3/A | JP3/B |
RS-232 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | N/A | N/A |
RS-422 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | N/A | Pins 1 & 2 | Pins 1 & 2 |
RS-485 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | See note | Pins 2 & 3 | See note |
Note:For correct settings of JP2 and JP3/B for RS-485 mode, see their entries in the User Configurable Settings table. Pins designated are in the closed position. | |||||||
INTERRUPT SELECTION | |||||||
Setting | JP4/A | JP4/B | JP4/C | JP4/D | JP4/E | JP4/F | |
IR/FONT> | Closed | Open | Open | Open | Open | Open | |
IRQ3 | Open | Closed | Open | Open | Open | Open | |
| » | IRQ4 | Open | Open | Closed | Open | Open | Open |
IRQ5 | Open | Open | Open | Closed | Open | Open | |
IRQ6 | Open | Open | Open | Open | Closed | Open | |
IRQ7 | Open | Open | Open | Open | Open | Closed | |
IRQ10 | Open | Open | Open | Open | Open | Open | |
IRQ11 | Open | Open | Open | Open | Open | Open | |
IRQ12 | Open | Open | Open | Open | Open | Open | |
IRQ14 | Open | Open | Open | Open | Open | Open | |
IRQ15 | Open | Open | Open | Open | Open | Open | |
INTERRUPT SELECTION (CON’T) | ||||||
Setting | JP4/G | JP4/H | JP4/I | JP4/J | JP4/K | |
IR/FONT> | Open | Open | Open | Open | Open | |
IRQ3 | Open | Open | Open | Open | Open | |
| » | IRQ4 | Open | Open | Open | Open | Open |
IRQ5 | Open | Open | Open | Open | Open | |
IRQ6 | Open | Open | Open | Open | Open | |
IRQ7 | Open | Open | Open | Open | Open | |
IRQ10 | Closed | Open | Open | Open | Open | |
IRQ11 | Open | Closed | Open | Open | Open | |
IRQ12 | Open | Open | Closed | Open | Open | |
IRQ14 | Open | Open | Open | Closed | Open | |
IRQ15 | Open | Open | Open | Open | Closed | |
SERIAL PORT ADDRESS SELECTION | ||||||||
Setting | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | |
000h | On | On | On | On | On | On | On | |
008h | Off | On | On | On | On | On | On | |
010h | On | Off | On | On | On | On | On | |
018h | Off | Off | On | On | On | On | On | |
020h | On | On | Off | On | On | On | On | |
2E8h (COM4:) | Off | On | Off | Off | Off | On | Off | |
2F8h (COM2:) | Off | Off | Off | Off | Off | On | Off | |
3D8h | Off | Off | On | Off | Off | Off | Off | |
3E0h | On | On | Off | Off | Off | Off | Off | |
3E8h (COM3:) | Off | On | Off | Off | Off | Off | Off | |
3F0h | On | Off | Off | Off | Off | Off | Off | |
| » | 3F8h (COM1:) | Off | Off | Off | Off | Off | Off | Off |
Note: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/7 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/7=512, SW1/6=256, SW1/5=128, SW1/4=64, SW1/3=32, SW1/2=16, SW1/1=8. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0) | ||||||||
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