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# B & B ELECTRONICS
3PXCC1A, 3PXCC1B, 3PXCC2A, 3PXCC2B
Card Type Serial
Chipset 16550A (3PXCC1A, 3PXCC2A)
16750 (3PXCC1B, 3PXCC2B)
I/O Options Serial ports (2 on 3PXCC2A, 3PXCC2B only)
Data Bus 8/16 bit ISA
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|-----------------------+-------+--------------------+-------|
| RS-232, RS-422, or | PORT1 | RS-232, RS-422, or | PORT2 |
| RS-485 serial port 1 | | RS-485 serial port | |
| | | 2 | |
|------------------------------------------------------------|
| Note:PORT2 has no function on models 3PXCC1A and |
| 3PXCC1B. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| » | RS-485 receiver disabled when | JP1/C | Pins 1 & |
| | transmitting on port 1 | | 2 closed |
|---+------------------------------------+-------+-----------|
| | RS-485 receiver always enabled on | JP1/C | Pins 2 & |
| | port 1 | | 3 closed |
|---+------------------------------------+-------+-----------|
| | RS-485 port 1 transmitter enabled | JP1/D | Pins 2 & |
| | on high RTS only | | 3 closed |
|---+------------------------------------+-------+-----------|
| | RS-485 port 1 transmitter enabled | JP1/D | Pins 1 & |
| | whenever transmission is attempted | | 2 closed |
|---+------------------------------------+-------+-----------|
| | RS-422/485 termination enabled on | JP1/E | Pins 2 & |
| | port 1 | | 3 closed |
|---+------------------------------------+-------+-----------|
| | RS-422/485 termination disabled on | JP1/E | Pins 1 & |
| | port 1 | | 2 closed |
|---+------------------------------------+-------+-----------|
| » | Serial port 1 clock speed normal | JP1G | Pins 2 & |
| | | | 3 closed |
|---+------------------------------------+-------+-----------|
| | Serial port 1 clock speed | JP1G | Pins 1 & |
| | multiplied by 4 | | 2 closed |
|---+------------------------------------+-------+-----------|
| » | RS-485 receiver disabled when | JP2/C | Pins 1 & |
| | transmitting on port 2 | | 2 closed |
|---+------------------------------------+-------+-----------|
| | RS-485 receiver always enabled on | JP2/C | Pins 2 & |
| | port 2 | | 3 closed |
|---+------------------------------------+-------+-----------|
| | RS-485 port 2 transmitter enabled | JP2/D | Pins 2 & |
| | on high RTS only | | 3 closed |
|---+------------------------------------+-------+-----------|
| | RS-485 port 2 transmitter enabled | JP2/D | Pins 1 & |
| | whenever transmission is attempted | | 2 closed |
|---+------------------------------------+-------+-----------|
| | RS-422/485 termination enabled on | JP2/E | Pins 2 & |
| | port 2 | | 3 closed |
|---+------------------------------------+-------+-----------|
| | RS-422/485 termination disabled on | JP2/E | Pins 1 & |
| | port 2 | | 2 closed |
|---+------------------------------------+-------+-----------|
| » | Serial port 2 clock speed normal | JP2G | Pins 2 & |
| | | | 3 closed |
|---+------------------------------------+-------+-----------|
| | Serial port 2 clock speed | JP2G | Pins 1 & |
| | multiplied by 4 | | 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 CONFIGURATION |
|------------------------------------------------------------|
|Setting |JP1/A |JP1/B |JP1/C |JP1F/A |JP1F/B |JP1F/C |JP1F/D|
|--------+------+------+------+-------+-------+-------+------|
| RS-232 |Pins 1| N/A | N/A |Pins 2 |Pins 2 |Pins 2 |Pins 2|
| | & 2 | | | & 3 | & 3 | & 3 | & 3 |
|--------+------+------+------+-------+-------+-------+------|
| RS-422 |Pins 2|Pins 2|Pins 2|Pins 1 |Pins 1 |Pins 1 |Pins 1|
| | & 3 | & 3 | & 3 | & 2 | & 2 | & 2 | & 2 |
|--------+------+------+------+-------+-------+-------+------|
| RS-485 |Pins 2|Pins 1| See |Pins 1 |Pins 1 |Pins 1 |Pins 1|
| | & 3 | & 2 | note | & 2 | & 2 | & 2 | & 2 |
|------------------------------------------------------------|
| Note:For correct settings of JP1/C for RS-485 mode, see|
| its entry in the User Configurable Settings table. |
| |
| Pins designated are in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 CONFIGURATION |
|------------------------------------------------------------|
|Setting |JP2/A |JP2/B |JP2/C |JP2F/A |JP2F/B |JP2F/C |JP2F/D|
|--------+------+------+------+-------+-------+-------+------|
| RS-232 |Pins 1| N/A | N/A |Pins 2 |Pins 2 |Pins 2 |Pins 2|
| | & 2 | | | & 3 | & 3 | & 3 | & 3 |
|--------+------+------+------+-------+-------+-------+------|
| RS-422 |Pins 2|Pins 2|Pins 2|Pins 1 |Pins 1 |Pins 1 |Pins 1|
| | & 3 | & 3 | & 3 | & 2 | & 2 | & 2 | & 2 |
|--------+------+------+------+-------+-------+-------+------|
| RS-485 |Pins 2|Pins 1| See |Pins 1 |Pins 1 |Pins 1 |Pins 1|
| | & 3 | & 2 | note | & 2 | & 2 | & 2 | & 2 |
|------------------------------------------------------------|
| Note:For correct settings of JP2/C for RS-485 mode, see|
| its entry in the User Configurable Settings table. |
| |
| Pins designated are in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT SELECTION |
|------------------------------------------------------------|
| Setting | JP3/A | JP3/B | JP3/C | JP3/D | JP3/E | JP3/F |
|----------+--------+--------+-------+-------+-------+-------|
| |IR/FONT>|Pins 1 &| Open | Open | Open | Open | Open |
| | | 2 | | | | | |
|-+--------+--------+--------+-------+-------+-------+-------|
| | IRQ3 | Open |Pins 1 &| Open | Open | Open | Open |
| | | | 2 | | | | |
|-+--------+--------+--------+-------+-------+-------+-------|
|»| IRQ4 | Open | Open |Pins 1 | Open | Open | Open |
| | | | | & 2 | | | |
|-+--------+--------+--------+-------+-------+-------+-------|
| | IRQ5 | Open | Open | Open |Pins 1 | Open | Open |
| | | | | | & 2 | | |
|-+--------+--------+--------+-------+-------+-------+-------|
| | IRQ6 | Open | Open | Open | Open |Pins 1 | Open |
| | | | | | | & 2 | |
|-+--------+--------+--------+-------+-------+-------+-------|
| | IRQ7 | Open | Open | Open | Open | Open |Pins 1 |
| | | | | | | | & 2 |
|-+--------+--------+--------+-------+-------+-------+-------|
| | 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 INTERRUPT SELECTION (CON’T) |
|------------------------------------------------------------|
| Setting | JP3/G | JP3/H | JP3/I | JP3/J | JP3/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 | Pins 1 | Open | Open | Open | Open |
| | | & 2 | | | | |
|---+----------+---------+--------+--------+--------+--------|
| | IRQ11 | Open | Pins 1 | Open | Open | Open |
| | | | & 2 | | | |
|---+----------+---------+--------+--------+--------+--------|
| | IRQ12 | Open | Open | Pins 1 | Open | Open |
| | | | | & 2 | | |
|---+----------+---------+--------+--------+--------+--------|
| | IRQ14 | Open | Open | Open | Pins 1 | Open |
| | | | | | & 2 | |
|---+----------+---------+--------+--------+--------+--------|
| | IRQ15 | Open | Open | Open | Open | Pins 1 |
| | | | | | | & 2 |
|------------------------------------------------------------|
| Note:Pins designated are in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT SELECTION |
|------------------------------------------------------------|
| Setting | JP3/A | JP3/B | JP3/C | JP3/D | JP3/E | JP3/F |
|----------+--------+--------+-------+-------+-------+-------|
| |IR/FONT>|Pins 2 &| Open | Open | Open | Open | Open |
| | | 3 | | | | | |
|-+--------+--------+--------+-------+-------+-------+-------|
| | IRQ3 | Open |Pins 2 &| Open | Open | Open | Open |
| | | | 3 | | | | |
|-+--------+--------+--------+-------+-------+-------+-------|
|»| IRQ4 | Open | Open |Pins 2 | Open | Open | Open |
| | | | | & 3 | | | |
|-+--------+--------+--------+-------+-------+-------+-------|
| | IRQ5 | Open | Open | Open |Pins 2 | Open | Open |
| | | | | | & 3 | | |
|-+--------+--------+--------+-------+-------+-------+-------|
| | IRQ6 | Open | Open | Open | Open |Pins 2 | Open |
| | | | | | | & 3 | |
|-+--------+--------+--------+-------+-------+-------+-------|
| | IRQ7 | Open | Open | Open | Open | Open |Pins 2 |
| | | | | | | | & 3 |
|-+--------+--------+--------+-------+-------+-------+-------|
| | 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 INTERRUPT SELECTION (CON’T) |
|------------------------------------------------------------|
| Setting | JP3/G | JP3/H | JP3/I | JP3/J | JP3/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 | Pins 2 | Open | Open | Open | Open |
| | | & 3 | | | | |
|---+----------+---------+--------+--------+--------+--------|
| | IRQ11 | Open | Pins 2 | Open | Open | Open |
| | | | & 3 | | | |
|---+----------+---------+--------+--------+--------+--------|
| | IRQ12 | Open | Open | Pins 2 | Open | Open |
| | | | | & 3 | | |
|---+----------+---------+--------+--------+--------+--------|
| | IRQ14 | Open | Open | Open | Pins 2 | Open |
| | | | | | & 3 | |
|---+----------+---------+--------+--------+--------+--------|
| | IRQ15 | Open | Open | Open | Open | Pins 2 |
| | | | | | | & 3 |
|------------------------------------------------------------|
| Note:Pins designated are in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 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 | Off | On | Off | Off | Off | On | Off |
| |(COM4:) | | | | | | | |
|--+--------+------+------+------+------+------+------+------|
| | 2F8h | Off | Off | Off | Off | Off | On | Off |
| |(COM2:) | | | | | | | |
|--+--------+------+------+------+------+------+------+------|
| | 3D8h | Off | Off | On | Off | Off | Off | Off |
|--+--------+------+------+------+------+------+------+------|
| | 3E0h | On | On | Off | Off | Off | Off | Off |
|--+--------+------+------+------+------+------+------+------|
| | 3E8h | Off | On | Off | Off | Off | Off | Off |
| |(COM3:) | | | | | | | |
|--+--------+------+------+------+------+------+------+------|
| | 3F0h | On | Off | Off | Off | Off | Off | Off |
|--+--------+------+------+------+------+------+------+------|
|» | 3F8h | Off | Off | Off | Off | Off | Off | Off |
| |(COM1:) | | | | | | | |
|------------------------------------------------------------|
| 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)|
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting |SW2/1 |SW2/2 |SW2/3 |SW2/4 |SW2/5 |SW2/6 |SW2/7 |
|-----------+------+------+------+------+------+------+------|
| | 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 | Off | On | Off | Off | Off | On | Off |
| |(COM4:) | | | | | | | |
|--+--------+------+------+------+------+------+------+------|
|» | 2F8h | Off | Off | Off | Off | Off | On | Off |
| |(COM2:) | | | | | | | |
|--+--------+------+------+------+------+------+------+------|
| | 3D8h | Off | Off | On | Off | Off | Off | Off |
|--+--------+------+------+------+------+------+------+------|
| | 3E0h | On | On | Off | Off | Off | Off | Off |
|--+--------+------+------+------+------+------+------+------|
| | 3E8h | Off | On | Off | Off | Off | Off | Off |
| |(COM3:) | | | | | | | |
|--+--------+------+------+------+------+------+------+------|
| | 3F0h | On | Off | Off | Off | Off | Off | Off |
|--+--------+------+------+------+------+------+------+------|
| | 3F8h | Off | Off | Off | Off | Off | Off | Off |
| |(COM1:) | | | | | | | |
|------------------------------------------------------------|
| Note: A total of 128 base address settings are |
| available. The switches are a binary representation of |
| the decimal memory addresses. SW2/7 is the Most |
| Significant Bit and switch SW2/1 is the Least |
| Significant Bit. The switches have the following |
| decimal values: SW2/7=512, SW2/6=256, SW2/5=128, |
| SW2/4=64, SW2/3=32, SW2/2=16, SW2/1=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)|
+------------------------------------------------------------+