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 | JP3/B | Pins 2 & | | | transmitting | | 3 closed | |---+------------------------------------+-------+-----------| | | RS-485 receiver always enabled | JP3/B | Pins 1 & | | | | | 2 closed | |---+------------------------------------+-------+-----------| | | RS-485 transmitter enabled on high | JP2 | Pins 2 & | | | RTS only | | 3 closed | |---+------------------------------------+-------+-----------| | | RS-485 transmitter enabled | JP2 | Pins 1 & | | | whenever transmission is attempted | | 2 closed | |---+------------------------------------+-------+-----------| |>> | Serial port clock speed normal | JP5 | Pins 2 & | | | | | 3 closed | |---+------------------------------------+-------+-----------| | | Serial port clock speed multiplied | JP5 | Pins 1 & | | | by 4 | | 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | SERIAL PORT CONFIGURATION | |------------------------------------------------------------| | Setting | JP1/A |JP1/B |JP1/C |JP1/D | JP2 |JP3/A |JP3/B | |---------+---------+------+------+------+-----+------+------| | RS-232 |Pins 2 & |Pins 2|Pins 2|Pins 2|Pins | N/A | N/A | | | 3 | & 3 | & 3 | & 3 |2 & 3| | | |---------+---------+------+------+------+-----+------+------| | RS-422 |Pins 1 & |Pins 1|Pins 1|Pins 1| N/A |Pins 1|Pins 1| | | 2 | & 2 | & 2 | & 2 | | & 2 | & 2 | |---------+---------+------+------+------+-----+------+------| | RS-485 |Pins 1 & |Pins 1|Pins 1|Pins 1| See |Pins 2| See | | | 2 | & 2 | & 2 | & 2 |note | & 3 | 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 | 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)| +------------------------------------------------------------+