DECISION COMPUTER INTERNATIONAL CO., LTD. ========================================= 8 CHANNEL RELAY OUTPUT/PHOTO-ISOLATOR Card Type Data acquisition Chip Set NEC 8255 I/O Options Opto-isolated input and relay control output port Data Bus 8-bit ISA +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Function | Label | |---------------------------------------------------+--------| | Opto-isolated input and relay control output port | CN1 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CN1 PINOUT | |------------------------------------------------------------| | Function | Pin | Function | Pin | |------------------------+-----+-----------------------+-----| | Channel 1 relay open | 1 | Channel 4 relay open | 20 | |------------------------+-----+-----------------------+-----| | Channel 1 relay common | 2 | Channel 4 relay | 21 | | | | common | | |------------------------+-----+-----------------------+-----| | Channel 1 relay closed | 3 | Channel 4 relay | 22 | | | | closed | | |------------------------+-----+-----------------------+-----| | Channel 2 relay open | 4 | Channel 5 relay open | 23 | |------------------------+-----+-----------------------+-----| | Channel 2 relay common | 5 | Channel 5 relay | 24 | | | | common | | |------------------------+-----+-----------------------+-----| | Channel 2 relay closed | 6 | Channel 6 relay open | 25 | |------------------------+-----+-----------------------+-----| | Channel 3 relay open | 7 | Channel 6 relay | 26 | | | | common | | |------------------------+-----+-----------------------+-----| | Channel 3 relay common | 8 | Channel 7 relay open | 27 | |------------------------+-----+-----------------------+-----| | Channel 3 relay closed | 9 | Channel 7 relay | 28 | | | | common | | |------------------------+-----+-----------------------+-----| | Channel 8 relay open | 10 | Ground | 29 | |------------------------+-----+-----------------------+-----| | Channel 8 relay common | 11 | Channel 1 negative | 30 | |------------------------+-----+-----------------------+-----| | Channel 1 positive | 12 | Channel 2 negative | 31 | |------------------------+-----+-----------------------+-----| | Channel 2 positive | 13 | Channel 3 negative | 32 | |------------------------+-----+-----------------------+-----| | Channel 3 positive | 14 | Channel 4 negative | 33 | |------------------------+-----+-----------------------+-----| | Channel 4 positive | 15 | Channel 5 negative | 34 | |------------------------+-----+-----------------------+-----| | Channel 5 positive | 16 | Channel 6 negative | 35 | |------------------------+-----+-----------------------+-----| | Channel 6 positive | 17 | Channel 7 negative | 36 | |------------------------+-----+-----------------------+-----| | Channel 7 positive | 18 | Channel 8 negative | 37 | |------------------------+-----+-----------------------+-----| | Channel 8 positive | 19 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | OPTO-ISOLATION OPTIONS | |------------------------------------------------------------| | Setting | JPxA | JPxB | |------------------------+---------------------+-------------| | Differential signals | Pins 1 & 2 closed | Pins 2 & 3 | | (+ and -) | | closed | |------------------------+---------------------+-------------| | Single-ended signals | Pins 1 & 2 closed | Pins 1 & 2 | | (+ and GND) | | closed | |------------------------+---------------------+-------------| | Single-ended signals, | Pins 2 & 3 closed | N/A | | TTL levels | | | |------------------------------------------------------------| | Note:The exact locations of JP1A through JP8A and | | JP1B through JP8B are unidentified. JP1A and JP1B | | control the opto-isolation functions of channel 1. | | The settings for JP2A through JP8A and JP2B through | | JP8B are identical, controlling channels 2 through 8 | | respectively. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BASE I/O ADDRESS | |------------------------------------------------------------| |Setting |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5|SW1/6|SW1/7|SW1/8| |--------+------+------+------+------+-----+-----+-----+-----| | |000h | On | On | On | On | On | On | On | On | |--+-----+------+------+------+------+-----+-----+-----+-----| | |004h | On | On | On | On | On | On | On | Off | |--+-----+------+------+------+------+-----+-----+-----+-----| | |008h | On | On | On | On | On | On | Off | On | |--+-----+------+------+------+------+-----+-----+-----+-----| | |010h | On | On | On | On | On | Off | On | On | |--+-----+------+------+------+------+-----+-----+-----+-----| | |014h | On | On | On | On | On | Off | On | Off | |--+-----+------+------+------+------+-----+-----+-----+-----| |>> |2A8h | Off | On | Off | On | Off | On | Off | On | |--+-----+------+------+------+------+-----+-----+-----+-----| | |3ECh | Off | Off | Off | Off | Off | On | Off | Off | |--+-----+------+------+------+------+-----+-----+-----+-----| | |3F0h | Off | Off | Off | Off | Off | Off | On | On | |--+-----+------+------+------+------+-----+-----+-----+-----| | |3F4h | Off | Off | Off | Off | Off | Off | On | Off | |--+-----+------+------+------+------+-----+-----+-----+-----| | |3F8h | Off | Off | Off | Off | Off | Off | Off | On | |--+-----+------+------+------+------+-----+-----+-----+-----| | |3FCh | Off | Off | Off | Off | Off | Off | Off | Off | |------------------------------------------------------------| | Note: Over 255 base address settings are available. The| | switches are a binary representation of the decimal | | memory addresses. SW1/1 is the Most Significant Bit and| | switch SW1/8 is the Least Significant Bit. The switches| | have the following decimal values: SW1/1=512, | | SW1/2=256, SW1/3=128, SW1/4=64, SW1/5=32, SW1/6=16, | | SW1/7=8, SW1/8=4. Turn off the switches and add the | | values of the switches that are off to 512 to obtain | | the correct memory address. (Off=1, On=0) | +------------------------------------------------------------+ +------------------------------------------------------------+ | DIAGNOSTIC LED(S) | |------------------------------------------------------------| | The functions of the LEDs are unidentified. | +------------------------------------------------------------+