IR104 Relay / Optoisolator PC/104 Board User Manual
Contents
1. through a 2x20 pin header CN3 at the top of the board Pin 1 is on the left There is no difference between the A and B connection since the inputs are not polarity sensitive IntA In1B In2A In2B In3A In3B In4A In4B InSA IndB In6A In B In7A In7B In8 A In8B In9A In 9 B In 10A In 10 B In11A In 11B In 12A In 12 B In 13A In 13 B In 14A In 14 B In 15A In 15 B In 16 A In 16 B In 17A In 17 B In 18 A In 18 B In 19A In 19 B In 20 A In 20 B Relay outputs Realys are on 1x20 detachable screw terminal headers CN1 on the left side of the board handles relays 1 10 while CN2 on the right side handles relays 11 20 The relay numbers are marked next to each relay so you can identify each relay and its associated screw terminals Pin 1 on both screw terminals is the pin nearest the PC 104 connector i e each terminal pinout is reversed with respect to the other The drawings below indicate the pinouts according to their actual board orientation There is no difference between the A and B connection since the relays are not polarity sensitive All connections are NO normally open CN2 Relay 10 B CN3 End Relay 20 B Relay 10 A Relay 20 A Relay 9B Relay 19B Relay 9A Relay 19 A Relay 8B Relay 18 B Relay 8A 15 Relay 18 A Relay 7 B 14 Relay 17 B Relay 7 A 13 Relay 17 A Relay 6 B 12 Relay 16 B Relay 6 A 11 Relay 16 A Relay 5 B Relay 15 B Relay 5 A 9 Relay 15 A Relay 4 B 8 Relay 14B Relay 4 A Relay 12. 4 A Relay 3 B 6 Relay 13 B Relay 3 A 5 Relay 13 A Relay 2 B 4 Relay 12 B Relay 2 A PC 104 3 Relay 12A Relay 1 B Connector Relay 11 B Relay 1 A End Relay 11 A IR104 programming information doc Diamond Systems Corp www diamondsystems com 5 PROGRAMMING EXAMPLES Example 1 Turn on a relay Current state of relays 1 8 is relays 1 4 on relays 5 8 off Turn relay 8 on Current data value at Base 0 is 00001111 15 To turn on relay 8 we need to set bit 7 to 1 Relay 8 bit 7 10000000 128 New data value 128 OR 15 143 10001111 Write 143 to Base 0 to turn on relay 8 and keep relays 1 4 on 5 7 off Example 2 Turn off a relay Current state of relays 1 8 is relays 1 4 and 8 on relays 5 7 off Turn relay 3 off Current data value at Base 0 is 10001111 143 To turn off relay 3 we need to clear bit 2 Relay 3 bit 2 00000100 4 New data value 143 AND NOT 4 139 10001011 Write 139 to Base 0 to turn off relay 3 and keep relays 1 2 4 and 8 on 5 6 and 7 off IR104 programming information doc Diamond Systems Corp www diamondsystems com
3. IR104 Relay Optoisolator PC 104 Board User Manual Revised 12 02 1 1 0 ADDRESS SELECTION IR104 occupies 8 addresses in I O memory of which 6 are used The address is selected with jumpers JP1 and JP2 The pins listed under each jumper block are the pins that must be shorted with a jumper for the In position On each jumper block pin 1 is on the left and pin 3 is on the right Note that on JP1 pins 1 and 2 are used but pin 3 is never used On JP2 pins 2 and 3 are used but pin 1 is never used Address JP1 JP2 Hex Decimal pins 1 and 2 pins 2 and 3 240 576 Out Out 260 608 Out In 280 640 In Out 300 768 In In 2 1 0 MAP Base Write Function Read Function 0 Relays 1 8 Read back value Relays 9 16 Read back value Relays 17 20 Read back value Opto inputs 1 8 Opto inputs 9 16 Opto inputs 17 20 NOOA ON gt 1 i 3 REGISTER BIT ASSIGNMENTS Addr Operation D7 D D5 D4 p3 D2 m Do 0 Read Write 1 Read Write 2 ReadWrite o o o f o RLY20 RLY19 RLY18 RLY17 3 NotUsed To ft 4 Readonly 5 Read only 6 Readony o o o o N m9 as m17 7 Notused Co o Definitions Rly1 Rly20 Relay outputs 1 on 0 Off In1 In20 Optoisolator inputs 1 off 0 on x Bit not used 0 Bit reads back as a 0 IR104 programming information doc Diamond Systems Corp www diamondsystems com 4 1 0 HEADER PINOUTS Optocoupler inputs Optocouplers are accessed
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