| Function | 0R | 1R | 2R:001 | 010 | 011 | 100 | 101 | 110 | 111 |
|---|---|---|---|---|---|---|---|---|---|
| 0000 clear | Q+,Q- | ||||||||
| 0001 AND | N/A | COM1-COM2 | COM1-COM2 NO1-NO2 |
NO1-NO2 | |||||
| 0010 AB' | N/A | NC2-NO1 | NC2-NO | NC-NO1 COM-NO1 |
|||||
| 0011 pass A | N/A | COM-NO | COM1-NO | NC1-NO | COM1-NO | COM1-NO | |||
| 0100 BA' | N/A | NC1-NO | NC-NO2 COM-NO2 |
||||||
| 0101 pass B | N/A | COM-NO | NC2-COM2 | COM2-NO2 | |||||
| 0110 XOR | N/A | NC1-NC2 | NC-NO | ||||||
| 0111 OR | N/A | COM-NO | COM-NO | ||||||
| 1000 NOR | N/A | NC1-NC2 | COM1-COM2 | ||||||
| 1001 XNOR | N/A | COM1-COM2 | |||||||
| 1010 not B | N/A | COM-NC | COM-NC2 | COM2-NC | COM2-NC COM2-NO |
||||
| 1011 B+A' | N/A | ||||||||
| 1100 not A | N/A | COM-NC | NC1-COM1 | COM-NC1 | COM1-NC | COM1-NC COM1-NO |
|||
| 1101 A+B' | N/A | ||||||||
| 1110 NAND | N/A | COM-NC | COM-NC | ||||||
| 1111 mark | Q+-Q- | N/A |
The 0R column indicates the connections required to make the logic gate in the given row, with no relays. Clear can be made by leaving Q+ and Q- disconnected, while mark can be made by connecting Q+ and Q-. No other gates can be made in this way, since there are no inputs.
The 1R column is for gates which can be made using a 1-input function. The listed contacts are where the output is read from (named Q+ and Q-). The single input comes from the coil.
The 2R columns (000-111) specify the dual-relay configuration needed to make the specified logic gate. 000 through 111 are the wiring connections (NC COM NO) that should be interconnected - for example 101 means connect each relay's NC together, connect their NO's together, but leave COM unconnected. The table data has the points at which the output may be read from (in the form of an open or closed circuit, as with 1R). There may be multiple configurations which make the same gate.
So far the dual-relay configuration for A+B' and B+A' has not been found.
Modified Sun Mar 25 08:48:47 2007
generated Sun Mar 25 08:56:33 2007
http://jeff.tk/relaylogic/rlogic.html