On 05/27/2016 06:16 PM, Matthew Hubbard wrote: > Hi allI am in the process of doing a retrofit on an old yuasa cnc mill. The > machine has a relay board that i can interface with that executes m codes. > For example if i ground the coil of the relay (momentarily) for the M3 relay, > the spindle latches on, and if i do that for the M5 relay, the spindle > latches off. My current understanding is that by default if I command an M3 > it will hold the M3 signal on until i command an M5, where it turns off > again. Can somebody point me in the right direction of how i can control > on/off with two signals? > Do you really need this latching behavior? Is it safe? It might be easier to remove the latching feature, so that E-stopping the software will shut off the spindle.
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