Last edited by AndrewMawson 03-01-2017 at 02:59 PM. Your ongoing hand holding would be appreciated :)
(In the Spindle page of Config there is an area referring to mist and flood coolant and relay control via M07 and M08 and mapping to output signals in the range of 1-6 and I suspect perhaps it's something to do with the set up here, but I'm not quite getting there at the moment !!!) Ideally I want to turn the relay on when the cut starts, and turn it off a predetermined time after the cut ceases, but just to turn it on and off would be nice :)Ī/ My plasma torch is turned ON by an M03 and OFF by an M05ī/ On the BOB if I set DIP switch 5 then my relay pulses on and off with a mark space ratio controlled by the two trim pots.Ĭ/ If I set DIP switch 2 to ON which should change control to LPT Port 1 Pin 14 I can find no M code that controls Pin 14ĭ/ In the Ports and Pins page of Config there is a line labelled OUTPUT 3 which I have set to Port 1 Pin 14 - this has enabled a switch box marked "Output 3" on screen that previously was not active - I can now click it and change it from Red to Green but other than that it has seemingly no other effect However I'm failing to understand the (to me) obscurities of the manual for the BOB (attached) - I'm no MACH-3 expert and would ask if anyone who has more MACH-3 experience could interpret what they are saying re: the relay outputs as there seem to be too many perms and comms for my poor old brain to understand.
I have added an 'under hood' and huge downdraught fan as a direct crib of DaveK0974's design (with his permission) and now I want to control the fan via MACH3 - the BOB has three uncommitted relay outputs, one of which I've connected to drive a beefier relay to control the fan (65 cu M / Min !!!)
It all works very well, and I have re-housed his existing AM882 stepper drivers and Purelogic (Russian) Ethernet to Parallel, and BOB and torch height controller in a more robust manner - it all still works (phew!) I am re-vamping a plasma table that I bought from a chap who scratch built it.