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Do you have a 12-24v power supply plugged into the middle 2 screw terminals on the right hand side?.Quote:
Originally Posted by Mikes Planes
If not, that is your problem. Inputs are powered by this. Only the outputs use the 5v power.
They are 2 separate circuits.
Around a 2Amp supply should be plenty.
Missing out this power supply is a common problem.
Hi,
Sorry foe being so long to say thank you all in last post now working. Sorry stiil have problems. I have wired all axis up but Z only go's up I have tried plugs and pin and also looked in Homing and limits no luck.
Mike
Broken wire or pin between controller and driver DIR terminal?.Quote:
Originally Posted by Mikes Planes
Controlling the stepper DIR simply works by switching the 5v on or off to the drive DIR terminal. So a broken wire is the first place I'd start.
Hi
Thanks for that.
If I put the Z axis on to the Y axis on the board it works perfectly does this mean there is somthing wrong with the board???
Mike
If you are absolutely sure you have the correct pin numbers for the Dir pin and when you replace the wiring and it still doesn't work then yes it's a good indication there is something wrong with the Dir output pin.Quote:
Originally Posted by Mikes Planes
Highly likely you have the wrong pin number if it's the first time using it, but if it was working before with this pin number then most probably dead output.!
Hi I have just changed boad with a spare I have and get same results.
When you say pin is this the output on the parallel por lead??
Mike
Hi Just put the Y axis on the X axis and get the same problem only driving in one direction??
Mike
Ah didn't realize you were using the parallel port. Well in that case then if it does it with both boards and you are sure the pin number is correct it most likely will be a faulty cable. The cable must be what's called a Null modem cable, which basically means that each pin goes to the same numbers at each end of the cable. Some cables cross over ie: pin1 to pin 10 at the other end. This is easily checked with a multimeter continuity test.Quote:
Originally Posted by Mikes Planes
Check the wiring, check the pin numbers, check the cable, and after this then difficult to say without being in front of the machine. Personally, I would get rid of the parallel port and upgrade to an Ethernet-based controller as the parallel port is a dinosaur.!Quote:
Originally Posted by Mikes Planes
You need a multimeter ideally.
First check.
End to end on your parallel cable for continuity and that the pin numbers end to end all match.
If that checks out then next check.
Get the bob with nothing connected except for the parallel cable and 5v power.
Put -negative meter terminal onto bob board pc-GND pin.
Then use the +positive terminal on the output pins.
Test each pin one by one by setting it as an output for M8 coolant relay in Mach3 outputs and relay on spindle page.
So start with say P2. Set output# as P2, set spindle M8 relay as selected output#. Put positive probe on P2, (neg to pc GND). Now M8 on/off toggle in Mach3 will show either 5v or 0v on the meter if bob output Pin is working properly.
Just change selected Mach output P number as you go along.
If bob Pin not working it will either show 0v or 5v permanent regardless of on/off toggle.
If parallel cable checked OK then output fault is either bob or pc port itself. If both bob's do the sane it's the pc port.
Hi
The lead is the one I have always used. Where do I find out what pins to use is there a list???
Mike
Hi Thank so much as always great help.
I have done all in last post and all is well but not sure on the lead so I have sent for a new one.
I would like to put my suds on a relay but I don't see where to connect it other the P16/P17. I have attached a copy of a relay board I have but don't see were VCClead go's on my BOB?? or if I use the one on the BOB were the power to the pump comes from??
Mike
Sorry here is the attachmentAttachment 31153
Your 5v VCC output on those 5axis type bobs is marked PC5V. your 5v GND is marked PCGND.Quote:
Originally Posted by Mikes Planes
If using the on-board spindle relay, you cannot use P17 as an output. There is a jumper on the bob to switch P17 to either on-board relay use or Pin use.
I had:
P1= 0-10v Analog.
P2,3,4,5,6,7,8,9= 4 axis.
P10= estop:
P11,12,13,15= limit/probe.
P14= axis enable.
P16= suds coolant.
P17= spindle on/off.
That filled it.
Then needed more I/O so I upgraded to a UC300eth.
So am I right if I connect Bule on attached to P16 and P17 then red to pc5v?? were does the 220v come fromto drive the pump? I take it that the two brown wires are the on off switch but do they come fromthe pump or via a 220v feed?
Mike
One of the wires goes in and out of COM/NC on the side that gets switched.Quote:
Originally Posted by Mikes Planes
Example:
220v+ve goes from feed+ to the pump 220v+ve.
220v-ve goes from feed- into COM, then NC out to pump 220-ve.
So the relay will turn it on/off on the low (-ve) side this way.
Hi
I now have a new lead and as before the Y axis only moves in one direction? If I chane position on bob then it is OK.
I have spent alot of money on this rebuild and time but dont seem to be getting any were with it. the limit switches only work intermitantly??
Mike
Could be the parallel port on the pc has gone then.Quote:
Originally Posted by Mikes Planes
I would get a voltmeter onto the bob.
Put the +ve end on pc5v, put the -ve end on the dir pin.
Then toggle active low/high you should see it alternate between 5v (ish) and 0v (I/O for cw or ccw, that's how it works).
If you see no change, then the signal on that pin isn't working. So is either bob or port.
Ideally. The best way to test a pport is: you want to get a screw terminal board for your Parallel cable so you can test pport signal directly. Plug one end of cable into port/ other end into screw terminal board header.
(If your hands are steady you may be able to just do this by touching the pins on the pport itself but: don't slip!.)
Put the +ve probe end onto the output pin you want to test, put -ve end onto any GND pin 18-25.
Set a flood coolant relay to that output number. Now when you turn coolant on/off you should see voltage changes on the pin you set. If port isn't working you will see no change.
Then you should know where your at with it and go from there.