7i76e

That’s what I had previously. I’m not sure where to exactly get the 5v from. Not which jumper to change. I’ll read further and keep trying to see what jumper and where to get it from

does that diagram say to get the 5v from the driver?

Aldenflorio wrote:

That’s what I had previously. I’m not sure where to exactly get the 5v from. Not which jumper to change. I’ll read further and keep trying to see what jumper and where to get it from

does that diagram say to get the 5v from the driver?

 

No. You can't get 5v from the drivers you get it from the mesa card.

From the manual:
LOGIC SECTION POWER
The 7I76E can get its 5V Ethernet, encoder, step/dir and serial interface power from
connector P3 or the on card logic power regulator can be used with unregulated DC power
supplied to TB3. When the on card regulator is used, the maximum power available from
the encoder, serial, and 26 pin expansion connectors is 2A total. If isolation of field power
and logic power is not required, a common 8 to 32VDC power supply can be used for all
7I76E power.

Or TB2 on the card Please see page 14 of the manual
From the manual:
TB2 PIN SIGNAL
1 GND
2 STEP0-
3 STEP0+
4 DIR0-
5 DIR0+
6 +5V THIS IS 5 VOLTS

Do you have a meter if so measure pin 1 to pin 6 you should get 5V
Look at Rods vid time stamp 7 mins and 22mins

I greatly appreciate your help, very much so. I also thank you for all your time and research. I’m having a really hard time understanding all of this and I apologize. I’m not sure what to do I just don’t understand. I’m sorry. I hate to ask again, but I think it’s the only way I can really understand what I have to do. Is there any way you could Video chat for a few minutes just to help me a bit more visually. Again I deeply apologize and appreciate what’s you’re doing.

also, I get 5v from p1 and p6

So my board powered by a 12v power supply actually as well as the pins on the t3 section that require power

Essentially what I’m confused about is where to put the wires and where the come from with the 5v you showed me earlier on the Mesa board

Each mesa stepgen has +5v and -5v for convenience.
As Clive said and as my video says, start with a multimeter. to confirm 5 volts.

5v is confirmed. Between pin 1 to pin 6 reads 5v

Aldenflorio wrote:

5v is confirmed. Between pin 1 to pin 6 reads 5v

So the good news is you don't need to use it to set up step and direction.
Its handy to use if you need 5 volts. 

rodw wrote:

Aldenflorio wrote:

5v is confirmed. Between pin 1 to pin 6 reads 5v
So the good news is you don't need to use it to set up step and direction.
Its handy to use if you need 5 volts. 

Rod am I reading this wrong. Why don't you need 5V when setting up single ended step/dir

With a variant of the DM542, I just connected step+ and step- to pul+ and pul- and the same for dir.
Thats all I've ever done on any stepper driver.
I don't know what you mean by single ended. I assume it involves common signals. There is no place for it in the mesa ecosystem. Leave that to the Mach and grbl afficiondos.

rodw wrote:

With a variant of the DM542, I just connected step+ and step- to pul+ and pul- and the same for dir.
Thats all I've ever done on any stepper driver.
I don't know what you mean by single ended. I assume it involves common signals. There is no place for it in the mesa ecosystem. Leave that to the Mach and grbl afficiondos.

Well I am sorry Rod but you are completely wrong in my opinion there are plenty of drives that can't accept differential inputs.
From the manual:
STEP/DIR INTERFACE
The 7I76E provides five channels of step/dir interface with buffered 5V differential
signal pairs. Each differential pair consists of two complementary 5V outputs. The
differential signals allows reliable signal transmission in noisy environments and can
directly interface with RS-422 line receivers. Step motor drives with single ended inputs
connect to just one of the STEP and DIR signal outputs, that is either the STEP+/DIR+ or
STEP-/DIR- signals, with the unused signals left unconnected at the 7I76E. The input
common signal on drives with single ended inputs connects to the 7I76Es GND or 5VP
pins depending on the drive type.

This is mudding the water for this guy by you saying he does not need 5V

5v is confirmed. Between pin 1 to pin 6 reads 5v

OK you have 5V + on pin 6 on TB2 that's good

connect pin 6 Which is 5v+ to PUL+ and DIR+ on the drive

Connect pin 2 to PUL- on the drive
Connect pin 4 to DIR-

One more thing check the switches on the drive for a start (sw5 set to on sw6 off s7on s8on)this should set the drive to 800 pulses/rev

Just get one axis moving first this is for your X axis

Don't waffle just keep to the facts

One more thing DO NOT Connect any power to P3 (which is 5v power in)