Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Andrew]

2017-02-21 0:49 GMT+02:00 Peter C. Wallace :


> Assuming you have a 7I80HD-16, 7i80hd_16_svst1_4_7i47s.bit
>
> will give you a config with 4 stepgens, 4 encoders, 1 pwmgen for spindle
> (on GPIO 0..23) and GPIO 24..71 as plain I/O
>

That's what I need, thanks!

No support in pncconf for these boards?
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Peter C. Wallace]

On Tue, 21 Feb 2017, Andrew wrote:

> Date: Tue, 21 Feb 2017 00:26:58 +0200
> From: Andrew <pkm...@gmail.com>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <emc-users@lists.sourceforge.net>
> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
> Subject: Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?
> 
> 2017-02-04 0:09 GMT+02:00 Peter C. Wallace <p...@mesanet.com>:
>
>>>> If its sinking current, yes, you can get 5V swings (so OK for drives
>> with
>>>> common +5 on the Opto inputs) if sourcing, it can only swing to 3.3V or
>> so
>>>> which is not so good.
>>>>
>>>
>>> Good for me, the desired drives have common +5V.
>>>
>>>>
>>>> Note that if you use bare FPGA I/O, a single wiring mistake will ruin
>> your
>>>> day...
>>>>
>>>
>>> Sure, that's a risk...
>>> I would take 7i47S if I needed an analog output... or 7i47 if I needed
>>> encoders.
>>> 7i42TA would do the job either?
>> All would work
>>
>> The 7I42 is just a I/O protector so doesnt change the FPGA drive capability
>> but will protect the FPGA I/O from mistakes up to +-12V
>>
>> Just want to make sure before ordering
> Let's suppose I have 7i80HD and 7i47S.
> I need step/dir/enable for 3 stepper drives routed to 7i47S TX outputs and
> 48 GPIOs on two 50pin connectors.
> Where do I connect 7i47S (P1, P2, P3)? Which firmware do I use?
> Thanks
> --
>
Assuming you have a 7I80HD-16, 7i80hd_16_svst1_4_7i47s.bit

will give you a config with 4 stepgens, 4 encoders, 1 pwmgen for spindle
(on GPIO 0..23) and GPIO 24..71 as plain I/O

Peter Wallace
Mesa Electronics


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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Andrew]

2017-02-04 0:09 GMT+02:00 Peter C. Wallace :

> >> If its sinking current, yes, you can get 5V swings (so OK for drives
> with
> >> common +5 on the Opto inputs) if sourcing, it can only swing to 3.3V or
> so
> >> which is not so good.
> >>
> >
> > Good for me, the desired drives have common +5V.
> >
> >>
> >> Note that if you use bare FPGA I/O, a single wiring mistake will ruin
> your
> >> day...
> >>
> >
> > Sure, that's a risk...
> > I would take 7i47S if I needed an analog output... or 7i47 if I needed
> > encoders.
> > 7i42TA would do the job either?
> All would work
>
> The 7I42 is just a I/O protector so doesnt change the FPGA drive capability
> but will protect the FPGA I/O from mistakes up to +-12V
>
> Just want to make sure before ordering
Let's suppose I have 7i80HD and 7i47S.
I need step/dir/enable for 3 stepper drives routed to 7i47S TX outputs and
48 GPIOs on two 50pin connectors.
Where do I connect 7i47S (P1, P2, P3)? Which firmware do I use?
Thanks
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Andrew]

2017-02-03 23:42 GMT+02:00 Gene Heskett:

> Run the gpio port in .is_output, .open_drain mode, thats two setp
> statements in your hal file, feed your +5 volts to all the stepper
> driver + terminals, and your chosen output pin to the minus terminal of
> the opto input on the stepper.  Duplicate that for direction. Don't
> forget to set the signaling times in the .ini file. It should just work.
> Does on my 7i90HD anyway.
>

Great, thanks for the advice!
I've also purchased 7i90 recently to use with Pi 2.
Haven't touched it yet, though.
Are you satisfied with your Pi / 7i90 set?

Andrew
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Peter C. Wallace]

On Sat, 4 Feb 2017, Andrew wrote:

> Date: Sat, 4 Feb 2017 00:00:11 +0200
> From: Andrew <pkm...@gmail.com>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <emc-users@lists.sourceforge.net>
> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
> Subject: Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?
> 
> 2017-02-03 23:05 GMT+02:00 Peter C. Wallace:
>
>> You need a RS-422 interface to connect a sserial device to the FPGA, so
>> 7I44,
>> 7I52, 7I47, 7I47S, or RS-422 interface chip on a little board like our
>> 485X1
>> for just one channel
>>
>
>
>> But if you only have the OPTO racks and the step/dir pins, you should not
>> need
>> and sserial I/O expansion (unless it makes wiring easier to have the OPTO22
>> interface at some distance from the 7I80)
>>
>
> Yes, I think I don't really need sserial...
>
>
>> If its sinking current, yes, you can get 5V swings (so OK for drives with
>> common +5 on the Opto inputs) if sourcing, it can only swing to 3.3V or so
>> which is not so good.
>>
>
> Good for me, the desired drives have common +5V.
>
>>
>> Note that if you use bare FPGA I/O, a single wiring mistake will ruin your
>> day...
>>
>
> Sure, that's a risk...
> I would take 7i47S if I needed an analog output... or 7i47 if I needed
> encoders.
> 7i42TA would do the job either?
All would work

The 7I42 is just a I/O protector so doesnt change the FPGA drive capability
but will protect the FPGA I/O from mistakes up to +-12V

>
>
> Andrew
> --
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Peter Wallace
Mesa Electronics

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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Andrew]

2017-02-03 23:05 GMT+02:00 Peter C. Wallace:

> You need a RS-422 interface to connect a sserial device to the FPGA, so
> 7I44,
> 7I52, 7I47, 7I47S, or RS-422 interface chip on a little board like our
> 485X1
> for just one channel
>


> But if you only have the OPTO racks and the step/dir pins, you should not
> need
> and sserial I/O expansion (unless it makes wiring easier to have the OPTO22
> interface at some distance from the 7I80)
>

Yes, I think I don't really need sserial...


> If its sinking current, yes, you can get 5V swings (so OK for drives with
> common +5 on the Opto inputs) if sourcing, it can only swing to 3.3V or so
> which is not so good.
>

Good for me, the desired drives have common +5V.

>
> Note that if you use bare FPGA I/O, a single wiring mistake will ruin your
> day...
>

Sure, that's a risk...
I would take 7i47S if I needed an analog output... or 7i47 if I needed
encoders.
7i42TA would do the job either?


Andrew
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Gene Heskett]

On Friday 03 February 2017 15:53:11 Andrew wrote:

> 2017-02-03 22:41 GMT+02:00 Peter C. Wallace:
> > Yes, you can use OPTO22 racks with any of our 50 pin FPGA cards
> > (except the 4I68 since its I/O is not 5V tolerant). If you have a
> > lot of OPTO 22 racks, a
> > 7I90HD can be used as a sserial remote and drive 3x 24 I/O racks
>
> Thanks Peter.
> I looked at 7I69 too, because the machine has 2 extra opto22 racks
> (but they're almost empty).
>
> I guess 7i80hd_16_st12.bit should fit?
> Does it support sserial? How do I connect sserial board to 7i80HD,
> just in case?
>
> Also, is 7i80HD output voltage enough to drive an optocouple in a
> stepper drive?
>
> Andrew

Run the gpio port in .is_output, .open_drain mode, thats two setp 
statements in your hal file, feed your +5 volts to all the stepper 
driver + terminals, and your chosen output pin to the minus terminal of 
the opto input on the stepper.  Duplicate that for direction. Don't 
forget to set the signaling times in the .ini file. It should just work.  
Does on my 7i90HD anyway.


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> most engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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Cheers, Gene Heskett
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Peter C. Wallace]

On Fri, 3 Feb 2017, Andrew wrote:

> Date: Fri, 3 Feb 2017 22:53:11 +0200
> From: Andrew <pkm...@gmail.com>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <emc-users@lists.sourceforge.net>
> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
> Subject: Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?
> 
> 2017-02-03 22:41 GMT+02:00 Peter C. Wallace:
>
>> Yes, you can use OPTO22 racks with any of our 50 pin FPGA cards (except the
>> 4I68 since its I/O is not 5V tolerant). If you have a lot of OPTO 22
>> racks, a
>> 7I90HD can be used as a sserial remote and drive 3x 24 I/O racks
>>
>
> Thanks Peter.
> I looked at 7I69 too, because the machine has 2 extra opto22 racks (but
> they're almost empty).
>
> I guess 7i80hd_16_st12.bit should fit?
> Does it support sserial? How do I connect sserial board to 7i80HD, just in
> case?

You need a RS-422 interface to connect a sserial device to the FPGA, so 7I44, 
7I52, 7I47, 7I47S, or RS-422 interface chip on a little board like our 485X1 
for just one channel

But if you only have the OPTO racks and the step/dir pins, you should not need 
and sserial I/O expansion (unless it makes wiring easier to have the OPTO22 
interface at some distance from the 7I80)
>
> Also, is 7i80HD output voltage enough to drive an optocouple in a stepper
> drive?


If its sinking current, yes, you can get 5V swings (so OK for drives with 
common +5 on the Opto inputs) if sourcing, it can only swing to 3.3V or so 
which is not so good.

Note that if you use bare FPGA I/O, a single wiring mistake will ruin your 
day...

>
> Andrew
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
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>

Peter Wallace
Mesa Electronics

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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Andrew]

2017-02-03 22:41 GMT+02:00 Peter C. Wallace:

> Yes, you can use OPTO22 racks with any of our 50 pin FPGA cards (except the
> 4I68 since its I/O is not 5V tolerant). If you have a lot of OPTO 22
> racks, a
> 7I90HD can be used as a sserial remote and drive 3x 24 I/O racks
>

Thanks Peter.
I looked at 7I69 too, because the machine has 2 extra opto22 racks (but
they're almost empty).

I guess 7i80hd_16_st12.bit should fit?
Does it support sserial? How do I connect sserial board to 7i80HD, just in
case?

Also, is 7i80HD output voltage enough to drive an optocouple in a stepper
drive?

Andrew
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Peter C. Wallace]

On Fri, 3 Feb 2017, Andrew wrote:

> Date: Fri, 3 Feb 2017 22:23:52 +0200
> From: Andrew <pkm...@gmail.com>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <emc-users@lists.sourceforge.net>
> To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
> Subject: Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?
> 
> 2017-01-14 17:20 GMT+02:00 John Thornton <j...@gnipsel.com>:
>
>> The cool thing about the 5/5i24 is you can connect an Opto 22 base to
>> one port and have a lot of I/O.
>>
>
> I encountered a 30-year-old machine with two opto22 boards (24 channels
> each, IDC50 connectors) and 3 steppers.
> So I'm thinking 7i80HD. Should it work as is with the opto22 boards?
>
> Thanks,
> Andrew
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Yes, you can use OPTO22 racks with any of our 50 pin FPGA cards (except the 
4I68 since its I/O is not 5V tolerant). If you have a lot of OPTO 22 racks, a 
7I90HD can be used as a sserial remote and drive 3x 24 I/O racks

Peter Wallace
Mesa Electronics

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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Andrew]

2017-01-14 17:20 GMT+02:00 John Thornton :

> The cool thing about the 5/5i24 is you can connect an Opto 22 base to
> one port and have a lot of I/O.
>

I encountered a 30-year-old machine with two opto22 boards (24 channels
each, IDC50 connectors) and 3 steppers.
So I'm thinking 7i80HD. Should it work as is with the opto22 boards?

Thanks,
Andrew
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[John Thornton]

Hi Les,

You can extend the I/O of a 7i76 
 
or 7i77 
 
with one smart serial card 
 and a cable 
. 
The 7i84 
 
for example gives you 32 inputs and 16 outputs in addition to the 7i76 
or 7i77 I/O.

If you need a lot of I/O then the 7i74 
 
gives you up to 8 smart serial cards for I/O.

JT


On 1/14/2017 6:00 PM, Les Newell wrote:
> Hi JT,
>
> Looking through your website the 7I92 + 7I77 combo looks promising. It
> would definitely work for the mill but I need to check if there are
> enough I/Os for the router. I also have a suspicion the current control
> on the router switches to ground rather than +24.
>
> Les
>
>
> On 14/01/17 15:20, John Thornton wrote:
>> Hi Les,
>>
>> I have both of those in stock at http://mesaus.com/
>>
>> The cool thing about the 5/5i24 is you can connect an Opto 22 base to
>> one port and have a lot of I/O.
>>
>> JT
>
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Les Newell]

Hi JT,

Looking through your website the 7I92 + 7I77 combo looks promising. It 
would definitely work for the mill but I need to check if there are 
enough I/Os for the router. I also have a suspicion the current control 
on the router switches to ground rather than +24.

Les


On 14/01/17 15:20, John Thornton wrote:
> Hi Les,
>
> I have both of those in stock at http://mesaus.com/
>
> The cool thing about the 5/5i24 is you can connect an Opto 22 base to
> one port and have a lot of I/O.
>
> JT


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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[John Thornton]

AFAIK any of them with a 50 pin header.

for example this one 


JT

On 1/14/2017 10:16 AM, Eric Keller wrote:
> On Sat, Jan 14, 2017 at 10:20 AM, John Thornton  wrote:
>> The cool thing about the 5/5i24 is you can connect an Opto 22 base to
>> one port and have a lot of I/O.
> which Opto22 base?
>
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Eric Keller]

On Sat, Jan 14, 2017 at 10:20 AM, John Thornton  wrote:
> The cool thing about the 5/5i24 is you can connect an Opto 22 base to
> one port and have a lot of I/O.

which Opto22 base?

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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[John Thornton]

Hi Les,

I have both of those in stock at http://mesaus.com/

The cool thing about the 5/5i24 is you can connect an Opto 22 base to 
one port and have a lot of I/O.

JT


On 1/13/2017 5:09 PM, Les Newell wrote:
> I have a couple of rebuild projects coming up (a router and a milling
> machine) and I am trying to decide between PCI or Ethernet. I like the
> idea of Ethernet because it will probably be around long after PCIe has
> disappeared but the idea of it running in user space instead of realtime
> makes me a little nervous. Both machines will be using their original
> servo drives connected to 7I33 analog servo interfaces.
>
> Does anyone here have any recommendations?
>
> Les
>
>
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Todd Zuercher]

- Original Message -
> On Fri, Jan 13, 2017 at 3:27 PM, sam sokolik 
> wrote:
> 
> > I have used both.  If you need higher servo thread speeds (>2khz
> > depending on hardware)  Stick with pci/pcie.
> >
> 
> I thought the point of using the Mesa hardware was that it off loaded
> the
> high speed loops from the main computer.  So the servo loop is NOT
> running
> in there FPGA?

An example of a time when you might need a faster servo thread would be running 
torque mode servos.

I am running such a machine.  It is a wood router so sees higher speeds, and 
has torque mode servos.  Linuxcnc is closing both the velocity and servo loops 
with a duel PID arrangement with the velocity loop pid running in a floating 
point base thread running at 5khz.  To do that the Mesa hardware needs to also 
be read/write to at that speed. 

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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Les Newell]

Thanks Sam,

The router's servo drives are old and probably wouldn't gain any benefit 
from going greater than 1kHz. The mill is a bit more up to date but 
again 1kHz is probably enough. It's not a high speed machining centre.

Chris, the hardware does the very fast stuff such as encoder counting 
and PWM generation but the servo loop is done on the PC.

Les

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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[Chris Albertson]

On Fri, Jan 13, 2017 at 3:27 PM, sam sokolik  wrote:

> I have used both.  If you need higher servo thread speeds (>2khz
> depending on hardware)  Stick with pci/pcie.
>

I thought the point of using the Mesa hardware was that it off loaded the
high speed loops from the main computer.  So the servo loop is NOT running
in there FPGA?
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Re: [Emc-users] 6I24 PCI or 7I80 Ethernet?

[sam sokolik]

I have used both.  If you need higher servo thread speeds (>2khz 
depending on hardware)  Stick with pci/pcie.

The matsuura was converted using mesa ethernet.  (7i80+lots of other 
daughter boards)  while configuring the machine - the computer / mesa 
hardware was up for weeks on end - with linuxcnc running.  Not one 
glitch.  Very happy with all of peters hardware.

sam

On 01/13/2017 05:09 PM, Les Newell wrote:
> I have a couple of rebuild projects coming up (a router and a milling
> machine) and I am trying to decide between PCI or Ethernet. I like the
> idea of Ethernet because it will probably be around long after PCIe has
> disappeared but the idea of it running in user space instead of realtime
> makes me a little nervous. Both machines will be using their original
> servo drives connected to 7I33 analog servo interfaces.
>
> Does anyone here have any recommendations?
>
> Les
>
>
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[Emc-users] 6I24 PCI or 7I80 Ethernet?

[Les Newell]

I have a couple of rebuild projects coming up (a router and a milling 
machine) and I am trying to decide between PCI or Ethernet. I like the 
idea of Ethernet because it will probably be around long after PCIe has 
disappeared but the idea of it running in user space instead of realtime 
makes me a little nervous. Both machines will be using their original 
servo drives connected to 7I33 analog servo interfaces.

Does anyone here have any recommendations?

Les


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