Mesa / HostMot
22 May 2013 23:16 #34549
by eslavko
Replied by eslavko on topic Mesa / HostMot
So As I understand the 7i43 and 5i25 can both have 6 steppers, and are both supported in LinuxCNC. The 7i43 has more 'spare' pins but is EPP based (and probably slower than PCI)
If I understand correctly in 5i25 I can have 5 steppers on one port. On the other one port Is it possible to have just one stepper (instead 5) and keep other pins for general io (limits / home etc)
If I understand correctly in 5i25 I can have 5 steppers on one port. On the other one port Is it possible to have just one stepper (instead 5) and keep other pins for general io (limits / home etc)
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22 May 2013 23:16 #34550
by andypugh
The 5i25 does have a second header, though, to which you can attach (for example) a 7i78 for 4 more stepper channels.
I am perfectly happy with the 7i43 on my mill/lathe and there are still slightly more options for the 50-pin header style cards than for the DB25 style (resolvers, for example)
Replied by andypugh on topic Mesa / HostMot
Ah, yes, sorry. My mistake.The 7I76 provides five channels of step/dir interface with buffered 5V differential.
The 5i25 does have a second header, though, to which you can attach (for example) a 7i78 for 4 more stepper channels.
I am perfectly happy with the 7i43 on my mill/lathe and there are still slightly more options for the 50-pin header style cards than for the DB25 style (resolvers, for example)
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22 May 2013 23:20 #34552
by andypugh
The "extra" IO is serial-connected so the whole lot only uses 2 of the 25 pins.
Replied by andypugh on topic Mesa / HostMot
Yes, though as the 7i76 offers quite a lot of protected IO on-board there may be no need to use unused stepper pins for IO.If I understand correctly in 5i25 I can have 5 steppers on one port. On the other one port Is it possible to have just one stepper (instead 5) and keep other pins for general io (limits / home etc)
The "extra" IO is serial-connected so the whole lot only uses 2 of the 25 pins.
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22 May 2013 23:38 #34554
by PCW
Replied by PCW on topic Mesa / HostMot
If you use your own breakout board you can have as many as 8 stepgens (16 pins)
on one 5I25 connector (and 17 free I/O on the other)
Just depends on what you want
on one 5I25 connector (and 17 free I/O on the other)
Just depends on what you want
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22 May 2013 23:44 #34555
by eslavko
Replied by eslavko on topic Mesa / HostMot
And this is supported by LinuxCnc?
For example 6x stepper (12 pins) and 5 pins as general IO is possible on same connector of 5i25? (Under LinuxCnc)
For example 6x stepper (12 pins) and 5 pins as general IO is possible on same connector of 5i25? (Under LinuxCnc)
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22 May 2013 23:57 - 23 May 2013 00:22 #34558
by PCW
Replied by PCW on topic Mesa / HostMot
Sure.
Any combination of supported modules (stepgens, pwmgens, encoders, SPI, sserial, etc)
on any available pins is supported by the driver. This is because the driver reads which
modules and how many of each are installed, and the configuration pinout from the
FPGA during initialization.
Only real limitations are numbers of pins and whether the configuration will fit in the FPGA
Any combination of supported modules (stepgens, pwmgens, encoders, SPI, sserial, etc)
on any available pins is supported by the driver. This is because the driver reads which
modules and how many of each are installed, and the configuration pinout from the
FPGA during initialization.
Only real limitations are numbers of pins and whether the configuration will fit in the FPGA
Last edit: 23 May 2013 00:22 by PCW. Reason: expand
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23 May 2013 00:31 #34559
by eslavko
Replied by eslavko on topic Mesa / HostMot
[quote="PCW" post=34558
Only real limitations are numbers of pins and whether the configuration will fit in the FPGA[/quote]
Well how to find out if it works before buy the card?
6xStepper (1x spindle speed input/PWM output) and all other general IO?
How I can check if fit on fpga?!?
Only real limitations are numbers of pins and whether the configuration will fit in the FPGA[/quote]
Well how to find out if it works before buy the card?
6xStepper (1x spindle speed input/PWM output) and all other general IO?
How I can check if fit on fpga?!?
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23 May 2013 00:38 #34560
by PCW
Replied by PCW on topic Mesa / HostMot
Since the 7i76x2 config fits (10 stepgens, 4 sserial channels
(including embedded processor/RAM/ROM)
6 stepgens, 1 PWM and the rest GPIO will probably be less than 1/2 the FPGA
(including embedded processor/RAM/ROM)
6 stepgens, 1 PWM and the rest GPIO will probably be less than 1/2 the FPGA
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03 Jun 2013 16:01 #35170
by eslavko
Replied by eslavko on topic Mesa / HostMot
Ok I decide the 7i43 is probably best for me...
Now I got stumbled of subversions.
In datasheet I found there are 7i43-4 and 7i43-P4 (I prefer 400k gates to be safe for some strange configurations), but on the european reseller I found just 7i43-U-4. And text and photos are not clear. So is that only USB or have EPP too. (on one photo there is no EPP connector). In mesa webpage I can't find nothing about U4 version.
Now I got stumbled of subversions.
In datasheet I found there are 7i43-4 and 7i43-P4 (I prefer 400k gates to be safe for some strange configurations), but on the european reseller I found just 7i43-U-4. And text and photos are not clear. So is that only USB or have EPP too. (on one photo there is no EPP connector). In mesa webpage I can't find nothing about U4 version.
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03 Jun 2013 16:06 #35171
by andypugh
The Mesa price list seems to make it fairly clear:
7I43H Anything I/O High speed USB - 400K FPGA
7I43-P Anything I/O parallel only - 200K FPGA
7I43-U Anything I/O USB/parallel - 200K FPGA
7I43-U-4 Anything I/O USB/parallel - 400K FPGA
You need to check that your parallel port is capable of EPP mode to use a 7i43.
Replied by andypugh on topic Mesa / HostMot
So is that only USB or have EPP too. (on one photo there is no EPP connector). In mesa webpage I can't find nothing about U4 version.
The Mesa price list seems to make it fairly clear:
7I43H Anything I/O High speed USB - 400K FPGA
7I43-P Anything I/O parallel only - 200K FPGA
7I43-U Anything I/O USB/parallel - 200K FPGA
7I43-U-4 Anything I/O USB/parallel - 400K FPGA
You need to check that your parallel port is capable of EPP mode to use a 7i43.
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