thinking Mesa 5i25, but which daughter card(s)?
- j_e_f_f_williams
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05 Feb 2013 23:09 #29648
by j_e_f_f_williams
thinking Mesa 5i25, but which daughter card(s)? was created by j_e_f_f_williams
Hello,
Converting a 3-axis mill (8x30 table mini-Bridgeport type) to CNC from manual. Have servo motors and working on adding USDigital encoders to them (single ended). To test the motors I have been using some controllers I have that work with them (basic H-bridge controllers) and an Ardrino to send PWM. The controllers take 2 PWM signals for forward & reverse. Not a PWM & direction.
Thinking of using Mesa 5i25 card in my computer control the system.
The question: which daughter card to support encoders with PWM up/down.
7i77 seems popular for servo config but it's a +/- 10V analog board vs PWM. I think I read people using 7i76 as PWM + direction (instead of Step + direction) but that too doesn't help with the dual PWM output and the 7i76 has no encoder inputs
Can I configure pins directly on the 5i25 to do what I want and just isolate the card with a 7i75 breakout board?
Another option I guess is I obtain some controllers that take PWM & direction, if there is a better card combination?
Thanks, Jeff
Converting a 3-axis mill (8x30 table mini-Bridgeport type) to CNC from manual. Have servo motors and working on adding USDigital encoders to them (single ended). To test the motors I have been using some controllers I have that work with them (basic H-bridge controllers) and an Ardrino to send PWM. The controllers take 2 PWM signals for forward & reverse. Not a PWM & direction.
Thinking of using Mesa 5i25 card in my computer control the system.
The question: which daughter card to support encoders with PWM up/down.
7i77 seems popular for servo config but it's a +/- 10V analog board vs PWM. I think I read people using 7i76 as PWM + direction (instead of Step + direction) but that too doesn't help with the dual PWM output and the 7i76 has no encoder inputs
Can I configure pins directly on the 5i25 to do what I want and just isolate the card with a 7i75 breakout board?
Another option I guess is I obtain some controllers that take PWM & direction, if there is a better card combination?
Thanks, Jeff
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05 Feb 2013 23:25 #29649
by PCW
Replied by PCW on topic thinking Mesa 5i25, but which daughter card(s)?
Probably a 7I85S would be the best 5I25 daughtercard for a PWM/encoder setup.
The 7I85S has 4 Step/Dir or PWM/DIr 5V differential output pairs and
4 TTL / Differential encoder inputs so can support 4 axis. It also has one RS-422 port
for I/O expansion
You can use a 7I75 as well but it will have 3.3V signal levels
Note that the HostMot2 PWM generator can do Up/Down mode as well as PWM/Dir
Up/Down mode is mode 2
man hostmot2
The 7I85S has 4 Step/Dir or PWM/DIr 5V differential output pairs and
4 TTL / Differential encoder inputs so can support 4 axis. It also has one RS-422 port
for I/O expansion
You can use a 7I75 as well but it will have 3.3V signal levels
Note that the HostMot2 PWM generator can do Up/Down mode as well as PWM/Dir
Up/Down mode is mode 2
man hostmot2
The following user(s) said Thank You: j_e_f_f_williams
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- j_e_f_f_williams
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06 Feb 2013 02:17 #29662
by j_e_f_f_williams
Replied by j_e_f_f_williams on topic thinking Mesa 5i25, but which daughter card(s)?
Thanks, I only noticed the RS-422 output options of the non-S version of the card so missed that option.
I also need:
- I/O ports for e-stop, limits etc
- 0-10V output to control spindle
- encoder inputs for manual job encoders for axis
So I believe I could use a 7i77 on the other 5i25 port to provide more encoder inputs and +/-10V outputs. 7i77 might be overkill for my needs but when I tried to get the required in/out from RS-422 cards it was more $ anyhow.
If anyone sees an error in my thinking please let me know
Thanks, Jeff
I also need:
- I/O ports for e-stop, limits etc
- 0-10V output to control spindle
- encoder inputs for manual job encoders for axis
So I believe I could use a 7i77 on the other 5i25 port to provide more encoder inputs and +/-10V outputs. 7i77 might be overkill for my needs but when I tried to get the required in/out from RS-422 cards it was more $ anyhow.
If anyone sees an error in my thinking please let me know
Thanks, Jeff
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06 Feb 2013 02:58 #29667
by PCW
Replied by PCW on topic thinking Mesa 5i25, but which daughter card(s)?
I would use a 5I25/7I85S/7I84. This would give you 4 encoder inputs
(plus 2 more MPG inputs on the 7I84 if needed) 16 outputs and 32 inputs
you could add a PWM-voltage converter for the Spindle (SPINX1)
(plus 2 more MPG inputs on the 7I84 if needed) 16 outputs and 32 inputs
you could add a PWM-voltage converter for the Spindle (SPINX1)
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16 Feb 2013 22:31 #30191
by j_e_f_f_williams
Replied by j_e_f_f_williams on topic thinking Mesa 5i25, but which daughter card(s)?
Hello,
I have my cards. quick easy service!
Is it correct that my only option is to roll my own HAL config for the 5i25 + 7i85S combo?
PncConf isn't an option as I can't seem to find the XML and PIN files that have a firmware setting which include 7i85S. Interestingly I found if I included the 5i25 directory but no XML/PIN files in it I could continue PncConfig a certain amount and everything looked correct BUT I couldn't save the config as I got PncConfig confused.
I was thinking one of the reasons to use Mesa boards was the easier start-up config as you could use PncConf but I guess that is only for certain combinations.
Thanks, Jeff
I have my cards. quick easy service!
Is it correct that my only option is to roll my own HAL config for the 5i25 + 7i85S combo?
PncConf isn't an option as I can't seem to find the XML and PIN files that have a firmware setting which include 7i85S. Interestingly I found if I included the 5i25 directory but no XML/PIN files in it I could continue PncConfig a certain amount and everything looked correct BUT I couldn't save the config as I got PncConfig confused.
I was thinking one of the reasons to use Mesa boards was the easier start-up config as you could use PncConf but I guess that is only for certain combinations.
Thanks, Jeff
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16 Feb 2013 23:40 - 16 Feb 2013 23:43 #30192
by shayloco
I'm in the same position: 5i25 + 7i85S + 7i78 cards.
Hope someone has an XML file for the 7i85S otherwise will be slogging it out with the config files.
-Larry
Replied by shayloco on topic thinking Mesa 5i25, but which daughter card(s)?
Hello,
Is it correct that my only option is to roll my own HAL config for the 5i25 + 7i85S combo?
I'm in the same position: 5i25 + 7i85S + 7i78 cards.
Hope someone has an XML file for the 7i85S otherwise will be slogging it out with the config files.
-Larry
Last edit: 16 Feb 2013 23:43 by shayloco. Reason: typo, should have been 7178 not 7176
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17 Feb 2013 00:53 #30195
by shayloco
Replied by shayloco on topic thinking Mesa 5i25, but which daughter card(s)?
I just wrote an XML file for the 7i85S_7i78 and pncconf appears to recognize it.
I'll do a little testing and then post it and a 7i85S XML file.
-Larry
I'll do a little testing and then post it and a 7i85S XML file.
-Larry
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17 Feb 2013 18:31 #30214
by shayloco
Replied by shayloco on topic thinking Mesa 5i25, but which daughter card(s)?
I posted the 7i85S.xml file over in the Pncconf section of the forum.
www.linuxcnc.org/index.php/italian/forum...183-mesa-5i25--7i85s
-Larry
www.linuxcnc.org/index.php/italian/forum...183-mesa-5i25--7i85s
-Larry
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01 May 2013 05:10 - 01 May 2013 05:12 #33468
by bogie6040
Replied by bogie6040 on topic thinking Mesa 5i25, but which daughter card(s)?
Hope this is the right place to post this....
I have a setup at work I'm trying to get going - it is 3 BLDC servos driven from some dedicated hardware for them, using a Vishay Si9979 controllers.
I purchased the 5i25 / 7i85S / 7i84 combo that PCW recommended earlier.... The only XML file posted for the 7i85S does not seem to work for me as I need PWM and DIR outputs. I planned on using the 7i84 for servo enable, limit switches and machine control (E-stop, etc.)
Is there a file somewhere for this set up or can someone point me to the information to write an XML file??
Thanks
I have a setup at work I'm trying to get going - it is 3 BLDC servos driven from some dedicated hardware for them, using a Vishay Si9979 controllers.
I purchased the 5i25 / 7i85S / 7i84 combo that PCW recommended earlier.... The only XML file posted for the 7i85S does not seem to work for me as I need PWM and DIR outputs. I planned on using the 7i84 for servo enable, limit switches and machine control (E-stop, etc.)
Is there a file somewhere for this set up or can someone point me to the information to write an XML file??
Thanks
Last edit: 01 May 2013 05:12 by bogie6040.
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01 May 2013 06:02 #33469
by PCW
Replied by PCW on topic thinking Mesa 5i25, but which daughter card(s)?
in www.mesanet.com/software/parallel/5i25.zip
/configs/hostmot2/7i85spx2.xml should be close
/configs/hostmot2/7i85spx2.xml should be close
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