Mesa 7i97T + 7i84 + 7i78 configuration
- JB-Motoring
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19 Feb 2025 10:46 #321972
by JB-Motoring
Mesa 7i97T + 7i84 + 7i78 configuration was created by JB-Motoring
Hey guys,
it's been a while since my last post.
I am currently working on retrofitting a DMG 50 with analog +-10V Simodrives.
The Mesa's for this project are already laying on my desktop.
I am coming from 7i92 + 7i77, so many tutorials for these builds. Now with the 7i97T i am kinda lost when it comes to flashing.
I need a bin file for the combination :
7i97T
7i84 - over TB4 (ethernet)
7i78 - over P2
Can anyone bring some light into this? Or already used this combination?
The 7i78 is "only" for backup if more encoders are needed- so maybe I can start the config without it.
Thanks in advance for any help guys
)
BR Joel
it's been a while since my last post.

I am currently working on retrofitting a DMG 50 with analog +-10V Simodrives.
The Mesa's for this project are already laying on my desktop.
I am coming from 7i92 + 7i77, so many tutorials for these builds. Now with the 7i97T i am kinda lost when it comes to flashing.
I need a bin file for the combination :
7i97T
7i84 - over TB4 (ethernet)
7i78 - over P2
Can anyone bring some light into this? Or already used this combination?
The 7i78 is "only" for backup if more encoders are needed- so maybe I can start the config without it.
Thanks in advance for any help guys

BR Joel
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19 Feb 2025 12:33 #321978
by JT
Replied by JT on topic Mesa 7i97T + 7i84 + 7i78 configuration
The smart serial card does not need firmware. The 7i97t_7i78d.bin firmware is what you want and you can flash it with the
Mesa Configuration Tool
.
JT
JT
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19 Feb 2025 15:05 #321992
by JB-Motoring
Replied by JB-Motoring on topic Mesa 7i97T + 7i84 + 7i78 configuration
Hey JT,
thanks mate! I finally got it "running".
I will try some things tomorrow. What do I have to modify in the HAL to accept the 7i78? Or is it working already?
Thanks!!
BR
thanks mate! I finally got it "running".
I will try some things tomorrow. What do I have to modify in the HAL to accept the 7i78? Or is it working already?

Thanks!!
BR
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20 Feb 2025 07:59 #322037
by JB-Motoring
Replied by JB-Motoring on topic Mesa 7i97T + 7i84 + 7i78 configuration
So coming to the next "problem"....
The machine uses Heidenhain LS486 Linear scales (XYZ) and RON285 rotary encoders (A/
.
What would be the best way to get that signal into the MESA?
Buying 5 IBV boxes?
Thanks guys!
BR
The machine uses Heidenhain LS486 Linear scales (XYZ) and RON285 rotary encoders (A/

What would be the best way to get that signal into the MESA?
Buying 5 IBV boxes?
Thanks guys!
BR
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21 Feb 2025 10:00 #322187
by JB-Motoring
Replied by JB-Motoring on topic Mesa 7i97T + 7i84 + 7i78 configuration
Hey guys,
so I got Linuxcnc running- And I would like to test all i o 's on the bench before moving to the machine.
As soon as I hit enable (F1/F2) all assigned Analog Outputs show -10V.
There is no encoder or drive connected, just the naked Mesa on the desk.
How can I handle this to see, if the output is working?
Thanks guys!
so I got Linuxcnc running- And I would like to test all i o 's on the bench before moving to the machine.
As soon as I hit enable (F1/F2) all assigned Analog Outputs show -10V.
There is no encoder or drive connected, just the naked Mesa on the desk.
How can I handle this to see, if the output is working?
Thanks guys!
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21 Feb 2025 15:07 - 21 Feb 2025 15:09 #322208
by PCW
Replied by PCW on topic Mesa 7i97T + 7i84 + 7i78 configuration
This is incorrect:
setp hm2_[MESA](BOARD).0.pwmgen.00.offset-mode 0 # offset mode so 50% = 0
Offset mode must be set true on the 7I97/7I97T:
setp hm2_[MESA](BOARD).0.pwmgen.00.offset-mode 1 # offset mode so 50% = 0
This is incorrect as well:
setp hm2_[MESA](BOARD).0.pwmgen.00.output-type 2 #PWM pin0
PWM mode must be set for type 1 (PWM+DIR):
setp hm2_[MESA](BOARD).0.pwmgen.00.output-type 1 #PWM pin0
setp hm2_[MESA](BOARD).0.pwmgen.00.offset-mode 0 # offset mode so 50% = 0
Offset mode must be set true on the 7I97/7I97T:
setp hm2_[MESA](BOARD).0.pwmgen.00.offset-mode 1 # offset mode so 50% = 0
This is incorrect as well:
setp hm2_[MESA](BOARD).0.pwmgen.00.output-type 2 #PWM pin0
PWM mode must be set for type 1 (PWM+DIR):
setp hm2_[MESA](BOARD).0.pwmgen.00.output-type 1 #PWM pin0
Last edit: 21 Feb 2025 15:09 by PCW.
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