Mesa 7i77 No encoder activity. No analogout to servo

tommylight
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15 Jan 2023 22:17 #262073 by tommylight

Replied by tommylight on topic Mesa 7i77 No encoder activity. No analogout to servo

Just checked, that should be OK:
From my Mazak hal,
net NLZ <= [HMOT](CARD0).7i77.0.0.input-02
net x-output => [HMOT](CARD0).7i77.0.1.analogout0

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andypugh
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16 Jan 2023 23:19 #262189 by andypugh

Replied by andypugh on topic Mesa 7i77 No encoder activity. No analogout to servo

It may just indicate that the 7i77 uses two separate SSerial channels.
Sorry for the confusion.

I wonder if maybe the +/- 10V rails are not being powered? I am not sure where they get their power from.

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PCW
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16 Jan 2023 23:22 #262190 by PCW

Replied by PCW on topic Mesa 7i77 No encoder activity. No analogout to servo

There are 2 yellow indicator LEDs roughly in the middle of the 7I77 that monitor the +- analog supplies

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mloser
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22 Jan 2023 18:01 #262665 by mloser

Replied by mloser on topic Mesa 7i77 No encoder activity. No analogout to servo

I did what you said for safety. Now the amplifiers are disabled with no enable signal. I found out I had 2 bad encoders on Y and Z.
The X axis is working good now. I had the cable shield wired to the 7i77 AOUT- pin. I moved the shields to field ground and X axis is working great now. Thanks for everyone's help!

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