Mesa and SSI absolute encoders
24 Nov 2014 22:40 #53353
by bigrig
Replied by bigrig on topic Mesa and SSI absolute encoders
Hello PCW!
Have you had time to test the SSI absolute encoder servo interface yet?
Best Regards!
Lars
Have you had time to test the SSI absolute encoder servo interface yet?
Best Regards!
Lars
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25 Nov 2014 00:33 #53359
by PCW
Replied by PCW on topic Mesa and SSI absolute encoders
The HostMot2 SSI interface works and is supported by linuxcnc 2.6.0 or greater
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25 Nov 2014 09:30 #53373
by andypugh
Replied by andypugh on topic Mesa and SSI absolute encoders
If you want to use the SSI interface then we will help you make it work. It should be easy enough, the driver certainly works.
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15 Mar 2020 14:41 #160308
by blazini36
Replied by blazini36 on topic Mesa and SSI absolute encoders
Resurrecting an old thread here but I'm a bit curious about the HM2 SSI interface. I'm not sure if the interface has changed but I'm wondering if it supports single turn SSI encoders yet. It would seem to me that the HM2 side would have to count rotations to calculate actual position and the axis would have to be homed on startup.
I would also assume only mesa cards supporting rs485 trancievers would work with a "2-wire" serial encoder. I was specifically thinking of DMM servos with "A6-standard" 16-bit single turn absolute encoders. They are 4-pin 5v, gnd, S+, and S-
I would also assume only mesa cards supporting rs485 trancievers would work with a "2-wire" serial encoder. I was specifically thinking of DMM servos with "A6-standard" 16-bit single turn absolute encoders. They are 4-pin 5v, gnd, S+, and S-
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15 Mar 2020 21:10 #160342
by andypugh
I think it always did. Encoders of any bit width are extended to 64 bit counters and wrap properly.
Replied by andypugh on topic Mesa and SSI absolute encoders
I'm wondering if it supports single turn SSI encoders yet.
I think it always did. Encoders of any bit width are extended to 64 bit counters and wrap properly.
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