Looking for different communication possibilities.

andypugh
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13 Apr 2017 14:43 #91315 by andypugh

Replied by andypugh on topic Looking for different communication possibilities.

dab77 wrote:
winches can be 20-30mt from the pc,

I think 20m is too far to transfer an analogue velocity signal. I think closing the loop at the drive and sending absolute position on RS485 or similar is the best plan.

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bkt
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14 Apr 2017 11:16 #91351 by bkt

Replied by bkt on topic Looking for different communication possibilities.

My ideas was closing loop in drive, using Lcnc as 2th loop and use 20mt of power and encoder cable .... in these case pc and electrical box in the same box.
Obviusly 20mt of analogue signal cable is too much...

regards
Giorgio

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dab77
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14 Apr 2017 11:53 #91357 by dab77

Replied by dab77 on topic Looking for different communication possibilities.

Andy, i like your suggesting.
Is there already something to send positions remotely by rs485, or is it to be implemented?

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andypugh
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19 Apr 2017 15:46 #91641 by andypugh

Replied by andypugh on topic Looking for different communication possibilities.

There are UART options for Mesa cards, and daughter-boards that have RS485 / 422 drivers: store.mesanet.com/index.php?route=produc...id=117&search=RS-422

I think you would need a (fairly simple) HAL component to connect HAL position commands to the UART channels.

There is a drive that currently exists that would just plug straight in and work (STMBL) but it isn't commercially available.

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