On 23.08.13 20:05, Gregg Eshelman wrote: > Sanyo-Denki specifies their own PBFM-U6 USB to RS485 converter for the > setup connection to their motor drivers. Of course it's hideously > expensive, if you can find one. The setup software is Windows only and > isn't used other than for setting some parameters in the drive.
Ah, then we're not talking about a multipoint RS485 bus, with contention avoidance being a big issue. > Would something like this http://www.ebay.com/itm/161040535475 work > just as well? The same thing is available direct from China, Hong Kong > or Taiwan for less $ but longer wait. What I'd first check is whether the motor driver's RS485 port is full or half duplex, i.e. is it four-wire, with Tx and Rx separated, or two-wire, with Tx and Rx time-shared. Then I'd confirm the connector pinouts, although it's no big deal to wire up a custom cable for your motor driver configuration. If the connection is half-duplex, then enabling of Tx needs to be managed, which would be tricky over usb. (Probably not the case.) Once these questions are settled, I'd just use the Chinese cheapo interface. It should work like a bought one. Erik -- > It may not work well for you since it sounds like you're always in > terminal Vim but I thought I'd pass it along. > No, I don't believe in GUIs. - Arvid Warnecke, on vim-use ML.> ------------------------------------------------------------------------------ Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
