At 03:16 PM 12/4/97 -0600, you wrote:
>To all network gurus on a PICLIST,
>I have RS485 network of one master and multiple (around 5) remote
>controls (with PICs, of coarse). In previous situations I always
>daizy-chaned remotes, terminated two far ends and had no problems. Now I
>can't do that. So I have star configuration with one master transmitter
>connected to at least 5 parallel receivers (with cable length
>300-500ft), and all 5 transmitters on remote controls connected to one
>master receiver. Slave transmitters have transmit enable, so they are
>activated only one at a time. Transceivers are MAX489.
>So the question is:
>Though I understand that star configuration is not recommended for 485,
>what would be the best solution for this situation (from the point of
>view of termination, I guess - or whatever).
>Will be thankful for any advice.
>
>Gennady Palitsky,
>Jefferson Audio Video Systems
>gennadyp@mainlink.net

download the application note about RS485 from www.bb-elec.com
they have star configuration for RS485 but need a repeater.
very good app note.
goodluck

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