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convert rs232 to rs485 in BL4S200

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I am using BL4S200. I would like to convert one RS232 (3 WIRE) to RS485 port. How can I do it? I got one RS232/RS485 converter, but it doesn't work. I know one RS485 existing on BL4S200, but I need second RS485 for a slow device. Anybody knows that?
asked Apr 7, 2016 in Rabbit Software by yang New to the Community (3 points)

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1 Answer

+1 vote
I've used this one from B&B Electronics in the past with the RCM5700 and the RS232 board from the advanced dev kit to implement BACnet MS/TP over RS485. It does auto switching and can be supplied from an external 12V PSU when no hand shaking lines are available to provide power (3 wire).

http://www.bb-elec.com/Products/Datasheets/P-9145-rev1_485SD9TB-4115ds-pdf.pdf

Regards
Peter
answered Apr 8, 2016 by petermcs Veteran of the Digi Community (1,128 points)
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