Black Box IC478A-M-R2, IC477A-F-R2, IC476A-F-R2, IC477A-M-R2, IC476A-M-R2 Converter RS-485 Device

ASYNC 232↔422/485 CONVERTER

negativeagain5. Connectmaking. thecarefulother pairnoteofofwireswhichtoRCV+colorisandpositive,RCV-andonthewhichterminalcolorisblock,

Ultimately,connectionno regardingyouwithwillthe“flippingwantRS-to485devicetheconstructl ads”)as. showntwo-pairbelowcrossover.cablethatmakes
		NOTE
Posi ve and negative are relative terms				d may not alw	ys have the
s me relat ons	ip for all RS-422 or RS-485 devices (see the previous
XMT+				RCVA	Onepair
Converter			RS-485 Device
XMT-				RCVB
G	To Shield (Optional)			G	Onepair
RCV-				XMTB
RCV+				XMTA
6.connecting“G”Ifthere isterminaltheshieldblockaroundatthe.Tocomputertheavoidtwistedgroundend-paironlyloops,cable,it.wemayrecommenectedbe n						to
		IMPORTANT!
If you are not using		wo IC476A-X-R2s back to back and the proce ure on
previous p	ge p	duces garba	ata (or none at all), flip the “A” and
“B” leads at o	end	f the 485 conn	ction.

A ground wire is not necessary

for proper operation of the Conver er.

should7. Whenyoufinishconnectingresemblethediagramatthewirestopoftothethenextterminalpage.block,theassembly

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