Black Box IC476A-M-R2, IC477A-F-R2, IC476A-F-R2, IC477A-M-R2, IC478A-F-R2, IC478A-M-R2 Installation

Page 15

propconnctOnceASYNCeyourlythe232connecthaveConverterproply422/485theConvertertosetCONVERTERyourthesystemcnfigurationtotheRS.This-485chapterswitches,andRStells-232youyouinterfacesarehowreadyto.to

4. Installation

To4.1 functionConveectionroperly,to the RSthe-485unitInterf ce

withRSTheresultsgaugesmaylimitandwire-485.26strainThesethanAWGside:reliefterispairsshieldedDB25solid.distancsomewhat,availablemustcopper(following.bdrycorewiththe(umust(notseveralconditioned)RSstranded)have-530differentstandard)unshielded.orNotemeallicphysicaltwoandthattwistedproduceswire,terminaltheinterfacespairshigherbetwenbetterblofonumbermetallicncks19the

theconformsRSThe4.1-.1530mannerDB254-WinerfacetoIREconnecsthCownONNECTIONRSstandardor-below530onstandard,the..UWhenSINGConverte’sTHEconnectingyourDB25cableRS(IC477A-485shouldtoansideRS-Xbeconforms-R2485“crossedANDdeviceIC478Atoover”that-alsoXin-R2)

Converter

RS-485 (530) Device

Signal

DB25 Pin

DB25 Pin

Signal

XMTA

2

3

RCVA

XMTB

14

16

RCVB

RCVA

3

2

XMTA

RCVB

16

14

XMTB

NOTES

1) In the pinout above “A” means positive and “B” means negative.

14

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Contents Async 232↔422/485 Converter TheCEsymbolonyourAsync232CE Notice Ser Cap Configuration Upto115,200bps SpecificationsLb.0.5kg Introduction TheAsync232Configuration DIP Switch S1 ConfigurationAsync 232↔422/485switchCONVERTER Switch S1 Summary Table Position Function Factory Default Configura ionReceivers Typical Switch Applications Switch Settings Installation At all, f ip the a Leads at InstallationConverter RS-485 Device Firmlyit8 Cable11 S allation DB25Page Direction Standard DCE Setting Appendix A. RS-232C Pin ConfigurationsTEReadyBnegative Appendix B /485 Pin ConfigurationAppendix C. Self-Test There’snotenoughoranypowertotheConverter.TheCopyright 1998. Black Box Corporation. All rights reserved