QVS IC-485SI user manual 3MULTIDROP/4-WIRE Full Duplex, MULTIDROP/2-WIRE Half Duplex

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IC-485S/IC-485SI

OPERATION

 

 

---.- __

 

 

3-3MULTIDROP/4-WIRE FULL DUPLEX

OPERATIONIC-485S/IC-485SI

3-4 MULTIDROP/2-WIRE HALF DUPLEX

 

Bl

PC1 =>

=>PC2

COM1/

COM1/

COM2

COM2

 

 

=>PC3

 

COM1/

 

COM2

 

=>PC4

 

COM1/

 

COM2

A

PC1

COM1/

COM2

B1

R+

R-

=>PC2

COM1/

Ii-485 COM2

-Ib2

Configuration:

 

 

Bn

DCE/DTE ] TxRTS, RxON

Note: Bn means any one of the B 1, B2, B3 and SO on .

Figure 3-3 MULTIDROP/4-WIRE FULL DUPLEX

Configuration:

 

 

B

TxRTS, R X

Note: Bn means any one of the B 1, B2, B3 and so on.

Figure 3-4 MULTIDROP/2-WIRE HALF DU-

PLEX

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User’s Manual

 

User’s Manual

11

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Contents Interface Converter Package Checklist Table of Contents Function OverviewInstallation SpecificationsSwitch Function Description Operation Point-to-PointPOINT-TO-POINT/2-WIRE Half DU PlexALF Duplex Duplex3MULTIDROP/4-WIRE Full Duplex MULTIDROP/2-WIRE Half DuplexSIMPLEX/ TRANSMIT, Receive only Monitoring1TERMINAL Block Definition Self TestTrouble Shooting Appendix aPreventing Radio & TV INTERFER- Ence