KTI Networks KSC-240 manual RS-422 Multi-drop Network

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It also can convert an RS-232 device into a receiver node in this point-to- point circuit.

The configuration for a RECEIVER node is:

SW1-4

TXC

Enable RTS/ADC Control for Driver

SW1-6

RXE

Enable Receiver always

SW1-5

RTS-D

Disable RTS control

SW2-1

SDD

Disable ADC control

3.2 RS-422 Multi-drop Network

In this topology there is only one driver sending to one or more receiv- ers. One termination resistor is recommended at the extreme end of the bus to eliminate reflections. Up to 10 receivers are permitted under RS-

422.Multiple receive-only nodes may be used for point-to-multipoint communications.

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Contents KSC-240 Installation Guide Industrial RS-232 to RS-485/422 ConverterUnited States InternationalEthernet is a registered trademark of Xerox Corp Table of Contents Introduction Features Specifications Serial Interface RS-232 Port LEDIndicatorsRS-485/422 Interface Configuration DIP SW Settings Name State FunctionMechanical DC Power InterfaceBasic Information EnvironmentalCertificate CE/EMCInstallation UnpackingSafety Cautions DIN-Rail Mounting Page Panel Mounting Screw locations and final dimension are shown below Applying Power Using Terminal BlocksPage UsingDC Power Jack Power Failure Relay Output DIP SW Configuration SW1-2SW1-3 SW1-4 TXESW1-5 SW1-6SW1-8&7 SW2-3 SW2-1SW2-2 SW2-41 RS-485/422 Driver and Receiver Control SW1-4 SW1-6 SW1-5 SW2-1 BehaviorMaking Serial RS-232 Connection Typical RS-232 Interface DCE Pin Assignment TableSignal Name Input/Output Cable for Connection to PC COM Port Characteristics RS-422 RS-485 Making RS-485/422 ConnectionRS-422 Point-to-Point Circuit RS-422 Multi-drop Network TXE RS-485 Multi-drop Network TXC RS-485 Half-duplex 2-wire Network RS-485 Full-duplex 4-wire Network Or use ADC control optional Summary of the Converter Applications LED Indicators Factory Default Configuration Name Default Setting