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KTI Networks KSC-240 - page 1
-1- Industrial RS-232 to RS-485/422 Converter KSC-240 Installation Guide DOC.070412-KSC-240 ...
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KTI Networks KSC-240 - page 2
-2- (C) 2006 KTI Networks Inc. All rights reserved. No part of this documen- tation may be reproduced in any form or by any means or used to make any directive work (such as translation or transformation) without per- mission from KTI Networks Inc. KTI Networks Inc. reserves the right to revise this documentation and to make changes in content from ...
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KTI Networks KSC-240 - page 3
-3- The information contained in this document is subject to change without prior notice. Copyright (C) All Rights Reserved. TRADEMARKS Ethernet is a registered trademark of Xerox Corp. FCC NOTICE This device complies with Class B Part 15 the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful inte ...
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KTI Networks KSC-240 - page 4
-4- T a ble of Contents 1. Introduction ......................................................... 5 1.1 Features ........................................................................................ 6 1.2 Specifications ................................................................................ 7 2. Installation ............................ ...
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KTI Networks KSC-240 - page 5
-5- 1. Introduction The industrial converter is designed to convert RS-232 signals to opti- cally isolated, bala nced, full or half-duplex RS-422 or RS-485 signals at baud rate up to 1 15.2Kbps. It features R TS control de sign, which allows software to control RS-485 tra nsmission. W ith smart AD C TM (Auto Data Control) design, the converter ca n ...
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KTI Networks KSC-240 - page 6
-6- 1.1 Fe ature s Supports RS-232 baud rate up to 115.2Kbps Operation with no required configuration Provides sur ge protection (tra nsient voltage) on all interfa ce lines Provides high ESD protection on all line signals Optical isolated between RS-232 a nd RS-485/422 interfa ces Supports RS-422, 2-wire RS-485, a nd 4-wire ...
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KTI Networks KSC-240 - page 7
-7- 1.2 Specifications This figure shows the importa nt components of the device: ...
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KTI Networks KSC-240 - page 8
-8- Serial Interface (RS-232 Port) Connector DB9 female Pin Assignments DCE type Baud Rate Support Up to 115K baud Connector Shield Connect to chassis ground Connection Dista nce 15 meters High ESD T olera nce +/-15KV on Tx, Rx lines Overvoltage Protection Cutoff if over +/-28V Isolation Optical isolation with RS-485/422 interface RS-485/422 Interf ...
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KTI Networks KSC-240 - page 9
-9- Configuration DIP SW Settings SW Na me State Function SW1-2&1 4W O f f 4-wire (RS-485/422 driver receiver separated) 2W O n 2-wire (RS-485/422 driver receiver connected) SW1-3 T -D O f f Disable RS-485/422 receiver terminator T -E On Enable RS-485/422 receiver terminator SW1-4 T X C O f f RS-485/422 driver enable control by R TS or ADC T X ...
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KTI Networks KSC-240 - page 10
-10- DC Power Interface Interface Screw-type terminal block 1. T wo pairs for power wire ca sca ding 2. One pair for power failure relay output DC Jack (-D6.3mm/+D2.0mm) Operating Input V oltages +7V ~ +30V(+5%) Power consumption 0.6W @+7.5V DC, 12V DC, 30V DC input Basic Information Conversion RS-232 RX data to RS-485/422 TX data RS-485/422 RX dat ...
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KTI Networks KSC-240 - page 11
-11- Certificate F C C Part 15 Class B CE/EMC EMI EN50081-1 Class B EMS EN55024 CE/L V D Safet y E N 60950 EN 50081-1/1992 : EN55022:1994/A1:1995/A2:1997 EN61000-3-2:2000 EN61000-3-3:1995/A1:2001 EN 55024:1998/A1:2001 IEC 61000-4-2:1995 ESD T est IEC 61000-4-3:1995 RS T est IEC 61000-4-4:1995 EFT/BURST T est IEC 61000-4-5:1995 Surge T e st IEC 6100 ...
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KTI Networks KSC-240 - page 12
-12- 2. In stallation 2.1 Unpacking Check that the following components have been included: • Information CD • The device unit • DIN-rail mounting bracket If any item is found missing or damaged, please contact your local reseller for replacement. The following are availa ble optional a ccessories: • Pa nel Mounting Bra cket The bra cket is ...
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KTI Networks KSC-240 - page 13
-13- 2.2 Safety Cautions T o reduce the risk of bodily injury , electrical shock, fire, a nd da mage to the equipment, observe the following precautions. • Do not service any product except as explained in your system documentation. • Opening or removing covers may expose you to electrical shock. Only a trained service technician should service ...
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KTI Networks KSC-240 - page 14
-14- 2.3 DIN-Rail Mounting In the product package, a DIN-rail bracket is installed on the device for mounting the converter in a industrial DIN-rail enclosure. The steps to mount the device onto a DIN rail are: 1 . Install the mounting bracket onto the device unit as shown below: 2 . Attach bracket to the lower edge of the DIN rail and push the uni ...
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KTI Networks KSC-240 - page 15
-15- The final mecha nical di mensions after installing DIN rail mounting bra cket are: ...
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KTI Networks KSC-240 - page 16
-16- 2.4 Pa nel Mounting The device is provided with a n optional pa nel mounting bracket. The bra cket support mounting the device on a pla ne surfa ce securely . The mounting steps are: 1 . Install the mounting bracket on the device unit. 2 . Screw the bracket on the device unit. 3 . Screw the device unit on a pa nel. 4 . Make sure that there are ...
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KTI Networks KSC-240 - page 17
-17- The screw locations a nd final di mension are shown below: ...
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KTI Networks KSC-240 - page 18
-18- 2.5 Applying Power The power specifications of the device are: Operating V oltage + 7 ~ +30VDC Power Consumption M ax. 0.6W @+30V DC, +12V DC, +7.5V DC The device provides two types of power interfaces, terminal block and DC power ja ck for receiving DC power input from external power supply . Using T erminal Blocks Either DC1 interface or DC2 ...
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KTI Networks KSC-240 - page 19
-19- Power wires: 24 ~ 12A W G (IEC 0.5~2.5mm 2 ) Install the power source wires with the plug properly . Screw the wire with plug securely . Then, plug in DC1 conta cts. If cascading the power to next device is needed, install the power wires and plug for another switch. Then, use DC2 contacts. Note: Only up to four device units can be cascaded to ...
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KTI Networks KSC-240 - page 20
-20- Using DC Power Ja ck DC Jack Connector: Jack D 6.3mm D 2.0mm AC Power Adapters: Optional commercial rated adapters are available for purchasing. Rated AC120V/60Hz DC7.5V 1A Rated AC230V/50Hz DC7.5V 1A Rated AC100V/50-60Hz DC7.5V 1A Rated AC240V/50Hz DC7.5V 1A Connect power adapter DC plug to the DC power jack of the converter before connecting ...
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KTI Networks KSC-240 - page 21
-21- 2.6 Power Failure Relay Output The device provides a relay output to report power failure event to a remote alarm monitoring system. The replay output is provided with two contacts labeled PF+ and PF- in the terminal block interface. Use the provided 2P terminal plug for signal wiring a nd plug into the PF+/ - contacts. The function is designe ...
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KTI Networks KSC-240 - page 22
-22- 2.7 DIP SW Configuration SW1-2 & 1 4W 4-wire (RS-485/422 driver receiver separated) 2W 2-wire (RS-485/422 driver receiver connected) [2W] setting activate s the internal connection between driver a nd re- ceiver in RS-485/422 interface. It simplifies the installation of the con- verter in a 2-wire bus. RS-422 usually uses 2-wire topology o ...
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KTI Networks KSC-240 - page 23
-23- SW1-3 T- D Disa ble RS-485/422 receiver terminator T- E Ena ble RS-485/422 receiver terminator [T -E] setting ena bles the internal 120 ohms terminator on the receiver interfa ce. A proper termination is i mporta nt in a bus topology or multi- drop network. The terminator is a re sistor a dded in parallel with the receiver's "A" ...
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KTI Networks KSC-240 - page 24
-24- SW1-4 T X C RS-485/422 driver ena ble control by R TS or ADC T X E RS-485/422 driver is f orced to ena ble [TXC] setting ena bles RS-485/422 driver to be controlled by R TS method or ADC method. R TS method is described later . Refer to SW2 settings for more descri ption a bout ADC method. [TXE] setting forces RS-485/422 driver to be ena bled ...
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KTI Networks KSC-240 - page 25
-25- SW1-5 R TS-D Disa ble R TS control for RS-485/422 driver R TS-E E n a ble R TS control for RS-485/422 driver R TS control method allows the connected RS-232 device (such a s a PC) to control R TS signal (CTS input at the converter end) by software to ena ble or disa ble RS-485/422 driver . [R TS-D] setting is used to disa ble R TS control meth ...
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KTI Networks KSC-240 - page 26
-26- SW1-8&7 BIAS-D RS-485/422 receiver line bi as is disa bled BIAS-E RS-485/422 rece iver line bia s is ena bled The line bias is used to maintain the proper idle-state voltage to the idle condition (when no driver is ena bled on the bus). The se bia s resistors are pull-up resistors on the data B line a nd pull-down resistors (to ground) on ...
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KTI Networks KSC-240 - page 27
-27- SW2-1 S D D Disa ble ADC control for RS-485/422 driver S D E Ena ble ADC control for RS-485/422 driver ADC method involves special circuitry that senses when data is received on the RS-232 interface a nd is being tra nsmitted a nd automatically en- a bles the RS-485/422 driver a s well a s disabling the driver within one chara cter length of t ...
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KTI Networks KSC-240 - page 28
-28- 2.7.1 RS-485/422 Driver a nd Re ce iver Control The following ta ble lists the possible DIP S W settings related to RS-485 a nd RS-422 driver a nd rece iver control: SW1-4 SW1-6 SW1-5 SW2-1 Behavior TX E R XC R TS-D SDD Driver is ena bled. Receiver is disa bled. T X E R X E - - Driver is ena bled. Receiver is ena bled. TXC R XE R TS-D SDD Driv ...
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KTI Networks KSC-240 - page 29
-29- 2.8 Ma king Serial RS-232 Conne ction T ypical RS-232 Interfa ce DCE Pin Assignment T a ble Pin# Signal Na me Input/Output 1 Received Line Signal Detect Output 2 TX Data Output 3 RX Data Input 4 DTE Rea d y Input 5 Signal Ground Output 6 DCE Rea dy Output 7 Clear T o Send Input 8 Request T o Send Output 9 Ring Indicator Output ...
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KTI Networks KSC-240 - page 30
-30- The RS-232 to RS-485/422 converter as a n interfa ce between a n RS-232 device a nd RS-485 or RS-422 bus. The connection is illustrated a s fol- lows: The following signals received on the RS-232 interface are converted to RS-485 bus signals: Pin# Signal Na me Input/Output 2 TX Data Output 3 RX Data Input 7 Clear T o Send Input ...
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KTI Networks KSC-240 - page 31
-31- 2.8.1 Cable for Connection to PC COM Port Connecting to 9-pin DTE device (Computer or PC COM) Connecting to 25-pin DTE device (Computer or PC COM) ...
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KTI Networks KSC-240 - page 32
-32- 3 Ma king RS-485/422 Connection EIA-485 [TIA-485] Bala nced (diff erential) interfa ce; defines the Physical layer , signaling protocol is not defined. EIA-485 specifies bidirectional, half-duplex data tra nsmission. Up to 32 tra nsmitters a nd 32 rece ivers may be interconnected in a ny combination, including one driver a nd multiple receiver ...
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KTI Networks KSC-240 - page 33
-33- RS-485 a nd RS-422 are in wide use a s a n interface f or telecommunica- tions, industrial, medical, security a nd networking a pplications. The f ol- lowing sections describe examples of some of popular physical topologies. 3.1 RS-422 Point-to-Point Circuit This is the si mplest configuration, just one driver a nd one rece iver . If terminati ...
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KTI Networks KSC-240 - page 34
-34- It also ca n convert a n RS-232 device into a receiver node in this point-to- point circuit. The configuration for a RECEIVER node is: SW1-4 T XC En a ble R TS/ADC Control f or Driver SW1-6 R X E E na ble Receiver always SW1-5 R TS-D Disa ble R TS control SW2-1 S DD Disa ble ADC control 3.2 RS-422 Multi-drop Network In this topology there is o ...
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KTI Networks KSC-240 - page 35
-35- The converter ca n convert a n RS-232 device into a M a ster node in this multi-drop network. The configuration for MASTER node is: SW1-4 T X E E na ble Driver always SW1-6 R X C En a ble Receiver R TS/ADC Control SW1-5 R TS-D Disa ble R TS control SW2-1 S DD Disa ble ADC control It also ca n convert a n RS-232 device into a SLA VE node in thi ...
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KTI Networks KSC-240 - page 36
-36- 3.3 RS-485 Multi-drop Network This topology is si milar to RS-422 multi-drop. However , up to 32 receiv- ers are permitted under RS-485. This may be used for point-to-multipoint communications. The converter ca n convert a n RS-232 device into a M aster node in this multi-drop network as illustrated below: The configuration for MASTER node is: ...
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KTI Networks KSC-240 - page 37
-37- It is also a ble to convert a n RS-232 device into a SLA VE node in this multi- drop network. The configuration for a SLA VE node is: SW1-4 T XC E na ble R TS/ADC Control for Driver SW1-6 R X E E na ble Receiver always SW1-5 R TS-D Disa ble R TS control SW2-1 S DD Disa ble ADC control ...
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KTI Networks KSC-240 - page 38
-38- 3.4 RS-485 Half-duplex 2-wire Network This is the typical RS-485 topology . It takes a dva ntage of RS-485 capa bil- ity to support multiple drivers on a bus. RS-422 devices should not be used in this configuration. This topology ena bles bidirectional communi- cation from ma ny nodes over long dista nce s at low to medium data rates, all on a ...
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KTI Networks KSC-240 - page 39
-39- The converter features RS-485 driver a nd receiver in one device. It also provides very flexible configuration settings f or Driver Enable control a nd Receiver Ena ble control. The configuration for the node in RS-485 2- wire network is: SW1-2&1 2W Select 2-wire topology SW1-4 T XC E na ble R TS/ADC Control for Driver SW1-6 R X C En a ble ...
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KTI Networks KSC-240 - page 40
-40- The master node may drive its bus while a ny of the slave nodes are driving the lower pair , making this 4-wire network a full-duplex communi- cation cha nnel. All communication occurs from master to slave or slave to ma ster , so a ny peer to peer communications must be routed through the master node. T o convert a n RS-232 device into a M as ...
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KTI Networks KSC-240 - page 41
-41- 3.6 Summary of the Converter Application s The common topologies i mplemented with RS-485 a nd RS-422 are: 1. RS-422 point to point in 2 -wire circuit 2. RS-422 2-wire multi-drop network 3. RS-485 2-wire multi-drop network 4. RS-485 half-duplex bidirectional network in 2-wire topology 5. RS-485 full-duplex bidirectional network in 4-wire topol ...
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KTI Networks KSC-240 - page 42
-42- 4 LED Indicators The following figure shows the locations of the LED indicators: 4.1 LED Indicators LED DISPLA Y ST A TE INTERPRET A TION P W R Power status O N The device is powered on. O F F The device is powered off. 232 TX RS-232 TX O N RS-232 TX data is present O F F No RS-232 TX data 232 RX RS-232 RX O N RS-232 RX data is present O F F N ...
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KTI Networks KSC-240 - page 43
-43- 5 Fa ctory Default Conf iguration The following ta ble lists the fa ctory default settings f or configuration DIP SW : SW Name Default Setting SW1-2&1 4W 4-wire (RS-485/422 driver receiver separated) SW1-3 T -D (O f f) Disa ble RS-485/422 receiver terminator SW1-4 TXC (Off) RS-485/422 driver ena ble control by R TS or ADC SW1-5 R TS-D (Off ...
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