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1. ARTER FCC INFORMATION This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that which the receiver is connected Consult the dealer or an experienced radio television technician for help RoHS This product is RoHS compliant SJ T 11364 2006 The following contains information that relates to China AAA BEEK Ca Ate ZA EM e O O O O e O JT 11363 2006 EAR EE SCR To O S EE2. the figure below Master Slave 1 PC1 T ad PC2 COM1 EC 7 gt COM1 COM2 i da COM2 R T Slave 2 HR Re PC3 7 gt COM1 ER COM2 Slave 3 PC4 2 gt COM1 i COM2 T Slave 31 For all IC 485SN units set SW1 to DCE or DTE depending on what type of device the IC 485SN will plug into if it will plug into a DCE device configure it for DTE and vice versa For all of the units Master and Slave set SW2 to TxON RxON 12 INSTALLATION 1 Set each IC 485SN s configuration switches according to the information provided in the Switch Configuration and Operating Modes sections 2 Plug the IC 485SN s DB 25 female connector into the computer s RS 232C port 3 Connect the IC 485SN units to each other Use two or four wire twisted pair cable in a reverse or straight through configuration according to the information provided in the Switch Configuration and Operating Modes sections You may use either the RJ 11 telephone socket or wire directly to the Terminal Block See the Terminal Block Pin Assignments table for pin assigment details If you are daisy chaining units you will need to use either a two to one RJ 11 adapter or a combination of the Terminal Block and the RJ 11 socket Note 1 When tightening the terminal connector screws it is recommended to use a Phillips PH1 Screwdriver 2 Over tightening the terminal connector sc
3. to TxDTR RTS RxDSR ON Note TXDTR RTS RxDSR ON transmitting receiving mode involves a straight through Data Data Busy Busy wiring scheme See the TXDTR RTS RxDSR ON schematic for details MULTIDROP A Multidrop configuration is one in which more than two devices are linked for communication using several IC 485SN units Either a two to one RJ 11 adapter or a combination of the terminal block and the RJ 11 socket can be used to connect the IC 485SN units to each other One of the devices that one of the IC 485SNs connects to is designated as the Master device All the remaining devices that the rest of the IC 485SNs connect to are designated as Slave devices There are two configurations Multidrop Full Duplex and Multidrop Half Duplex 1 Multidrop 4 Wire Full Duplex Multidrop Full Duplex uses reverse four wire cabling to link all the connected IC 485SN units Master Slave 1 T PC1 T HR PC2 COM1 R T COM1 COM2 T COM2 Slave 2 R HOR PC3 T gt COM1 T COM2 Slave 31 For all IC 485SN units set SW1 to DCE or DTE depending on what type of device the IC 485SN will plug into if it will plug into a DCE device configure it for DTE and vice versa For the Master unit set SW2 to TXON RxON For all Slave units set SW2 to TxRTS RxON 10 2 Multidrop Half Duplex Multidrop Half Duplex uses straight
4. N BABY 5 11363 2006 0 IR ERER X IRR HERO HSJ T 11363 200688 R S cere IC 4555N USER MANUAL Online Registration International http support aten com North America http www aten usa com product_registration Telephone Support International 886 2 8692 6959 China 86 10 5255 0110 Japan 81 3 5323 7178 Korea 82 2 467 6789 North America ATEN TECH 1 888 999 ATEN ATEN NJ 1 732 356 1703 United Kingdom 44 8448 158923 Technical Support For international online technical support including troubleshooting documentation and software updates http support aten com For North American technical support Email ATEN TECH support aten usa com ATEN NJ sales aten com Online Technical Support ATEN TECH http www aten usa com support ATEN NJ http support aten com Troubleshooting ATEN TECH http www aten usa com Documentation Software Updates ATEN NJ http www aten com Telephone ATEN TECH 1 888 999 ATEN ATEN NJ 1 732 356 1703 PACKAGE CONTENTS The IC 485SN package contains the following items 11C 485SN Bidirectional Converter 1 User Manual Check to make sure that all the components are present and that nothing got damaged in shipping If you encounter a problem contact your dealer Read this manual thoroughly and follow the installation
5. and operation procedures carefully to prevent any damage to the unit and or any of the devices connected to it Features may have been added to the IC 485SN since this manual was printed Please visit our website to download the most up to date version of the manual Copyright 1998 2000 ATEN International Co Ltd Manual Part No PAPE 0134 100 Manual Date 2010 03 26 ATEN and the ATEN logo are trademarks of ATEN International Co Ltd All rights reserved All other trademarks are the property of their respective owners 4 OVERVIEW Although RS 232 serial ports are found on almost every computer because of their slow transmission speeds limited range and limited networking capabilities they are not an effective solution for industrial strength long distance communications systems Systems based on the RS 422 and RS 485 standards on the other hand are not subject to the RS 232 limitations because they utilize different voltage lines for the data and control signals The IC 485SN Converter is a bidirectional converter that transparently converts RS 232 signals to RS 422 RS 485 signals and vice versa The IC 485SN provides Point to Point Multidrop and Simplex operations over distances of up to 1200 m 4000 ft thus permitting the creation of reliable long distance data communications systems using standard computer hardware FEATURES Data Transmission Controlled by the RTS Signal DCE DTE selecta
6. ble Point to Point Multidrop and Simplex Duplex Operating Modes External Power Not Required Power Spplied by the RS 232 interface Compact size SWITCH CONFIGURATION Terminal Block RJ 11 Phone Jack Connecter The IC 485SN is configured by setting two slide switches SW1 is used to select the Device Mode SW2 is used to select the Transmitting and Receiving Mode as shown in the table below Position SW1 SW2 1 DCE TxON RxON 2 DTE TxRTS RxON 3 TxDTR RTS RxDSR ON Explanations of the SW1 and SW2 terns are given in the table below Term Meaning DCE DCE means Date Communication Equipment if the IC 485SN is going to be plugged into a DTE device the IC 485SN must be set to DCE DTE DTE means Date Terminal Equipment if the IC 485SN is going to be plugged into a DCE device the IC 485SN must be set to DTE TxON RxON This setting is used in Point to Point operations in which the unit is always in Transmitting and Receiving Mode See the TXON RxON schematic for details TxRTS RxON This setting is used in Multidrop operations in which the unit is always in Receiving Mode and is in Transmitting Mode only when the RTS signal is high See the TXON RxON schematic for details TxDTR RTS RxDSR ON This setting is used in Multidrop operations in which the unit is always in Receiving Mode and is in Transmitting Mode only when the RTS
7. rews may result in damage to your IC 485SN and difficulty loosening the screws 4 Power on the computers The units are now ready for operation ERE APPENDIX TERMINAL BLOCK PIN ASSIGNMENTS Pin Assignment 1 Transmit V 2 Transmit V 3 Receive V 4 Receive V DCE DTE CONNECTION TABLE Device s Connector Pin Cable IC 485ASI DCE DTE DCE DTE 25 25 DCE DTE DB 9 DB 9 DB 25 DB 25 9 25 DB 25 25 2 3 3 2 Tx ml 2 3 3 2 2 3 Rx Tx 9 2 8 7 5 4 RTS CTS 4 5 7 8 4 5 CTS RTS 5 4 4 6 20 6 DSR DTR 6 20 6 4 6 20 DTR DSR 20 6 5 5 7 Y GND Y 7 14 SW2 PIN ASSIGNMENT SCHEMATICS RXDN 4 Tx 2 Tx 3 Rx 4 Rx TXRTS RXON Tx 15 DCE Tx2 Rx3 RTS CTS DTR DSR TX Tx Rx RTS m CTS DTR DSR TXDTR RTS RXDSR ON DATA 16 TROUBLESHOOTING Symptom Action Data Transmission Failure Check that the IC 485SN units are securely plugged into the computers serial ports Check that the cables are properly set up and properly connected Check that SW1 and SW2 are set properly Data Loss or Error Check that the Data Rate and Data Format are the same for all devices SPECIFICATIONS Power Consumption 6 51 mA Data Rate Up to 100 Kbps under 1 2 Km 4000 f
8. signal is high See the TXON RxON schematic for details OPERATING MODES The IC 485SN supports three operating modes Point to Point Multidrop and Simplex Point to Point and Multidrop can be configured for Full or Half Duplex Each of the operating modes is explained below POINT TO POINT A Point to Point configuration is one in which two devices located at two different places are linked for communication by a pair of IC 485SN units There are two configurations Point to Point Full Duplex and Point to Point Half Duplex 1 Point to Point 4 Wire Full Duplex Point to Point Full Duplex uses reverse four wire cabling as shown in the diagram below DB 25 RJ 11 RJ 11 DB 25 Connect Connect to PC 1 s to PC 1 s Com Port Com Port For both IC 485SN units set SW1 to DCE or DTE depending on what type of device the IC 485SN will plug into if it will plug into a DCE device configure it for DTE and vice versa For both IC 485SN units set SW2 to TXON RxON 2 Point to Point 4 Wire Half Duplex Point to Point Half Duplex uses straight through four wire cabling as shown in the diagram below DB 25 RJ 11 RJ 11 DB 25 Connect Connect to PC 1 s gt to PCZ1 s Com Port Com Port For both IC 485SN units set SW1 to DCE or DTE depending on what type of device the IC 485SN will plug into if it will plug into a DCE device configure it for DTE and vice versa For both IC 485SN units set SW2
9. t Connectors e 1x DB 25 female for RS 232 e 1x4 Post Terminal Block for RS 422 RS 485 e 1x RJ 11 Socket for RS 422 RS 485 Function SW1 DCE DTE Select Switches sw2 e TxON RxON e TxRTS RxON e TxDTR RTS RxDSR ON Housing Plastic Weight 60g Dimensions L x W x 54 x 74 5 x 18 5 mm 217 LIMITED WARRANTY IN NO EVENT SHALL THE DIRECT VENDOR S LIABILITY EXCEED THE PRICE PAID FOR THE PRODUCT FORM DIRECT INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THE PRODUCT DISK OR ITS DOCUMENTATION The direct vendor makes no warranty or representation expressed implied or statutory with respect to the contents or use of this documentation and specially disclaims its quality performance merchantability or fitness for any particular purpose The direct vendor also reserves the right to revise or update device or documentation without obligation to notify any individual or entity of such revisions or update For further inquires please contact your direct vendor 18
10. through four wire cabling to link all the connected IC 485SN units DB 25 RJ 11 RJ 11 DB 25 5 5 DATA DATA porre DATA 5 DATA un 2 BUSY 2 Busy 0 PCHZ S Po BUSY BUSY GOM part 5 5 DATA DATA Connect 4 4 f DATA DATA Connect to PCZ3 s 2 2 BUSY BUSY to PC 4 s COM port 3 3 BUSY BUSY DB 25 RJ 141 RI DB 25 For all IC 485SN units set SW1 to DCE or DTE depending on what type of device the IC 485SN will plug into if it will plug into a DCE device configure it for DTE and vice versa For all 4855 units set SW2 to TXDTR RTS RxDSR ON Note 1 Only one device ata time can talk on the bus RTS ON During that time the other devices must remain silent RTS OFF See the explanation regarding TxDTR RTS RxDSR ON in the Switch Configuration section 2 TxDTR RTS RxDSR ON transmitting receiving mode involves a straight through Data Data Busy Busy wiring scheme See the TXDTR RTS RxDSR ON schematic 11 SIMPLEX A Simplex configuration is one in which more than two devices are linked for communication using several IC 485SN units in a manner similar to Multidrop The difference is that in a Simplex configuration the Master device can only talk and the Slave devices can only listen Simplex uses reverse two wire cabling to link all the connected IC 485SN units as shown in
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