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ATEN IC-485SN user manual

1. 10 Troubleshooting 11 Specifications 12 Radio amp TV Interference 13 Online Registration You can register your product at our online support center International http support aten com North America http www aten usa com product registration Online Support Online technical support is available to ATEN customers through our support center International http support aten com North America http www aten usa com support Troubleshooting Documentation including online manuals and Software Updates firmware and drivers are available at the ATEN website International http www aten com North America htttp www aten usa com Overview The IC 485SN is a bidirectional converter for RS 232 and RS 485 RS 422 interfaces that provides Point to Point Multidrop and Simplex operations A figure showing the names and locations of its features is given below RS 232 DB 25 Female Connecter RJ 11 The operating mode contention control and RS 232C assignments are all configured with two slide switches SW1 and SW2 details are given in the Switch Configuration section below Features Data Transmission Controlled by the RTS Signal DCE DTE Selectable Point to Point Multidrop and Simplex Duplex Operating Modes External Power Not Required Power Supplied by
2. REC TIONAL VERTER USER S MANUAL IC es Unpacking The IC 485SN package contains One IC 485SN Converter One User Manual Check to see if the product has been damaged in shipping If you encounter a problem contact your dealer right away SJ T 11364 2006 The following contains information that relates to China BUE VH BEER Ate ZR EM O O O O msn O O O RTRASEESOREZAEM EAST 11363 2006 E BER EE CK 3 1 S EGER HH SU T 11363 2006 REEK X RIMAS ERE VARO AAAA HisJ T 11363 2006 89 R RER Copyright 1998 ATEN International Co Ltd Manual Part No PAPE 1134 100 CC Printed in Taiwan 01 1999 All brand names and trademarks are the registered property of their respective owners Table Contents Online Registration 1 a 2 Features qe 2 Switch Configuration seacor anA 3 Operating Modes 4 PONTO PON teas se bate bebo eoa duin 4 5 8 latas 9 ccm 10 Terminal Block Pin Assignments 10 DCE DTE Connection Description 10 SW2 Pin Assignment Schematics
3. 485SN supports three operating modes Point to Point Multidrop and Simplex Point to Point and Multidrop can be configured for Full Duplex or Half Duplex operation 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 figure below DB 25 RJ 11 RJ 11 DB 25 5 5 Connect TX 4 2 TX Connect to PC 1 s TX E TX to PCZ2 s COM port COM port RX 3 RX 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 figure below DB 25 RJ 11 RJ 11 DB 25 Connect DATA DATA Connect to PC 1 s DATA A F DATA to PCH2 s COM port BUSY BUSY COM port Busy 3 Busy 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 int
4. set SW2 to TXRTS RxON 2 Multidrop Half Duplex Multidrop Half Duplex uses straight through four wire cabling to link all the connected IC 485SN units as shown in the figure below DB 25 RJ 11 RJ 11 DB 25 5 5 A DATA 4 to PC H s PAA 2 gl DATAS les o 5 lt BUSY to PC 2 s BUSY BUSY port zl 5 5 DATA DATA Connect 4 4 DATA DATA to PCH3 s 2 2 BUSY BUSY to PC 4 s COM port 3 3 BUSY BUSY DB 25 RJ 11 RJ 11 DB 25 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 all IC 485SN units set SW2 to TXDTR RTS RxDSR ON Note 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 table on p 3 TxDTR RTS RxDSR ON transmitting receiving mode involves a straight through Data Data Busy wiring scheme See the pin assignment schematic in the Appendix for more details 5 Simplex configuration is one in which more than two devices are linked for communication using several IC 485SN units in a manner similar to a Multidrop configuration The difference is that in a Simplex configurati
5. The RS 232 Interface Compact Size Switch Configuration The IC 485SN is configured by setting two slide switches SW1 is used to select the IC 4 8 5 S N s Device Mode SW2 is used to select the IC 485SN s Transmitting and Receiving Mode as shown in the table below 1 DCE RxON 2 DTE TXRTS RXON 3 TxDTR RTS RXDSR ON An explanation of the SW1 and SW2 terms is given in the table below DCE means Data Communication Equipment if the DCE IC 485SN is going to be plugged into a DTE device the IC A485SN must be set to DCE DTE means Data Terminal Equipment if the IC 485SN is going to be plugged into a DCE device DTE the IC 485SN must be set to DTE This setting is used in Point to Point operations in TxON RxON which the unit is always in Transmitting and Receiving mode See P 10 Schematic This setting is used in Multidrop operations in which the unit is always in receiving mode it is transmitting mode only when the RTS signal is high See P 11 Schematic TxRTS RxON This setting is used in Multidrop Half Duplex operations to monitor the RS 485 line signals Receiving mode is always ON DSR is used to check TxDTR RTS RxDSR ON If the line is busy If not busy the RTS signal is set high allowing data transmission Prior to transmission a DTR signal is sent to keep the other devices from transmitting See P 11 Schematic Operating Modes The IC
6. dy for operation Appendix Terminal Block Pin Assignments 1 Transmit V 2 Transmit V 3 Receive 4 Receive V DCE DTE Connection Description Device s Connector Pin Cable DCE DTE DCE DB 9 DB 25 BY oO NO IC 485S DTE 25 25 DCE DTE 25 9 25 25 25 2 2 3 3 Rx 3 2 4 RTs cts 4 5 5 RTS 5 4 6 DSR DTR 6 20 20 DTR 20 6 7 GND 7 7 SW2 Pin Assignment Schematics TxON RxON TxRTS RxON N 3 RX 4 RX D Tx TX 9 TxDTR RTS RxDSR ON 3 BUSY 4 BUSY y DCE Tx Tx DTE Rx o m DTR 9 0 L CSR RTS CTS y DCE Tx Rx 9 g RTS CTS DTR Q DSR O Specifications Power Consumption 6 51 mA Data Rate Up to 100K bps under 4 000 ft 1 2 Km Connectors RS 232C DB 25 female RS 485 422 A 4 terminal block or RJ 11 Function Switches SW1 DCE DTE Select 2 RXON TxRTS RXON TxDTR RTS RXDSR ON Enclosure Plastic Weight 60g Dimensions L x W x H 54x74 5x 18 5 mm Troubleshooting Check that the 4855 units are securely plugged into the PC s serial ports Data Transmission Failue Ch
7. eck that the cables are properly set up and properly connected Check that SW1 and SW are set properly Data Loss or Error Check that the Data Rate and Data Format are the same for both devices If the above solutions fail to alleviate the problem contact your dealer for help Radio amp TV Interference Warning This equipment generates uses and radiates radio frequency energy and if not installed and used in accordance with the instruction manual may cause interference to radio and television reception It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of the FCC Rules which are designed to provide reasonable protection against such interference when operated in a commercial environment Operation of this equipment in a residential area is likely to cause interference in which case the user at his own expense will be required to take whatever measures may be required to correct the interference If this equipment does cause 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 the receiving antenna Relocate the computer with respect to the receiver Move the computer away from the receiver Plug the computer into a different outlet so
8. o a DCE device configure it for DTE and vice versa For both IC 485SN units set SW2 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 pin assignment schematic in the Appendix for more 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 jack can be used to connect the IC 485SN units to each other One of the devices that one of the IC 485SN units connects to is assigned to be the master device The remaining devices that the other IC 485SN units connect to are 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 as shown in the figure below A Bl T R PC1 T R PC2 COM1 R T COM1 COM2 R T COM2 B2 R R T COM1 T COM2 Bn all IC 485SN units set SW1 to DCE or DTE depending 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 IC 485SN unit set SW2 to TXON RXON For all Slave IC 485SN units
9. on 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 the figure below A T R PC1 R PC2 1 R T 1 COM2 R T COM2 IC 485SN B2 i PC3 T COM1 T COM2 B3 Eis 4 NS COM1 COM2 T For all IC 485SN units set SW1 to DCE or DTE depending on what type of device the IC 485SN will plug into ifit will plug into a DCE device congas itfor DTE and vice versa For all IC 485SN units set SW2 to TXON RxON Installation Set the configuration switches SW1 and SW2 according to the information provided in the Switch Configuration and Operation sections Plug the IC 485SN s DB 25 female connector into the PC s RS 232C port Use telephone cable to connect one IC 485SN unit to the other a Use four wire or two wire cable according to the information given in the Operation section b Use reverse or straight through wiring according to the information given in the Operation section C You can use the RJ 11 telephone jack or wire directly to the Terminal Block see the Appendix for the Terminal Block pin assignments 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 jack Power On the PC The unit is now rea
10. that the computer and receiver are on different branch circuits 5 Ensure that the mounting screws attachment connector screws and ground wires are tightly secured 6 Ensure that good quality shielded and grounded cables are used for data communications RON If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions

ATEN IC-485SN user manual

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