Corel Ventura - IC485AI0.CHP
Contents
1. 4 7 4 RTS 0 Send Receive No No Yes Yes Receive RTS 1 Data Send Complete Data No Yes _ Yes lt gt The IC 485Al operates RS 485 RTS Control Mode when both SW7 SW8 are set to OFF Inthis mode RTS is pulled high when the computer makes a request to send data 485 User Manual 15 2002 09 27 Auto Send Data Mode Cy be m Receiving Yes Busy Data CTS 1 No x Idle Receive cTSs 0 Data Data Complete No to Send o Yes Yes Send Data l e _ Complete Yes o The IC 485Al operaties in RS 485 Auto Send Data Mode when SW7 is set to OFF and SW8 is set to ON In this mode the status of the bus line is auto detected in order to prevent more than one signal on the line If the the bus line is busy CTS is pulled high and the 485 will not send data to the bus line Ifthe bus line is determined to be idle CTS is pulled low and the IC 485Al sends data to the bus line 16 485 User Manual 2002 09 27 DCE CONNECTION DESCRIPTION Device s Connector Pin Cable IC 485AI2. PEA Eee Ae oe ee ee ee 1 Features Hane eae ie E E 2 1 3 ete ea Boe Ail oe ean ue bees 3 Bottom aon erat ks He 4 DIP Switch 5 Operating Modes i e ccs nee che ot SE vec ee Peete ees 7 Pointo Pointa 22 7 9 eine pede dea 9 SIMpleX te ene Moka 11 Installation stiet ce 12 RS 422 RS 485 Installation 13 Appendix ee a ee T Se 14 Terminal Block Pin 14 Circu 14 RS 485 Operation Mode Flow 15 DCE DTE Connection 17 Specification wre hoses a aot 18 Troubleshooting eee 19 Limited Warranty 19 iv 1 485 User Manual 2002 09 27 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 communicati
3. USER MANUAL IC 4S5Al 2002 09 27 Note This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense 2002 09 27 PACKING LIST This package consists of 1 IC 485Al Bidirectional Isolated Converter 1 Power Adapter 1 User Manual Check to make sure that the unit was not damaged in shipping If you encounter a problem contact your dealer Read this manual thoroughly and follow the installation and operation procedures carefully to prevent any damage to the unit and or any of the devices connected to it Copyright 2001 ATEN International Co Ltd Manual Part No PAPE 0194 100 CE Printed in Taiwan 02 2002 All brand names and trademarks are the registered property of their respective owners 1 485 User Manual iii 2002 09 27 CONTENTS OVEWIEW wee eA
4. DCE DTE DCE DTE 25 25 or DCE DTE DB 9 DB 9 DB 25 DB 25 9 5 DB 25 DB 25 1 1 PG 1 1 2 3 3 2 2 3 3 2 2 3 Rx 3 2 8 7 5 4 RTS CTS 4 5 7 8 4 5 CTS RTS 5 4 6 6 6 6 DSR 6 6 5 5 7 7 5 7 7 1 1 8 8 8 8 9 9 9 9 10 10 10 10 11 11 11 11 12 12 SCD 12 12 13 13 SCS 13 13 14 14 STD 14 14 15 15 TC 15 15 16 16 SRD 16 16 17 17 RC 17 17 18 18 18 18 19 19 SRS 19 19 4 4 20 20 DTR 20 20 21 21 SQD 21 21 9 9 22 22 RI 22 22 23 23 DRS 23 23 24 24 XTC 24 24 25 25 25 25 1 485 User Manual 2002 09 27 SPECIFICATIONS Function Specification Power Consumption DC 9V 900mW Data Rate Up to 115 2 Kbps under 1200 m 4000 ft Connectors 1 x DB 25 female RS 232 1 x 4 Post Terminal Block RS 422 RS 485 1 x Grounding Tab Function Slide Switch DCE DTE Select Switches DIP Switch Segment 1 3 Baud Rate Segment 4 Reserved Segment 5 amp 6 Data Format bits Segment 7 amp 8 RS 422 RS 485 Select Cable Distance Up to 1200 m 4000 ft Operating Temperature 0 50 C Storage Temperature 20 60 C Humidity 0 80 RH Housing Plastic ABS Weight 60g Dimensions L x W x H 54 x 74 5 x 18 5 mm 485 User Manual 2002 09 27 TROUBLESHOOTING Symptom Action Data Transmission Check that IC 485AlI units are secur
5. the installation is large and or the transmitted signals are unstable insert 120 terminal resistors between pins 1 and 2 and between pins 3 and 4 on the terminal blocks of the two units at each end of the installation Master Slave 31 T t R T f R R T R T Slave 1 lt Slave 30 4 000 RS 485 Half Duplex Note When the distance between both ends of the installation is large and or the transmitted signals aren t stable insert a 120 terminal resistor between pins 1 and 2 on the terminal blocks of the two units at each end of the installation 1 485 User Manual 13 2002 09 27 APPENDIX TERMINAL BLOCK PIN ASSIGNMENTS Pin DCE DTE 1 Transmit V 2 Transmit V 3 Receive V 4 Receive V CIRCUIT TEST To test the IC 485Al s internal circuits connect dumb terminal to the unit and do the following 1 Set the DCE DTE switch to the opposite of the terminal 2 Set all DIP Switch segments to ON 3 Connect one wire from Tx 1 to Rx 4 connect a second wire from Tx 2 to Rx 3 4 Set the terminal to Full Duplex 5 Set the baud rate of the communicaton application to 1200 bps 6 Enter data If the circuit is operational data appears on the screen 485 User Manual 2002 09 27 RS 485 OPERATION MODE FLOW GHARTS RTS Control Mode
6. DROP A Multidrop configuration is one in which more than two devices are linked for communication using several IC 485Al units One of the devices that one of the IC 485Als connects to is designated as the Master device All the remaining devices that the rest of the IC 485Als connect to are designated as Slave devices Up to 31 Slave devices can be connected There are two configurations Multidrop Full Duplex and Multidrop Half Duplex 1 Multidrop Full Duplex Multidrop Full Duplex uses reverse four wire cabling to link all the connected IC 485Al units Master Slave 1 T PC1 T A R PC2 COM1 R T COM1 COM2 R H T COM2 Slave 2 R R T COM1 l T COM2 Slave 31 For all IC 485Al units set the unit to or DTE depending on what type of device the IC 485Al will plug into if it will plug into a DCE device configure it for DTE and vice versa For the Master unit set SW7 ON set SW8 RS 422 Master mode For all of the Slave units set SW7 ON set SW8 OFF RS 422 Slave mode Note 1 No more than 31 Slave units can be connected 2 When any of the Slave units transmits data none of the other Slaves may transmit RTS for all other Slave units must be pulled low 1 485 User Manual 9 2002 09 27 2 Multidrop Half Duplex Multidrop Half Duplex uses reverse two wire cabling to link all the
7. DTE depending on what type of device the IC 485AlI 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 SW7 ON set SW8 ON Note No more than 31 Slave units can be connected 1 485 User Manual 11 2002 09 27 INSTALLATION 1 Make sure that all the devices you will be connecting up are powered off 2 Set each IC 485Al s configuration switches according to the information provided in the Switch Configuration and Operating Modes sections 3 Plug the IC 485Al s DB 25 female connector into the computer s RS 232C port 4 Connect the IC 485Al units to each other 1 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 2 See p 14 for the Terminal Block pin assignments 5 Power on the computers The units are now ready for operation Note When connecting units over long distances it may be necessary to install 120 Q resistors See the diagrams on the next page for details 12 485 User Manual 2002 09 27 RS 422 RS 485 INSTALLATION DIAGRAMS Master Slave 31 T 24 R T R T Slave 1 lt Slave 30 4 000 RS 422 Full Duplex Note When the distance between both ends of
8. OP VIEW 1 Status LEDs RTS Lights to indicate that RTS has been pulled high TxD Flashes when data transmission occurs 2 RS 422 RS 485 Terminal Block 3 Grounding Tab 4 DCE DTE Selection Switch If the IC 485Al is going to be plugged into DTE device the switch must be set to DCE and vice versa 5 Power Jack The cable from the Power Adapter plugs in here 6 RS 232 DB 25 Female Connector 1 485 User Manual 3 2002 09 27 BOTTOM VIEW 1 DIP Switch This eight segment DIP Switch located on the unit s bottom panel is used to configure the switch s operating parameters 4 485 User Manual 2002 09 27 DIP SWITCH CONFIGURATION The IC 485Al s settings for Baud Rate Data Format and RS 422 RS 485 Mode are configured by setting the eight segment DIP Switch located on its bottom panel Note When you change any of the DIP Switch settings you must reset the device by powering it off then powering it on again SW 1 3 Baud Rate Baud Rate swi 2 SW3 1200 ON ON ON 2400 OFF ON ON 4800 ON OFF ON 9600 OFF OFF ON 19200 ON ON OFF 38400 OFF ON OFF 57600 ON OFF OFF 115200 OFF OFF OFF Note 1 The Baud Rate must be the same for all units on the installation 2 The default is 9600 bps SW 4 Reserved IC 485Al User Manual 5 2002 09 27 SW 5 6 Data Format These two switch s
9. connected IC 485Al units Master T PC1 T 1 R COM2 R Slave 1 R R PC2 T gt COM1 T COM2 Slave 2 Ri gt 1 2 T Slave 3 R R PC4 T gt COM1 T COM2 Slave 31 For all IC 485Al units set the unit to DCE or DTE depending on what type of device the IC 485Al will plug into if it will plug into a DCE device configure it for DTE and vice versa For all of the units set SW7 and SW8 according to the table on 6 to configure each unit s RS 485 operating mode see p 15 for RS 485 operation details Note No more than 31 Slave units can be connected 485 User Manual 2002 09 27 SIMPLEX A Simplex configuration is one in which more than two devices are linked for communication using several IC 485Al 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 485Al units as shown in the figure below Master Slave 1 PC1 2 1 lt gt rire COM1 com2 R com2 R T Slave 2 es PC3 COM1 COM2 Slave 3 mo PC4 j COM1 COM2 T Slave 31 For all IC 485Al units set the unit to
10. egments configure the bit settings for Start Data Parity and Stop Data Format bits SW5 SW6 9 ON ON 10 OFF ON 11 ON OFF 12 OFF OFF Note The default is 10 bits 1 Start 8 Data 0 Parity 1 Stop Unless you have a special reason to change this we recommend that you leave it as is If you do change it however all the units on the installation must be changed to match SW 7 8 RS 422 RS 485 Operating Mode SW7 determines whether the unit operates as RS 422 or RS 485 converter Asan RS 422 converter SW8 determines whether the unit is configured for Master or Slave operation As an RS 485 converter SW8 determines whether the unit operates RTS Control Mode or Auto Send Data Mode Operating modes are discussed in detail in the next section and on p 15 Note RS 422 is used for 4 wire hookups RS 485 is used for 2 wire hookups Operating Mode SW7 8 RS 422 Master ON ON RS 422 Slave ON OFF RS 485 Auto Send Data Mode OFF ON RS 485 RTS Control Mode OFF OFF 485 User Manual 2002 09 27 OPERATING MODES The 485 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 lin
11. ely plugged into the Failure computers serial ports Check that the cables are properly set up and properly connected Check that SW1 and the DIP Switch are set properly Insert terminal resistors according to the information given on 13 Data Loss or Error Check that the Data Rate and Data Format are the same for all devices Insert terminal resistors according to the information given on p 13 LIMITED WARRANTY IN NO EVENT SHALL THE DIRECT VENDOR S LIABILITY EXCEED THE PRICE PAID FOR THE PRODUCT FROM THE 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 the device or documentation without obligation to notify any individual or entity of such revisions or update For further inquires please contact your direct vendor 1 485 User Manual 19 2002 09 27
12. ked for communication by a pair of IC 485Al 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 the diagram below DB 25 DB 25 Connect T R Connect PC 1 s lt T R PC 2 s COM port R T COM port R T For both IC 485Al units set the unit to DCE or DTE depending on what type of device the IC 485AI will plug into if it will plug into a DCE device configure it for DTE and vice versa Set SW7 SW8 ON for both units They are now configured for RS 422 Master operation 1 485 User Manual 7 2002 09 27 2 Point to Point 2 Wire Half Duplex Point to Point Half Duplex uses straight through two wire cabling as shown in the diagram below DB 25 DB 25 Connect T Connect to PC 1 s lt T B to PC 2 s COM port R T COM port R T For both IC 485Al units set the unit to DCE or depending on what type of device the 485 will plug into if it will plug into DCE device configure it for DTE and vice versa Set SW7 OFF SW8 ON for both units They are now configured for RS 485 Auto Send Data Mode see p 15 for RS 485 operation details 8 485 User Manual 2002 09 27 MULTI
13. ons 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 485Al Isolated Converter is a bidirectional converter that transparently converts RS 232 signals to RS 422 RS 485 signals and vice versa thus permitting the creation of reliable long distance data communications systems using standard computer hardware The 485 provides Point to Point Multidrop and Simplex operations over distances of up to 1200 m 4000 ft Designed with built in optocouplers for exceptional signal isolation plus transformers for excellent power isolation this extremely reliable isolated converter enhances the quality of data communications at the same time that it protects your equipment from electrical surges of up to 2000 volts IC 485Al User Manual 1 2002 09 27 FEATURES Automatic internal RS 485 bus supervision No external flow control signals for RS 485 required Transient suppression on RS 485 data lines LEDs for easy status monitoring Minimum 2000V isolation protection Up to 115 2 Kbps data throughput DCE DTE selectable Point to Point Multidrop and Simplex operating modes Four wire full duplex two wire half duplex Cable distance of up to 1200 m 4000 ft Compact size 485 User Manual 2002 09 27 COMPONENTS T
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