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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 Primary device can only talk, and the 

Secondary devices can only listen. 

Simplex uses reverse two wire cabling to link all the 
connected IC-485SN units, as shown in the figure below:

 

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 (Primary and Secondary), set SW2 to 
TxON, RxON.

 

Primary

T+

T

 

-

R

 

-

R+

Secondary 1

R+
R -
T -
T+

Secondary 2

R+
R -
T -
T+

Secondary 3

R+
R -
T -
T+

:
:

Secondary 31

PC1
COM1/
COM2

PC2
COM1/
COM2

PC3
COM1/
COM2

PC4
COM1/
COM2

Содержание IC485SN

Страница 1: ......

Страница 2: ...terference 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 to which the receiver is ...

Страница 3: ...tp support aten com Email Support support aten com Online Support Technical Support http support aten com Troubleshooting Documentation Software Updates http www aten com Email Support support aten usa com Online Technical Support Troubleshooting Documentation Software Updates http www aten usa com support Telephone Support 1 888 999 ATEN ext 4988 1 949 428 1111 ...

Страница 4: ... Telephone Support For telephone support call this number International 886 2 8692 6959 China 86 400 810 0 810 Japan 81 3 5615 5811 Korea 82 2 467 6789 North America 1 888 999 ATEN ext 4988 1 949 428 1111 ...

Страница 5: ...on 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 2020 ATEN International Co Ltd Manual Part No PAPE 0134 100 Manual Date 2020 07 13 ATEN and the ATEN logo are tradema...

Страница 6: ... 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 ...

Страница 7: ...d 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 RS 232C RS 232C DB 25 Female DB 25 Female Terminal Block Terminal Block SW1 SW1 SW2 SW2 RJ 11 Phone Jack RJ 11 Phone Jack Power Jack Power Jack Connecter Connecter Connecter Connecter ...

Страница 8: ...etting 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 Multidr...

Страница 9: ... 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 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 ve...

Страница 10: ...ll 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 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 4 2 DB 25 DB 25 RJ 11 RJ 11 Connect to PC 1 s Com Port 5 2 3 5 4 3 DATA DATA BUSY BUSY DATA DATA BUS...

Страница 11: ...485SNs connect to are designated as Secondary 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 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 conf...

Страница 12: ...a 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 DATA DATA BUSY BUSY DATA DATA BUSY BUSY DATA DATA BUSY BUSY DATA DATA B...

Страница 13: ...Simplex uses reverse two wire cabling to link all the connected IC 485SN units as shown in the figure below 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 Primary and Secondary set SW2 to TxON RxON Primary T T R R Secondary 1 R R T T Secondary 2 R R ...

Страница 14: ...ation 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 rec...

Страница 15: ...mit V 2 Transmit V 3 Receive V 4 Receive V DCE DB 9 2 3 8 7 4 6 5 DTE DB 9 3 2 7 8 6 4 5 DCE DB 25 3 2 5 4 20 6 7 DTE DB 25 2 3 4 5 6 20 7 DCE DB 25 2 3 4 5 6 20 7 DTE DB 25 3 2 5 4 20 6 7 Tx Rx Rx Tx RTS CTS CTS RTS DSR DTR DTR DSR GND Cable 25 25 or 9 25 pin IC 485ASI Device s Connector Pin ...

Страница 16: ... 16 SW2 Pin Assignment Schematics TxON RxON TxRTS RxON 1 2 3 4 Tx Tx Rx Rx Tx2 Rx3 RTS CTS DTR DSR 1 2 3 4 Tx Tx Rx Rx Tx Rx RTS CTS DTR DSR TX RX DCE DTE ...

Страница 17: ... 17 TxDTR RTS RxDSR ON 1 2 DATA DATA RTS CTS DTR TX RX DCE DTE DCE DTE 3 4 BUSY BUST DSR ...

Страница 18: ...2 are set properly Data Loss or Error Check that the Data Rate and Data Format are the same for all devices Power Consumption 6 51 mA Data Rate Up to 100 Kbps under 1 2 Km 4000 ft Connectors 1 x DB 25 female for RS 232 1 x 4 Post Terminal Block for RS 422 RS 485 1 x RJ 11 Socket for RS 422 RS 485 Function Switches SW1 DCE DTE Select SW2 TxON RxON TxRTS RxON TxDTR RTS RxDSR ON Housing Plastic Weigh...

Страница 19: ...a repair service without charge during the Warranty Period If a product is detective ATEN will at its discretion have the option to 1 repair said product with new or repaired components or 2 replace the entire product with an identical product or with a similar product which fulfills the same function as the defective product Replaced products assume the warranty of the original product for the re...

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