Patton electronics 285 User Manual Download

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USER

MANUAL

MODEL 285

and 285S

RS-232 to RS-485
Interface Converters

SALES OFFICE
(301) 975-1000
TECHNICAL SUPPORT
(301) 975-1007
http://www.patton.com

Part# 07M285-B
Doc# 047012UB
Revised 9/29/93

Revision C and above

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Summary of Contents for 285

Page 1: ...MANUAL MODEL 285 and 285S RS 232 to RS 485 Interface Converters SALES OFFICE 301 975 1000 TECHNICAL SUPPORT 301 975 1007 http www patton com Part 07M285 B Doc 047012UB Revised 9 29 93 Revision C and a...

Page 2: ...ned freight prepaid and insured to Patton Electronics All returns must have a Return Materials Authorization number on the outside of the shipping container This number may be obtained from Patton Ele...

Page 3: ...itch to DCE This setting causes the Model 285 to behave like Data Communications Equipment and transmit data on pin 3 3 3 2 SETTING CONFIGURATION SWITCHES SW1 AND SW2 The five switches shown in Figure...

Page 4: ...ou how to set the Model 285 s configu ration switches to fit several common applications If you have any questions about the proper settings for your application call Patton Technical Support at 301 9...

Page 5: ...ls you how to properly connect the Model 285 to the RS 485 and RS 232 interfaces and how to operate the Model 285 4 1 CONNECTION TO THE RS 485 INTERFACE To function properly the Model 285 must have on...

Page 6: ...e positive and negative on the terminal block again making careful note of which color is positive and which color is negative Ultimately you will want to construct a two pair cross over cable that ma...

Page 7: ...s of whether you are making the RS 485 connection via DB 25 RJ 11 RJ 45 or terminal blocks For specific wiring instructions please refer to the previous pages of Section 4 4 2 CONNECTION TO THE RS 232...

Page 8: ...one required uses ultra low power from EIA data and con trol signals Size 2 66 x 2 10 x 0 73 APPENDIX B RS 232C PIN CONFIGURATIONS 13 14 1 FG Frame Ground 2 TD Transmit Data To Model 285 3 RD Receive...

Page 9: ...APPENDIX C BLOCK DIAGRAM 15...

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