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MAN0847-01 

21 MAR 2007 

PAGE 3 

No part of this publication may be reproduced without the prior agreement and written permission of Horner APG, Inc. 
Information in this document is subject to change without notice.  

 

HE500RS232485 4 Pin I-O Header Pin configuration 

 

RS-485 half 

duplex Pin 

RS-485 Function 

0V 0VDC 

(Supply) 

+V 

12 to 24VDC (Supply) 

100mA Max 

D- 

RS-485 Data - 

D+ 

RS-485 Data + 

 
 

Summary of Contents for HE500232485

Page 1: ...RS232 cable to a DCE DB9 connector RS485 connect the RS485 data lines to the D and D terminals observing polarity Note that the communications common may be connected to the 0V terminal however since converter is not isolated standard practices should be applied to avoid ground loops Power connect 12 24VDC 100mA max to the V and 0V terminals observing polarity Termination when the pin jumper is in...

Page 2: ... extended using a variety of repeater products on the market Data is transmitted differentially on two wires twisted together referred to as a twisted pair CSCAPE configuration To enable an OCS device for use with the HE500232485 converter an Open function block must be provided that configures the associated OCS port for Multidrop Half handshaking This configuration allows the OCS to drive the HE...

Page 3: ...he prior agreement and written permission of Horner APG Inc Information in this document is subject to change without notice HE500RS232485 4 Pin I O Header Pin configuration RS 485 half duplex Pin RS 485 Function 0V 0VDC Supply V 12 to 24VDC Supply 100mA Max D RS 485 Data D RS 485 Data ...

Page 4: ...ke sure all circuits are de energized before making connections Before each use inspect all cables for breaks or cracks in the insulation Replace immediately if defective TECHNICAL SUPPORT For assistance and manual updates contact Technical Support at the following locations North America Europe 317 916 4274 353 21 4321 266 www heapg com www horner apg com techsppt heapg com techsupport hornerirl ...

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