Issue:
Converting 9-pin Modbus to RJ-45 on the ATV71.

Product Line:
Altivar 58, Altivar 61/71

Environment:
9-pin Modbus serial networks

Cause:
Migration from ATV58 to ATV71/61

Resolution:
The ATV58 drive Modbus option card used a DB9 or 9 pin sub D serial connection; however, the ATV71 uses an RJ-45 connection. To make the ATV71 communicate on your network without replacing the network cabling you have the following options:

Option 1: The preferred method is to order the VW3A3303 modbus option card for the ATV71 drive.  This VW3A3303 card will include a DB9  9 pin connector so the customer and use the existing cable and put it into the new option card. The ATV71 drives control mode can be set for 8 Series mode and all of the old ATV58 modbus words will work in the ATV71 drive making for simple conversion.

Option 2: You can splice an RJ-45 connector on your network cable, making sure to match the pin-out of the DB9 9-pin connection with the pin-out of the RJ-45 connection.

Option 3: Try and find a third party company who sells a DB9 to RJ45 connector you will need to make sure the pin outs will match up from the old DB9 to the new RJ45 connection.

For more details see the ATV58 to ATV71/61 Migration Manual and the VW3A3303 User Manual:
https://ckm-content.se.com/ckmContent/sfc/servlet.shepherd/document/download/0691H00000Hr9sRQAR
https://download.schneider-electric.com/files?p_enDocType=User+guide&p_File_Name=1755867.pdf&p_Doc_Ref=1755867

NOTE: both ATV58 and ATV71 have been discontinued for several years.  Newer drives(ATV320, ATV340, ATV600. ATV900) also use an RJ45 port for modbus communication so options 2 and 3 still apply.

If this article does not answer your question, check out our FAQ database that has answers to more commonly asked questions: Frequently Asked Questions - Schneider Electric (se.com)If this FAQ did not solve your issue, you can call us at 1-888-778-2733 Option 2 and then 4 or e-mail us at drive.products.support@se.com to create a case with our Technical Support Team. If you are not located in North America, please contact your local Customer Care Center for assistance: Support | Schneider Electric Global (se.com)

Released for: Schneider Electric Saudi Arabia