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Subject: Modbus Communication problem with Altivar 58F motor drive

Date: 07/25/02 at 7:18 AM
Posted by: Kevin Mun
E-mail: dhkmnsmy@msm.com
Message Posted:

My project is to accurately control a motor using the motor drive: Altivar 58F directly using a PC as controller through a Modbus ASCII communication bus. Note that the modbud communication card for the drive is used. After several trials, I have finally establish that command. The inverter is answering me but would not actually turn the motor i.e the read command works but the write commands would not. I do not know where I have been wrong and why the drive would not accept executing the write command? Is there something that can be done?

Thank you for your precious help.

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