196 Rockwell Automation Publication 520-UM001G-EN-E - September 2014
Appendix C RS485 (DSI) Protocol
Reading (03) Drive
Operational Values
The PowerFlex 520-series Drive Operational Values can be read through the
network by sending Function Code 03 reads to register addresses
2102H...210AH.
Reading (03) and Writing
(06) Drive Parameters
To access drive parameters, the Modbus register address equals the parameter
number. For example, a decimal “1” is used to address Parameter b001 [Output
Freq] and decimal “41” is used to address Parameter P041 [Accel Time 1].
Additional Information
See http://www.ab.com/drives/ for additional information.
2101H (8449) 125 Flash Update Required
126 Non Recoverable Error
127 DSI Flash Update Required
Drive Error Codes
Logic Status
Address (Decimal) Value (Decimal) Description
Drive Operational Values
Reference
Address (Decimal) Description
2102H (8450) Frequency Command (xxx.xx Hz)
2103H (8451) Output Frequency (xxx.xx Hz)
2104H (8452) Output Current (xxx.xx A)
2105H (8453) DC-BUS Voltage (xxxV)
2106H (8454) Output Voltage (xxx.xV)
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