Rockwell Automation Publication 22C-UM001J-EN-E - January 2017 173
Modbus RTU Protocol Appendix E
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 “39” is used to address Parameter P039 [Accel Time 1].
Additional Information
Refer to http://www.ab.com/drives/ for additional information.
Error Code
Address (Decimal) Value (Decimal) Description
8449 0 No Fault
2 Auxiliary Input
3 Power Loss
4Undervoltage
5Overvoltage
6Motor Stalled
7 Motor Overload
8 Heatsink Overtemperature
12 HW Overcurrent (300%)
13 Ground Fault
15 Load Loss
29 Analog Input Loss
33 Auto Restart Tries
38 Phase U to Ground Short
39 Phase V to Ground Short
40 Phase W to Ground Short
41 Phase UV Short
42 Phase UW Short
43 Phase VW Short
48 Params Defaulted
63 Software Overcurrent
64 Drive Overload
70 Power Unit Fail
71 Net Loss
81 Communication Loss
94 Function Loss
100 Parameter Checksum Error
122 I/O Board Fail
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