Rockwell Automation Publication 22C-UM001J-EN-E - January 2017 171
Modbus RTU Protocol Appendix E
In addition to being written, register address 8192 can be read using Function
Code 03.
Writing (06) Reference
The Speed Reference to a PowerFlex 400 drive can be controlled via the
network by sending Function Code 06 writes to register address 8193
(Reference). P038 [Speed Reference] must be set to 5 “Comm Port” in order to
accept the Speed Reference. In addition to being written, register address 8193
can be read using Function Code 03.
Logic Command
Address (Decimal) Bit(s) Description
8192 0 1 = Stop, 0 = Not Stop
1 1 = Start, 0 = Not Start
2 1 = Jog, 0 = No Jog
3 1 = Clear Faults, 0 = Not Clear Faults
5, 4 00 = No Command
01 = Forward Command
10 = Reverse Command
11 = No Command
61 = Local Control
(1)
, 0 = Comm Control
(1) Local Control causes the drive to use C108 [Start Source 2] and C109 [Speed Ref 2] for start and speed reference control.
7 1 = MOP Increment, 0 = Not Increment
9, 8 00 = No Command
01 = Accel Rate 1 Enable
10 = Accel Rate 2 Enable
11 = Hold Accel Rate Selected
11, 10 00 = No Command
01 = Decel Rate 1 Enable
10 = Decel Rate 2 Enable
11 = Hold Decel Rate Selected
14, 13, 12 000 = No Command
001 = Freq. Source = P038 [Speed Reference]
010 = Freq. Source = A142 [Internal Freq]
011 = Freq. Source = Comms (Addr 8193)
100 = A143 [Preset Freq 0]
101 = A144 [Preset Freq 1]
110 = A145 [Preset Freq 2]
111 = A146 [Preset Freq 3]
15 1 = MOP Decrement, 0 = Not Decrement
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