Input Process Data - Eaton PowerXL DA1 Communications Manual

2.6.4 Input process data

2.6.4.1 Command (ID 1)
Input process data is used to control the variable frequency drive/variable
speed starter.
ID Designation
1 Fieldbus command
2 Fieldbus speed reference value
3 Torque reference (DA1 only)
4 Modbus ramp time (DA1, DC1 only)
These bits are used to control the variable frequency drive/variable speed
starter. The content can be adapted to your own application and then sent as
a control word to the variable frequency drive.
Bit Description
Value = 0
0 Stop
1 Clockwise rotating field (FWD)
2 No action
3 No action
4 Not used
5 No action
6 No action
7 No action
8 Not used
9 Not used
10 Not used
11 Not used
12 Not used
13 Not used
14 Not used
15 Not used
Modbus RTU for variable frequency drive DA1, DC1, DE1 09/16 MN040018EN www.eaton.com
2.6 Operating mode Modbus RTU
Scaling Factor Unit
– Binary code
0.1 Hz
0.1 %
0.01 s
Value = 1
Operational
Anticlockwise rotating field (REV)
Reset Fault
Coast to stop
Quick stop (ramp 2)
Fixed frequency FF1
Overwrite setpoint value with 0
2 Modbus RTU
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