Technical Bulletin

Modbus RTU On-Board Communications
14 PowerXL DG1 Series VFD MN040010EN—May 2014 www.eaton.com
Process Data In
This register range is reserved for the control of the VFD.
Process Data In is located in range ID 2001–2099. The
registers are updated every 10 ms. See table below.
Table 23. Fieldbus Basic Input Table
Control Word
PowerXL DG1 drive uses 16 bits as shown below. These bits
are application specific.
Table 24. Binary Bits and Corresponding Outputs
Notes
1
Not for use.
2
Net Cntrl.
Table 25. Speed Reference
This is the Reference 1 to the VFD. Used normally as Speed
reference.
Process Data In 1 to 8
Process Data In values 1 to 8 can be used in applications for
various purposes.
Process Data Out
This register range is normally used to fast monitoring of the
VFD. Process Data Out is located in range ID 2101–2199.
See table below.
Table 26. Fieldbus Basic Output Table
Table 27. Status Word
Information about the status of the device and messages is
indicated in the Status Word. The Status Word is composed
of 16 bits that have the following meanings.
Table 28. Status Word Bit Descriptions
Table 29. Speed Reference
This is the Actual Speed of the motor.
ID Modbus Register Group Range/Type
2001 32001, 42001 FB Control Word Binary coded
2002 32002, 42002 FB General Control Word Binary coded
2003 32003, 42003 FB Speed Reference 0–100.00%
2004 32004, 42004 FB Process Data In 1 Integer 16
2005 32005, 42005 FB Process Data In 2 Integer 16
2006 32006, 42006 FB Process Data In 3 Integer 16
2007 32007, 42007 FB Process Data In 4 Integer 16
2008 32008, 42008 FB Process Data In 5 Integer 16
2009 32009, 42009 FB Process Data In 6 Integer 16
2010 32010, 42010 FB Process Data In 7 Integer 16
2011 32011, 42011 FB Process Data In 8 Integer 16
15 14 13 12 11 10 9 8 7 6543 2 1 0
11111122
BYS
1111
F_RST DIR RUN
151413121110987654321 0
MSB——————————————LSB
ID Modbus Register Group Range/Type
2101 32101, 42101 FB Status Word Binary coded
2102 32102, 42102 FB General Status Word Binary coded
2103 32103, 42103 FB Actual Speed Hz
2104 32104, 42104 FB Process Data Out 1
2105 32105, 42105 FB Process Data Out 2
2106 32106, 42106 FB Process Data Out 3
2107 32107, 42107 FB Process Data Out 4
2108 32108, 42108 FB Process Data Out 5
2109 32109, 42109 FB Process Data Out 6
2110 32110, 42110 FB Process Data Out 7
2111 32111, 42111 FB Process Data Out 8
15 14 13 12 11 10 9 8
7 6 5 4 3 2 1 0
————————
RUNEN BYS AREF WARN FLT DIR RUN RDY
Bit
Description
Value = 0 Value = 1
0 Not Ready Ready
1 STOP RUN
2 Clockwise Counterclockwise
3 — Faulted
4— Warning
5 Ref. frequency not reached Ref. frequency reached
6 Bypass not activated Bypass activated
7 Run disable Run Enable
8 Not in use Not in use
9–15 Not in use Not In use
151413121110987654321 0
MSB——————————————LSB