Technical Bulletin
Modbus RTU On-Board Communications
PowerXL DG1 Series VFD MN040010EN—May 2014 www.eaton.com 15
Process Data Out 1 to 8
Process Data Out values 1 to 8 can be used in application for
various purposes. See DG1 application manual for what
these values can be set to.
Process Data OUT (Slave
R
Master)
The fieldbus master can read the AFD’s actual values using
process data variables. Standard, Pump and Fan Control, PID
control and Multi-Purpose applications use process data as
follows.
Table 30. Process Data OUT
Process Data IN (Master
R
Slave)
Control Word, Reference and Process Data are used with
All-in-One applications as follows.
Table 31. Process Data IN
Startup Test
Select Fieldbus (Bus/Comm) as the active control and
reference place.
1. Set FB control word (Modbus Address 42000) value to
1hex.
2. DG1 status is RUN.
3. Set FB Speed reference (Modbus Address 42002) value
to 5000 (=50.00%).
4. The Actual value is 5000 and the DG1 output frequency
is 50.00%.
5. Set FB control word (Modbus Address 42000) value to
0hex.
6. DG1 status is STOP.
ID Data Value Unit Scale
2104 Process Data OUT 1 –32768~32767 — —
2105 Process Data OUT 2 –32768~32767 — —
2106 Process Data OUT 3 –32768~32767 — —
2107 Process Data OUT 4 –32768~32767 — —
2108 Process Data OUT 5 –32768~32767 — —
2109 Process Data OUT 6 –32768~32767 — —
2110 Process Data OUT 7 –32768~32767 — —
2111 Process Data OUT 8 –32768~32767 — —
ID Data Value Unit Scale
2003 Reference Speed Reference Hz 0.01
2001 Control Word — —
2004 Process Data IN1 Set point / Feedback / Feedforward for PID % 0.01%
2005 Process Data IN2 Set point / Feedback / Feedforward for PID % 0.01%
2006 Process Data IN3 Set point / Feedback / Feedforward for PID % 0.01%
2007 Process Data IN4 Set point / Feedback / Feedforward for PID % 0.01%
2008 Process Data IN5 Set point / Feedback / Feedforward for PID % 0.01%
2009 Process Data IN6 Set point / Feedback / Feedforward for PID % 0.01%
2010 Process Data IN7 Set point / Feedback / Feedforward for PID % 0.01%
2011 Process Data IN8 Set point / Feedback / Feedforward for PID % 0.01%