Termination Resistor; Modbus Address Area; Modbus Process Data - Honeywell NXL User Manual

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7.4.8.2

Termination Resistor

The RS-485 bus is terminated with 120 Ω termination resistors in both ends. NXL has a built-in
termination resistor which is switched off as a default. See the jumper selections in chapter 6.2.5.1
7.4.8.3

Modbus address area

The Modbus bus of NXL uses the ID numbers of the application as addresses. The ID numbers can
be found in the parameter tables of the Application manual.
When several parameters/monitoring values are read at a time they must be consecutive. 11
addresses can be read and the addresses can be parameters or monitoring values.
7.4.8.4

Modbus process data

Process data is an address area for fieldbus control. Fieldbus control is active when the value of
parameter 3.1 (Control place) is 2 (=fieldbus). The contents of the process data has been
determined in the application. The following tables present the process data contents in the Multi-
Control Application.
Output Process data
Addr.
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
Input Process data
Addr.
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
Modbus register
32101, 42101
32102, 42102
32103, 42103
32104, 42104
32105, 42105
32106, 42106
32107, 42107
32108, 42108
32109, 42109
32110, 42110
32111, 42111
Modbus register
32001, 42001
32002, 42002
32003, 42003
32004, 42004
32005, 42005
32006, 42006
32007, 42007
32008, 42008
32009, 42009
32010, 42010
32011, 42011
Control Keypad
Name
FB Status Word
FB General Status Word
FB Actual Speed
Motor speed
Motor speed
Motor current
Motor Torque
Motor Power
Motor Voltage
DC Voltage
Active Fault
Name
FB Control Word
FB General Control Word
FB Speed Reference
PID Control Reference
PID Actual Value
-
-
-
-
-
-
Scale Type
- Binary coded
- Binary coded
0,01 %
0,01 +/- Hz
1 +/- Rpm
0,1 A
0,1 +/- % (of nominal)
0,1 +/- % (of nominal)
0,1 V
1 V
- Fault code
Scale Type
- Binary coded
- Binary coded
0,01 %
0,01 %
0,01 %
- -
- -
- -
- -
- -
- -
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