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78(96) Control Keypad Honeywell
HoneywellHoneywell
Honeywell
7
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. Modbus register Name Scale Type
2101 32101, 42101 FB Status Word - Binary coded
2102 32102, 42102 FB General Status Word - Binary coded
2103 32103, 42103 FB Actual Speed 0,01 %
2104 32104, 42104 Motor speed 0,01 +/- Hz
2105 32105, 42105 Motor speed 1 +/- Rpm
2106 32106, 42106 Motor current 0,1 A
2107 32107, 42107 Motor Torque 0,1 +/- % (of nominal)
2108 32108, 42108 Motor Power 0,1 +/- % (of nominal)
2109 32109, 42109 Motor Voltage 0,1 V
2110 32110, 42110 DC Voltage 1 V
2111 32111, 42111 Active Fault - Fault code
Input Process data
Addr. Modbus register Name Scale Type
2001 32001, 42001 FB Control Word - Binary coded
2002 32002, 42002 FB General Control Word - Binary coded
2003 32003, 42003 FB Speed Reference 0,01 %
2004 32004, 42004 PID Control Reference 0,01 %
2005 32005, 42005 PID Actual Value 0,01 %
2006 32006, 42006 - - -
2007 32007, 42007 - - -
2008 32008, 42008 - - -
2009 32009, 42009 - - -
2010 32010, 42010 - - -
2011 32011, 42011 - - -