Vacon NX OPTC2 User Manual

modbus vacon • 25
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6
6.2 Modbus interface
Features of the Modbus-Vacon NX interface:
• Direct control of Vacon NX ( e.g. Run, Stop, Direction, Speed reference, Fault reset)
• Full access to all Vacon NX parameters
• Monitor Vacon NX status (e.g. Output frequency, Output current, Fault code)
6.2.1
Modbus registers
The Vacon variables and fault codes as well as the parameters can be read and written from Modbus.
The parameter addresses are determined in the application. Every parameter and actual value have
been given an ID number in the application. The ID numbering of the parameter as well as the pa-
rameter ranges and steps can be found in the application manual in question. The parameter value
shall be given without decimals. If several parameters/actual values are read with one message, the
adresses of the parameters/actual values must be consecutive.
All values can be read with function codes 3 and 4 (all registers are 3X and 4X reference). Modbus
registers are mapped to drive ID’s as follows:
ID
Modbus register
Group
R/W
1 … 98 40001…40098 (30001…30098) Actual Values 30/1
99 40099 (30099) Fault Code 30/1
101… 1999 40101…41999 (30101…31999) Parameters 30/1
2001…2099 42001…42099 (32001…32099) Process Data In 20/20
2101…2199 42101…42199 (32101…32199) Process Data Out 20/20
Table 9. Index table
6.2.2 Process data
The process data fields are used to control the drive (e.g. Run, Stop , Reference, Fault Reset) and to
quickly read actual values (e.g. Output frequency, Output current, Fault code). The fields are struc-
tured as follows:
Process Data Slave -> Master (max 22 bytes)
ID
Modbus register
Name
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 0…10000 %
2104 32104, 42104 FB Process Data Out 1 See appendix 1
2105
32105, 42105
FB Process Data Out 2
See appendix 1
2106 32106, 42106 FB Process Data Out 3 See appendix 1
2107 32107, 42107 FB Process Data Out 4 See appendix 1
2108 32108, 42108 FB Process Data Out 5 See appendix 1
2109 32109, 42109 FB Process Data Out 6 See appendix 1
2110 32110, 42110 FB Process Data Out 7 See appendix 1
2111 32111, 42111 FB Process Data Out 8 See appendix 1
Table 10.

Vacon NX OPTC2 Specifications

General

Brand	Vacon
Model	NX OPTC2
Category	Industrial Electrical
Language	English