INDEX
Document code: DPD00899A
Date 19.01.2012
1.
GENERAL ........................................................................................................................... 3
2.
RS-485 OPTION BOARD TECHNICAL DATA ........................................................................ 4
2.1
General ......................................................................................................................................... 4
3.
RS-485 FIELDBUS BOARD LAYOUT AND CONNECTIONS ................................................... 5
3.1
RS-485 OPTC2 option board ......................................................................................................... 5
3.2
RS-485 OPTC8 option board ......................................................................................................... 6
3.3
Grounding ..................................................................................................................................... 7
3.3.1
Grounding by clamping the cable to the converter frame .................................................7
3.3.2
Grounding only one point on the net ..................................................................................9
3.3.3
Grounding jumper X1 ....................................................................................................... 10
3.4
Bus terminal resistors................................................................................................................ 11
3.5
Bus Biasing ................................................................................................................................. 12
3.6
LED indications ........................................................................................................................... 13
4.
INSTALLATION OF VACON NX RS-485 BOARD ................................................................. 14
5.
COMMISSIONING .............................................................................................................. 16
5.1
Fieldbus board parameters ........................................................................................................ 16
6.
MODBUS ........................................................................................................................... 19
6.1
Modbus RTU protocol, introduction ............................................................................................ 19
6.1.1
Supported functions ......................................................................................................... 21
6.1.2
Exception responses ........................................................................................................ 23
6.2
Modbus interface ........................................................................................................................ 25
6.2.1
Modbus registers ............................................................................................................. 25
6.2.2
Process data .................................................................................................................... 25
6.2.3
Process data in ................................................................................................................ 26
6.2.4
Process data out .............................................................................................................. 27
6.2.5
Parameters ...................................................................................................................... 30
6.2.6
Actual values .................................................................................................................... 30
6.2.7
Example messages .......................................................................................................... 31
6.3
Start-up test ............................................................................................................................... 33
7.
METASYS N2 ..................................................................................................................... 34
7.1
Metasys N2 Protocol Introduction .............................................................................................. 34
7.2
Metasys N2 interface .................................................................................................................. 34
7.2.1
Analogue Input (AI) .......................................................................................................... 34
7.2.2
Binary Input (BI) ............................................................................................................... 34
7.2.3
Analogue Output (AO)....................................................................................................... 35
7.2.4
Binary Output (BO) ........................................................................................................... 35
7.2.5
Internal Integer (ADI) ....................................................................................................... 35
7.3
N2 POINT MAP ............................................................................................................................ 36
7.3.1
Analogue Inputs (AI) ......................................................................................................... 36
7.3.2
Binary Inputs (BI) ............................................................................................................. 37
7.3.3
Analogue Outputs (AO) ..................................................................................................... 37
7.3.4
Binary Outputs (BO) ......................................................................................................... 38
7.3.5
Internal Integers (ADI) ..................................................................................................... 38
8.
FAULT TRACKING ............................................................................................................. 39
APPENDIX 1 ............................................................................................................................................ 40
