Contents
1Safety & notices....................................................................................... 5
1.1 Safety ............................................................................................... 5
1.2 Qualified users ................................................................................... 5
1.3 Notices.............................................................................................. 5
1.4 Versions ............................................................................................ 5
2NX12 RTU Description............................................................................... 6
2.1 Applications ....................................................................................... 6
2.2 Central iHost User Interface ................................................................. 6
2.3 Communications................................................................................. 6
3NX12 RTU Set-up Requirements................................................................. 7
3.1 Auxiliary power supply ........................................................................ 7
3.2 Battery Operation ............................................................................... 7
3.3 USB Port / Field Support Kit ................................................................. 7
4NX12 RTU Firmware Functions .................................................................... 9
4.1 Clock ................................................................................................ 9
4.2 Inputs / Outputs................................................................................. 9
4.3 Auxiliary Supply On/Off ....................................................................... 9
4.4Binary Inputs ..................................................................................... 9
4.5 Counter Inputs ................................................................................. 10
4.6 Analogue Inputs ............................................................................... 10
4.7 Output Channels............................................................................... 11
4.8 RS485 Modbus ................................................................................. 11
4.9 RTU / Communication Events ............................................................. 11
4.10 Data Log Sizes ............................................................................... 11
4.11 Input monitoring during iHost calls .................................................. 11
4.12 Connection between the RTU and iHost ............................................ 11
4.13 Reconfiguration of the RTU settings.................................................. 12
5NX12 RTU Operation............................................................................... 13
5.1 Cold Start ........................................................................................ 13
5.2 LED Indicators.................................................................................. 13
5.3 RTU connection to the iHost system .................................................... 13
5.4 Call Retry Algorithm.......................................................................... 13
6Installation............................................................................................ 15
6.1 Qualified Users ................................................................................. 15
6.2 AC Powered Models........................................................................... 15
