Contents
1 Safety & notices ....................................................................................... 5
1.1 Safety ............................................................................................... 5
1.2 Qualified users ................................................................................... 5
1.3 Notices .............................................................................................. 5
1.4 Versions ............................................................................................ 5
2 NX12 RTU Description ............................................................................... 6
2.1 Applications ....................................................................................... 6
2.2 Central iHost User Interface ................................................................. 6
2.3 Communications ................................................................................. 6
3 NX12 RTU Set-up Requirements ................................................................. 7
3.1 Auxiliary power supply ........................................................................ 7
3.2 Battery Operation ............................................................................... 7
3.3 USB Port / Field Support Kit ................................................................. 7
4 NX12 RTU Firmware Functions .................................................................... 9
4.1 Clock ................................................................................................ 9
4.2 Inputs / Outputs ................................................................................. 9
4.3 Auxiliary Supply On/Off ....................................................................... 9
4.4 Binary 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
5 NX12 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
6 Installation ............................................................................................ 15
6.1 Qualified Users ................................................................................. 15
6.2 AC Powered Models ........................................................................... 15
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