4 NX12 RTU Firmware Functions
The features below describe the functionality offered by the latest version of NX12
firmware at the time of writing.
4.1 Clock
The RTU has an internal Real Time Clock (RTC). The clock is synchronised with the
iHost system clock on a regular basis.
Date/time stamping in Event and System logs is recorded to 10ms in granularity.
4.2 Inputs / Outputs
There are 16 digital inputs. These can be individually configured to operate as
either a Binary Input or as 16-bit Counter Input.
There are 8 analogue inputs with 8-bit resolution.
There are 8 output lines.
The RS485 serial port is used to collect additional data from external devices via
the Modbus RTU protocol – contact Nortech for a list of supported devices.
4.3 Auxiliary Supply On/Off
The incoming auxiliary supply line is monitored. The default setting is to date/time
stamp changes of state (loss / restoration) and to immediately report them to the
iHost system.
A configurable debounce timer can be used to extend the period that the auxiliary
supply must change state before an event is logged and reported.
4.4 Binary Inputs
The following features are supported and remotely configured for each input
individually:
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