Ronan X501NET - Manual (Page 36)

Chapter 2 - Interface
X501NET System Configuration Manual © 2008 Ronan Engineering Company 30
2.8.2.11 Alarm Time Constant Field
The Alarm Time Constant Field is a pull down menu. The possible values of this parameter
change depending on the on the filter type selected (see 2.8.2.10).
2.8.2.12 Normal Time Constant Field
The Normal Time Constant Field is a pull down menu. The possible values of this parameter
change depending on the on the filter type selected (see 2.8.2.10).
2.8.2.13 Debounce Time Constant Field
The Debounce Time Constant Field is a pull down menu. The possible values of this
parameter change depending on the on the filter type selected (see 2.8.2.10). The time constant
set by this field is used to filter noise and is applied to the data before the data is filtered.
2.8.2.14 Toggling Interval [ms] Field
The toggling (also called limit) mode is a mode that introduces another state for a point –
toggling. For points that change their state (alarm or normal) too often, either because of sensor
malfunction or the nature of the signal itself, like level switches in a tank with waves, it is
sometimes preferred to report this state only once instead of overfilling the events history with
multiple transitions.
The parameter that controls the toggling mode is the interval during which a number of state
transitions have occurred. The interval is entered in milliseconds and could be up 65536
milliseconds (65 seconds). The number of state changes (trips) is limited to 16.
Once the point enters a toggling mode it will be reported only once and the point will stay in this
state as long as the condition exists, i.e. the number of state trips for the last Toggling Interval
milliseconds is equal or greater than the programmed value. If the condition disappears the point
will be reported to its real state. Of course, if the point still changes state but with lower
frequency all changes will be reported.
2.8.2.15 Toggling Trips Field
See section 2.8.2.14.
2.9 Network Page
The Network page provides a means to view and configure the parameters of the TCP/IP
protocol used by the X501NET.