Measurement channels on the

Basic

"Measurement channels" configuration section, "Basic" tab (digital mode & counter modes)

1	Freely selectable channel title for the universal inputs
2	Basic settings for the measurement channel
	off	Measurement channel deactivated
	xxx	Analogue- and digital modes

Mode "digital"
3	Inverts the input signal

Modes "Cnt.Day ¹⁾" and "Cnt.Intrvl."
4	Counted measurand of a pulse in the "Imp. unit"
5	Defines the upper scale end of the pointer instruments in reports
6	String that is used as a measurement unit by all of the server display elements [0‑16 8 characters]
7	Number of decimal places that are used by all of the server display elements

¹⁾ The daycounter is reset to the time zone selected via the "time zone" parameter in the "basic settings" configuration section (see Basic settings) at 00:00 hours.

"Measurement channels" configuration section, "Basic" tab (analogue modes)

Modes "0-20 mA", "4-20 mA", "0-2 V" and "0-10 V"
1	Start of the measurement range in the measurement unit
2	End of the measurement range in the measurement unit
3	is used to adjust the zero point(see Additional explanation on the zero point adjustment and installation height of the sensor)
4	indicates the mounting height of the sensor
5	String that is used as a measurement unit by all of the server display elements [0‑16 8 characters]
6	Number of decimal places that are used by all of the server display elements

Tip:

Additional explanation on the zero point adjustment and installation height of the sensor

Assumption: Measurement range of the 4-20 mA pressure sensor 0-5 m

Installation situation of the pressure sensor

1	Installation height: 15 cm	3	Output value of the sensor: 6 cm
2	Pressure sensor	4	Measured fill level: 20 cm

Required configuration
Parameter	Value
Mode	4-20 mA
0 %	0
100 %	5
Trim	-0.01
Sensor offset	0.15
Unit	m

Explanation: When comparing the measured fill level with the output value of the sensor taking the installation height into consideration, it was determined that the value was 1 cm too high. As the "Trim" and "Sensor offset." parameters are added to the scaled measurement value, this error can be balanced out by setting the "Trim" parameter value to -0.01 m.

Configuration

"Measurment channels" configuration section, "Configuration" tab (digital mode & counter modes)

Mode "digital"
1	Time in [ms] during which the signal must remain constant to initiate a level change. Used to suppress brief faults (debouncing).
2	Temporal function in the measurement cycle
	off	Decay deactivated
	up	At least x consecutive measurement values must be "High" for "High" to be recorded.
	down	At least x consecutive measurement values must be "Low" for "Low" to be recorded.
	up&down	At least x consecutive measurement values must be "High" for "High" to be recorded. At least x consecutive measurement values must be "Low" for "Low" to be recorded.

3	Number of measurement values taken into consideration during the decay (max. 64). In theses modes, a measurement value is created upon expiry of the measurement cycle and when the input signal level is changed. The changes to the inputs are monitored at one second intervals.

Mode "Cnt.Day"
1	Time in [ms] during which the signal must remain constant to initiate a level change. Used to suppress brief faults (debouncing).

Mode "Cnt.Intrvl."
1	Time in [ms] during which the signal must remain constant to initiate a level change. Used to suppress brief faults (debouncing).
4	Temporal function in the measurement cycle
	aus	Decay deactivated
	min	The minimum of the last x measurement values is recorded.
	max	The maximum of the last x measurement values is recorded.
	avg	The arithmetic mean of the last x measurement values is recorded.
	med	The median of the last x measurement values is recorded.
	rms	The root mean square of the last x measurement values is recorded.
	sum	The pulses are added up and are not reset every time a measurement value is generated but only after the measurement value has been recorded. This mode is thus recommended if the record interval is longer than the measurement cycle.
5	Number of measurement values taken into consideration during the decay (max. 64). This configuration parameter is not available if "sum" mode was selected for the decay.

Tip: Additional explanation regarding the difference between "Cnt.Day" and "Cnt.Intrvl."

Basic setting		Record interval	4 min.	Recorded value	red line
Basic setting		Measurement cycle	1 min.	Measurement value	blue line

"Cnt.Intrvl." mode: The pulses are added up and reset every time a measurement value is generated.	"Cnt.Day" mode: All of the pulses up to the reset time are added up.
Note on "Cnt.Intrvl." mode: If the record interval is longer than the measurement cycle, by default only the number of pulses registered the last time the measurement value was generated is recorded. If all pulses within a record interval should be collected and recorded, “sum” mode must be selected for the decay.

"Measurement channels" configuration section, "Configuration" tab (analogue modes)

Modes "0-20 mA", "4-20 mA", "0-2 V" and "0-10 V"
1	Time in [ms] during which the analogue signal is averaged for signal smoothing. Used to suppress signal noise (also see Output channels ).
2	Temporal function in the measurement cycle
	off	Decay deactivated
	min	The minimum of the last x measurement values is recorded.
	max	The maximum of the last x measurement values is recorded.
	avg	The arithmetic mean of the last x measurement values is recorded.
	med	The median of the last x measurement values is recorded.
	rms	The root mean square of the last x measurement values is recorded.
3	Number of measurement values taken into consideration during the decay (max. 64).
4	Procedure in the event of measurement range violations
	Ignore	The measurement value is calculated beyond the range limits.
	Silent cutoff	The measurement value is truncated at the range limits.
	NAMUR borders	Mode "0-20 mA": The error value "OF" (overflow) is issued if the measurement value is between 20.1 mA and 21 mA. If the measurement value is above 21 mA, the error value "SC" (short circuit) is issued. Mode "4-20 mA": The error value "OL" (open loop) is issued, if the measurement value is below 3.6 mA. The error value "UF" (underflow) is issued, if the measurement value is between 3.6 mA and 3.9 mA. The error value "OF" (overflow) is issued if the measurement value is between 20.1 mA and 21 mA. If the measurement value is above 21 mA, the error value "SC" (short circuit) is issued. Mode "0-2 V": The error value "OF" (overflow) is issued, if the measurement value is above 2.01 V. Mode "0-10 V": The error value "OF" (overflow) is issued, if the measurement value is above 10.05 V.

Tip: Additional explanation regarding the "NAMUR borders" overflow mode

Mode "0-20 mA"	Mode "4-20 mA"

Mode "0-2 V"	Mode "0-10 V"

Alarms

Note: In the event of a warning or an alarm, an entry is always created in the alarm list and an immediate transmission is initiated. If the warning or the alarm is cancelled again, an immediate transmission follows.

"Measurement channels" configuration section, "Alarms" tab

Mode "digital"
1	A "high" at the universal input triggers a "warning".
2	A "high" at the universal input triggers an "alarm".

All other modes
3	A warning is triggered, if the measurement value drops to or below this value.
4	A warning is triggered, if the measurement value meets or exceeds this value.
5	An alarm is triggered, if the measurement value drops to or below this value.
6	An alarm is triggered, if the measurement value meets or exceeds this value.
7	Hysteresis for all-clear in event of alarm/warning (e.g. Hyst=5 %, alarm or warning at 100 -> all-clear at 95)

Trigger

If an universal input is operated in digital mode, there are two different types of triggers:

Event trigger (RI, XM)
In contrast to the level triggers, the relevant operation (e.g. record immediately) is only executed once when the trigger event occurs. With the help of the "Edge" configuration parameter, it is specified whether the rising, falling or both edges initiate the trigger event.
Level trigger (ON, RA, D1, D2, QX)
A "high" at the universal input initiates the trigger. A "low" at the universal input resets the trigger. The relevant operation (e.g. use alternative record interval) is executed as long as the trigger is active. The option selected via the "Edge" configuration parameter is not relevant to the level trigger. If it is necessary for the trigger to be initiated by a "low" at the universal input and for it to be reset by a "high", the input signal must then be inverted using the "Invert" configuration parameter located in the "Basis" tab.

These two types of triggers are also differentiated in other universal input modes:

Event trigger (RI, XM)
The relevant operation (e.g. record immediately) is only executed once when the trigger event occurs.
Level trigger (ON, RA, D1, D2, QX)
The relevant operation (e.g. use alternative redord interval) is executed as long as the trigger is active.

"Measurement channels" configuration section, "Trigger" tab

	Event trigger:
1	Execute recording immediately
2	Initiate transmission
	Level trigger:
3	Activate online mode
4	The alternative record interval should be used.
5	If this checkbox has been selected, the setpoint on the output channel "RELAY1" of the data logger is controlled using trigger. In doing so, the setpoint entered via the interface is ignored. The normal state of the output channel is "off (low)" and switches to "on (high)" if trigger is active. However, if "Invert" is active for the output channel, the behaviour described above is reversed. See Example explaining how to determine the switching state at the output via trigger.
6	If this checkbox has been selected, the setpoint on the output channel "RELAY2" of the data logger is controlled using the trigger. In doing so, the setpoint entered via the interface is ignored. The normal state of the output channel is "off (low)" and switches to "on (high)" if trigger is active. However, if "Invert" is active, the behaviour described above is reversed.
7	The alternative transmission cycle should be used.

Mode "digital"
8	Event trigger: Selection of the edge at which the trigger should be initiated Level trigger: not relevant
	rising	The rising edge initiates the trigger.
	falling	The falling edge initiates the trigger.
	both	Both edges initiate the trigger.

All other modes
9	Selection if the corresponding action is to be performed upon exceeding or falling below the value entered in the "level" field
	Greater or equal	Event trigger: The trigger is initiated if the measurement value meets or exceeds this value. Level trigger: The trigger is active as long as the measurement value is higher than the level or equal to the level.
	Less or equal	Event trigger: The trigger is initiated if the measurement value drops to or falls below this value. Level trigger: The trigger is active as long as the measurement value is lower than the level or equal to the level.
10	Levels for initiating the trigger. The hysteresis is used to determine the level to reset the trigger.
11	Hysteresis for revoking the trigger (e.g. hyst=5 %, level = greater or equal, trigger at 100 -> all-clear at 95)

Note: If one of the "D1" or "D2" checkboxes has been selected on several measurement channels (this also applies to internal measurement channels), the switching state on the corresponding output channel is changed as soon as the trigger is active on one of the measurement channels, i.e. it is an "or" conjunction.