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7 Configuration
Parameter
Decimal places
Start of display
range
End of display
range
Reset signal
?
Save using power
off
Offset
Factor
?
Reset signal
The device can monitor the connection to the Modbus master as a Modbus slave. If the connection is
down (timeout from the master), a digital signal is activated (slave timeout ...). This signal can be used
as a reset signal to set the input to a defined value.
Using the device (slave) to monitor the Modbus connection only makes sense if the external master
writes to the input. If the external master only has read access to the input, this function has no meaning.
Factor
Using a factor makes it possible, for example, to reduce the measured value before further processing
so that the displayed (and registered) value lies within the display range.
Since the display range ends at 99999, a measured value of 100000, for example, can be multiplied by
a factor of 0.001 so that a value of 100 is displayed. The unit must be changed accordingly (e.g.: 100000
kWh = 100 MWh).
The value that was modified by the factor can also be corrected by an offset (correction value).
7.10.1
Limit value monitoring
Limit value monitoring with one or two limit values (alarm 1, alarm 2) can be activated for each external
analog input. In out-of-limit cases, an alarm signal is activated. Depending on the configuration, an entry
is made in the event list or additionally in the alarm list. In the latter case, the alarm/event text is displayed
in the status bar (until another alarm occurs); the collective alarm is enabled, and the plotter trace may
be displayed in a different color.
This limit value monitoring function is independent of the general limit value monitoring values (Config-
uration > Limit value monitoring) and available in addition to them.
122
Selection/settings
Number of pre-decimal and decimal places for the numerical display of the input
value
Even if the number of decimal places is fixed, the format is automatically changed
if needed in order to display all digits before the decimal point.
Auto
XXXXXp
XXXXpX
XXXpXX
XXpXXX
XpXXXX
-99999 to 0 to +99999
-99999 to 100 to +99999
Digital selector
No selection
No
Yes
-99999 to 0 to +99999
-999999999 to 1 to +999999999
Description
Automatic
No decimal place
One decimal place
Two decimal places
Three decimal places
Four decimal places
Lower limit of display range
Upper limit of display range
The reset signal (high active) sets the
analog input to a status of "no input sig-
nal".
If "Yes", the current value is saved upon
switch-off (power off) and is available
again upon switch-on (power on).
Correction value (correction of the dis-
play value by addition or subtraction)
Factor for evaluating the measured value
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