Watlow D4T Data Logger
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Chapter 5 Function Reference
Scale High
Set the electrical signal level at which the Range High setting is the desired indicated process
value. Scale High and Range High are the coordinates of a point on the line that relates the
electrical signal to the conditioned process value produced by this block. Consult the hard-
ware specifications for the signal range supported by the specific hardware.
Use to set maximum value of the process range in electrical units.
Range: -100.0 to 1000.0 VDC
-100.0 to 1000.0 mVDC
Range Low
Set the process value to be indicated when the electrical signal is equal to the Scale Low
setting. Scale Low and Range Low are the coordinates of a point on the line that relates the
electrical signal to the conditioned process value produced by this block.
Use to set the minimum value in process units.
Range: -99,999.000 to 99,999.000°F or units
-55,555 to 55,555°C
Range High
Set the process value to be indicated when the electrical signal is equal to the Scale High set-
ting. Scale High and Range High are the coordinates of a point on the line that relates the
electrical signal to the conditioned process value produced by this block.
Use to set the maximum value in process units.
Range: -99,999.000 to 99,999.000°F or units
-55,555 to 55,555°C
Process Error Enable
Set this parameter to enable low scale input error detection and response. Process inputs do
not have intrinsic open/short detection. To enable detection of process errors set this param-
eter to Low.
Options:
Off, Low
Process Error Low Value
When Process Error Enable is set to Low, set the minimum electrical signal level that is con-
sidered a good measurement. If the signal level to the hardware drops below this value, an
error will be triggered.
Range: -100.0 to 1000.0 VDC
-100.0 to 1000.0 mVDC
Display Precision
Set how many decimal places are displayed for the process value and associated parameters
such as set points.
Options:
Whole, Tenths, Hundredths, Thousandths
