Watlow D4T Data Logger
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Chapter 5 Function Reference
Off
The output follows the top input. A filter and offset may be applied to the output value. The
output has the units of the signal connected to the top input link.
Signals
Direction
Label
Type
Function
Receiver
- - - - Analog
Value used for the output
Transmitter - - - - Analog
The filtered input plus the offset
Function
To filter and/or add an offset to a signal, set Function to
Off
.
Offset
Adjustment added to the input.
Range: -99,999.000 to 99,999.000
Filter
Set the amount of filtering to apply. Filtering smooths signal fluctuations. Increase the time to
increase filtering. Excessive filtering slows the function’s response.
Range: 0.0 to 60.0 seconds
Sensor Backup
This function passes the first input that has no error as the output. The inputs are considered
as backups in numerical order. If input 1 has no error the output follows input 1. If input 1 has
an error and input 2 does not, the output follows input 2 and so on. Only inputs connected to
a source are considered as backups. A filter and offset may be applied to the output. The out-
put has the same units as the selected input.
Signals
Direction
Label
Type
Function
Receivers
1
Analog
Primary input
2
Analog
First backup
3
Analog
Second backup
4
Analog
Third backup
Transmitter - - - - Analog
The first input that has no error, filtered, plus the offset
Function
To automatically switch to the next of up to three alternate inputs when a sensor fails, set
Function to
Sensor Backup
.
Offset
Adjustment added to the output.
Range: -99,999.000 to 99,999.000