Watlow D4T Data Logger
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Chapter 5 Function Reference
Signals
Direction
Label
Type
Function
Receivers
- - - - Digital
Input to logic function
- - - - Digital
Input to logic function
- - - - Digital
Input to logic function
- - - - Digital
Input to logic function
- - - - Digital
Input to logic function
- - - - Digital
Input to logic function
- - - - Digital
Input to logic function
- - - - Digital
Input to logic function
Transmitter - - - - Digital
True when at least one of the inputs is false, otherwise
false
Function
To detect when at least one inputs is false, set Function to
Nand
.
Error Handling
Use Error Handling to select the output's value and error status when the function cannot de-
finitively determine the result.
Options:
• True Good
: output's value is true (on) with no error
• True Bad
: output's value is true (on) and has an error
• False Good
: output's value is false (off) with no error
• False Bad
: output's value is false (off) and has an error
Equal To
If all the inputs are false (off, 0%) or all the inputs are true (on,
100%), the output is true (on, 100%). Otherwise, the output is
false (off, 0%).
Only connected inputs are considered by the logic operation; in-
puts that are not connected are ignored. The truth table at the
right illustrates the outcomes for three inputs.
Inputs
Output
FFF
T
FFT
F
FTF
F
FTT
F
TFF
F
TFT
F
TTF
F
TTT
T
F = False (0%, off)
T = True (100%, on)