Watlow F4T • 111 • Chapter 5 Function Reference
Tolerance
Use Tolerance to set how precisely A and B must match to be considered equal. For example,
with Tolerance set to 2, the values 10 and 12 are considered equal, but 10 and 12.5 are not.
Range: 0 to 99,999
Error Handling
When an error exists on any receiver, the function cannot definitively determine the result of
the comparison and an error will be generated. Use Error Handling to select the output's val-
ue and error status.
Options:
• True Good: outputs value is true (on) with no error
• True Bad: outputs value is true (on) and has an error
• False Good: outputs value is false (off) with no error
• False Bad: outputs value is false (off) and has an error
Less or Equal
The output (T/F) is on when receiver A is less than or equal to B. See Tolerance below.
Signals
Direction Label Type Function
Receiver
A Analog Signal to be compared to B
B Analog Signal to be compared to A
Transmitter T/F Digital
On when A is less than or equal to B and within tolerance,
otherwise off
Function
To test if A is less than or equal to B, set Function to Less or Equal.
Tolerance
Use Tolerance to set how precisely A and B must match to be considered equal. For example,
with Tolerance set to 2, the values 10 and 12 are considered equal, but 10 and 12.5 are not.
Range: 0 to 99,999
Error Handling
When an error exists on any receiver the function cannot definitively determine the result of
the comparison and an error will be generated. Use Error Handling to select the output's val-
ue and error status.
Options:
• True Good: outputs value is true (on) with no error
• True Bad: outputs value is true (on) and has an error
• False Good: outputs value is false (off) with no error
• False Bad: outputs value is false (off) and has an error
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