Watlow D4T Data Logger
•
74
•
Chapter 5 Function Reference
Down
This function counts down from the load value. The count is decremented by applying a signal
to CNT. OUT turns on when the count equals the target value. OUT turns off and the count is
set equal to the load value by RST (reset).
Signals
Direction
Label
Type
Function
Receivers
CNT
Digital Deccrements the count
RST
Digital Resets the count to the load value
Transmitters OUT
Digital On when the count equals the target value
Function
To decrement the count with the CNT, set Function to Down.
Target Value
Set the count value at which OUT turns on.
Range: 0 to 9,999
Load Value
Set the value to which the Count parameter is set each time the data logger is powered up
and whenever the counter is reset by RST.
Range: 0 to 9,999
Latching
Select the behavior for the output when Count exceeds the Target Value.
Options:
• Yes
: output is latched on once the count reaches the target value and turns off only
when the counter is reset
• No
: the output is on only when the count equals the target value. Additional counts
cause the output to turn off
Count Active Level
Set which state changes at CNT are counted.
Options:
• Both
: the count decrements when CNT changes from on to off and when it changes
from off to on
• High
: the count decrements only when CNT changes from off to on
• Low
: the count decrements only when CNT changes from on to off
Reset Active Level
Set which state change at RST sets Count equal to Load Value.
Options:
• High
: off to on
• Low
: on to off
