Down Counter - Mitsubishi Melsec-Q Series Structured Programming Manual

5.11.2

Down counter

CTD(_E)
Structured ladder
CTD_E
EN ENO
s1 d1
s2 d2
n
Input argument, EN:
Executing condition (TRUE: Execution, FALSE: Stop)
s1: Count signal input
s2: Count reset
n:
Count start value
Output argument, ENO: Output status (TRUE: Normal, FALSE: Error or stop)
d1: Count match output
d2: Count value
Function
Operation processing
Counts down (-1)
sets the initial value for subtraction.
n
turns ON when count value reaches 0.
d1
When is turned ON,
s2
.
d2
ST
ENO:= (EN, s1, s2, n, d1, d2);
CUD_E
when is turned ON.
s1
d2
turns OFF and initial value for subtraction
d1
_E: With EN/ENO
indicates any of the following
functions.
CTD
:Bit
:Bit
:Bit
:Word (signed)
:Bit
:Bit
:Word (signed)
n
5.11 Standard Counter Function Blocks
5.11.2 Down counter
CTD(_E)
CTD(_E)
High
Performance
Universal
UD
CTD_E
is set for count value
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