
FANUC PMC-MODEL SD7
Programming Manual
01 01.11.26
Hanaoka
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A-78550E
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3.2.5 DNCTR
Function
The Down Counter (DNCTR) function counts down from a preset
value. The minimum Preset Value (PV) is zero; the maximum present
value is +32,767 counts. When the Current Value (CV) reaches the
minimum value, -32,768, it stays there until reset. When DNCTR is
reset, CV is set to PV. When the power flow input transitions from OFF
to ON, CV is decremented by one. The output is ON whenever CV ≤≤ 0.
Format
DNCTR
R
PV???????
(R)
(EN) (ENO)
ADRS
Parameters
Parameter Data type Meaning
ADRS one-dimensional
WORD array of 3
words
ADRS is the beginning address of a three-
word WORD array:
Word 1: Current Value (CV)
Word 2: Preset Value (PV)
Word 3: Control word
EN BOOL Counter start
R BOOL Reset
PV INT Set value (Preset Value)
ENO BOOL Current Value falls below 0