Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Dcnt, C254 K1000

3. Instruction

Set

API

Mnemonic

Operands

Function

Controllers

97

DCNT

32-bit counter

ES2/EX2 SS2 SA2 SX2

SE

Type

Bit Devices

Word devices

Program Steps

OP

X

Y

M

S

K

H KnX KnY KnM KnS T

C

D

E

F

DCNT: 9 steps

S1

*

S2

*

*

PULSE				16-bit					32-bit
ES2/EX2	SS2	SA2	SX2	ES2/EX2	SS2	SA2	SX2	ES2/EX2	SS2	SA2	SX2
		SE				SE				SE

Operands:

S1: No. of 32-bit counter (C200~C254)

S2: Set value (K-2,147,483,648~K2,147,483,647, D0~D9,999)

Explanations:

1.DCNT is the startup instruction for the 32-bit counters C200 to C254.

2.For general counting up/down counters C200~C231(SS2/SA2/SE/SX2: C200~C232), the present value will plus 1 or minus 1 according to the counting mode set by flags M1200~M1231 when instruction DCNT is executed.

3.For high speed counters C232~C254(SS2/SA2/SE/SX2: C233~C254), when the specified high speed counter input is triggered by pulse, the counters will start counting. For details about high-speed input terminals (X0~X7) and counting modes (count up/down), please refer to section 2.12 C (Counter).

4.When DCNT instruction is OFF, the counter will stop counting, but the count value will not be cleared. Users can use RST instruction to remove the count value and reset the contact, or use DMOV instruction to move a specific value into the register. For high-speed counters C232~C254, use specified external input point to clear the count value and reset the contacts.

Program Example:

Ladder Diagram:

	M0	DCNT C254	K1000
Instruction Code:			Operation:
LD		M0	; Load NO contact M0
DCNT		C254 K1000	; C254 counter setting is K1000

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