LG Electronics 120S user manual InstructionHSCST, Hscast, High speed counter Available device

Chapter 7 Usage of Various Functions

7) Instruction(HSCST)

HSCAST

High speed counter

Available device

No. of

Flag

Instruction

M

P

K

L

F

T

C

S

D

#D

integer

steps

Error

Zero

Carry

(F110)

(F111)

(F112)

S

○

SV

○

○

○

○

○

○

○

○

○

○

7/9

○

CV

○

○

○

○

○

○

○

○

Flag set

Designation

S

Channel which is designated at parameter(0~3)

Error

Error flag turns on when designating area is over

SV

Set value (binary 32 bits)

(F110)

Range : (-2,147,483,648 ~ 2,147,483,647)

CV

Current value of HSC stored area

■HSCST S SV CV

(1)Functions

•When input condition turns on, corresponding high speed counter is enabled.

•When input condition turns off, high speed counter stop counting and turns output point off . The current value is retained.

•The high speed counter can counts from -2,147,483,648 to 2,147,483,647(binary 32bits).

•When current value is greater than set value, output point F17*(* is channel number) turns on and it turns off when current value is less than set value.

•If current value is greater than 2,147,483,647, carry flag F18* turns on and and it turns off when input condition turns off.

If HSC designated as ring counter, carry flag is set when current value reaches set value.

•If current value is smaller than -2,147,483,648, borrow flag F19* turns on and and turns off when input condition turns off

If designated as ring counter, if current value is 0, borrow flag is set at next pulse’s rising edge and current value goes ‘set value –1’(in down counter mode)

(2) Error code

Code	Error		Corrective Actions
H’10	Mode setting error		When Ch0 is set as 2-Phase, Ch 1 can’t be used and Ch3 can’t be
			used if Ch2 is set to 2-Phase.
H’11	Ring counter setting error	Adjust the range of ring counter within 2 ~ 2,147,483,647.
H’12	SV2 setting error	Set SV2 greater than SV1 if zone comparison set is selected.
H’13	Ring counter and SV2 setting error		Adjust the range of ring counter within 2 ~ 2,147,483,647 Set SV2
			greater than SV1if zone comparison set is selected

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