Delta DVP-ES2/EX2/SS2/SA2/SX2/SE Program Example 1 Applying Hardware High Speed Counter, Dhsz

3. Instruction Set

DHSZ instruction. Also, when DHSCS uses I070 or I080, comparators B3 and B4 are no longer available for DHSZ instruction. If comparators are used repeatedly, the syntax error will be detected on the instruction behind.

¾For DVP-SE, if DHSZ instruction uses hardware comparators, two hardware comparators are used. DHSCS instruction and DHSCR instruction can not use the same hardware comparators.

Program Example 1: (Applying Hardware High Speed Counter)

6.When D is specified as Y0, then Y0~Y2 will be occupied automatically.

7.When DHSZ is executed, the instruction compares the current value in C246 with the upper/lower bound (1500/2000) of the comparison zone, and Y0~Y2 will be ON according to

the comparison result.

M1000

DCNT	C246	K20000
DHSZ	K1500	K2000 C246	Y0

Y0

When current value of C246 < K1500, Y0=On

Y1

When K1500 < current value of C246 < K2000, Y1=On

Y2

When current value of C246 > K2000, Y2=On

Program Example 2: (Applying DHSZ instruction for performing ramp down operation)

8.C251 is AB-phase high speed counter. When X10 = ON, DHSZ compare the present value with K2000. Present value≦K2000, Y10 = ON.

9.When X10 = OFF, Y10~Y12 are reset.

X10

RST C251

ZRST Y10 Y12

M1000

DCNT C251 K10000

X10

DHSZ K2000 K2400 C251 Y10

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