IAI America ASEL User Manual

Page 219

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Part 2 Programs

Chapter 3 Explanation of Commands

197

Part 2 Programs

z

WZNO (Wait for zone ON, with OR)

Command, declaration

Extension condition

(LD, A, O, AB, OB)

Input condition

(I/O, flag)

Command,

declaration

Operand 1

Operand 2

Output

(Output, flag)

Optional

Optional

WZNO

Zone

number

Axis

pattern

CP

[Function] Wait for the zone status of any of the axes (OR) specified by the axis pattern in operand 2 to

become ON (inside zone) with respect to the zone specified in operand 1.

(Note 1)

The zone status of axes not yet completing home return will remain OFF (outside zone).

(Note 2)

A maximum of four areas can be set as zones for each axis (“Axis-specific parameter Nos.

86 to 97”).

(Note 3)

Zone output can be specified using “Axis-specific parameter Nos. 88, 91, 94 and 97”

irrespective of this command.

[Example 1]

WZNO

1

11

If the parameters are set as follows, the program

will wait until the zone status of axes 1 or 2

becomes ON (inside the shaded area shown in the

diagram below).

[Example 2]

The axis pattern can be specified indirectly using a variable.

When the command in [Example 1] is rephrased based on indirect specification using

a variable:

11 (binary) o 3 (decimal)

LET

5

3

Assign 3 to variable 5.

WZNO

1

*5

Axis 1

Axis 2

“Axis-specific parameter No. 86, Zone 1 max.”

(Value is set in units of 0.001 mm)

300000

200000

“Axis-specific parameter No. 87, Zone 1 min.”

(Value is set in units of 0.001 mm)

150000

100000

The program will proceed to the next step if both axes

1 and 2 are inside the shaded area.

Axis 2

Axis 1

200

100

150

300

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