Multitech MT2834BL Specifikace stáhnout pdf (Strana 123)

117

CREATING MACROS • MACRO EXAMPLES

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OR in an IF/THEN Statement

This example shows how a macro can

examine a situation, then choose the

appropriate course of action. The first line

sets an individual variable “X.” This line is

important because it enables the macro to

recognize whether or not it has already

taken some kind of action. The first “IF”

statement checks Status Channel 2. If the

reading on this channel is “High,” then the

macro issues Commands 16b and 12a,

and changes the individual variable to X =

1. If the reading on Status Channel 2 is not

“High,” the “IF” statement ends without

issuing the commands or changing the

variable.

The next “IF” statement checks the

individual variable. IF X = 1, then

commands have been issued, the “IF”

statement is skipped and the macro ends.

If X = 0 still, then the “IF” statement

continues execution. Here another “IF”

statement checks Status Channel 5. If the

reading on this channel is “High,” the macro

issues Commands 16b and 12a, then ends

the macro.

The second example shows how the same

results can be achieved by the use of the

"OR" statement in an “IF/THEN” command.

Or In If/Then Statement Macro

Or in If/Then Statement Macro

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Multitech MT2834BL Specifikace Strana 123