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Turbo PMAC/PMAC2 Software Reference

Turbo PMAC Program Command Specification 448

 {expression} is a mathematical expression representing the value to be ORed with this M-

variable.

This form is equivalent to M{data}=M{data}|{expression}, except that the bit-by-bit OR and

the assignment of the resulting value to the M-variable do not happen until the start of the following servo

command. The expression itself is evaluated when the program line is encountered, as in a non-

synchronous statement.

Note:

This command may not be used with any of the thumbwheel-multiplexer forms of

M-variables (TWB, TWD, TWR, or TWS), or with any of the double-word forms

(L, D, or F).

Remember that if this M-variable is used in further expressions before the next

move in the program is started, the value assigned in this statement will not be

received.

Examples:

M20|=$01 ; Set low bit of byte M20, leave other bits

M875|=$FF00 ; Set high byte, leaving low byte as is

M(Q5)|=Q8 & $F

See Also:

How Turbo PMAC Executes a Motion Program, Synchronous Variable Assignment (Writing and

Executing Motion Programs)

Program Commands M{data}=, M{data}==, M{data}&=, M{data}^=

M{data}^={expression}

Function: M-Variable Synchronous XOR-Equals Assignment

Type: Motion program (PROG and ROT)

Syntax: M{data}^={expression}

where:

 {data} is a constant, or an expression in parentheses, for an integer value from 0 to 8191

representing the M-variable number;

 {expression} is a mathematical expression representing the value to be XORed with this M-