Reference Manual

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Turbo PMAC/PMAC2 Software Reference

Turbo PMAC Program Command Specification 414

On-line command DEFINE TBUF

Program commands TSEL, ADIS, IDIS, IROT, TINIT

B{data}

Function: B-Axis Move

Type: Motion program (PROG and ROT)

Syntax: B{data}

where:

 {data} is a floating-point constant or expression representing the position or distance in user units

for the B-axis

This command causes a move of the B-axis. (See {axis}{data} description, above.) If it follows a

subroutine call (explicit or with PRELUDE) on a program line, it can be used instead to pass its value to

the subroutine through use of the READ command.

Examples:

B20

B(Q15)

A25 B10 Z35

B(20*COS(Q5))

CALL20 B-7.701

See Also:

Program commands {axis}{data}, B, C, U, V, W, X, Y, Z, CALL, PRELUDE, READ

Program commands {axis}{data}, A, C, U, V, W, X, Y, Z, CALL, READ

BLOCKSTART

Function: Mark Start of Stepping Block

Type: Motion program (PROG and ROT)

Syntax: BLOCKSTART

BSTART

This statement allows for multiple moves to be done on a single STEP command. Execution on a STEP

command will proceed until the next BLOCKSTOP statement in the program (without BLOCKSTART,

only a single servo command is executed on a STEP command). Also, if Isx92=1 (move blending

disabled), all moves between BLOCKSTART and BLOCKSTOP will be blended together. This does not

affect how a program is executed from a RUN command if Isx92=0.

This structure is useful particularly for executing a single sequence of PVT mode moves, because the

individual segments do not end at zero velocity, making normal stepping very difficult.

Examples:

For the program segment:

BLOCKSTART

INC

X10:100

X20:100

X10:0

BLOCKSTOP

All four move segments will be executed on a single S command.