Parker Products COMPAX-M /-S (L) manual Absolute positioning Posa, Relative positioning Posr

Operating Instructions	COMPAX-M / -S
Absolute positioning [POSA]
8.4.1 Absolute positioning [POSA]

POSA

POSR

SPEED

ACCEL

OUTPUT

Password

SPEED SYNC

Mark reference

POSR SPEED

POSR OUTPUT

Cam controller

WAIT

GOTO

GOSUB

RETURN

END

POSA

Syntax:

Example:

Additional function:

Reference point is real zero (RZ).

Positioning is executed with the acceleration speed set using ACCEL and the velocity set using SPEED. If these values have not previously been set, substitute values will apply:

SPEED: parameter P2; ACCEL: parameter P6 (see Page 212)

POSA value

Value: figure with two digits after the decimal point (three for inches) in the unit defined in P90; a control parameter (P40..P49) or a variable (V1..V39) e.g. POSA .P40

The range is defined by the software end limits P11 and P12.

N005:	POSA 150.50	Absolute positioning to +150.5 units
N006:	POSA -500	Absolute positioning to -500 units

♦A position approached manually can be transferred as a POSA command into a previously selected data record using "TEACH data record" (via an interface).

♦POSA HOME command via interface triggers "find machine zero".

POSA HOME is not permitted in the COMPAX – program.

When in continuous mode, relative positioning is also adopted with POSA.

REPEAT

8.4.2 Relative positioning [POSR]

IF I..

Comparison

WAIT Start

GOTO /

GOSUB EXT

IF Error/ Stop

Arithmetic

Position monitoring

Idle display

POSR

Syntax:

Example:

The reference point is the current position.

POSR value

Value: two digits after the decimal point (three for inches) in the unit defined in P90; a control parameter (P40..P49) or a variable (V1..V39)

e.g. POSR .P40

The range is defined by the software end limits P11 and P12.

N005: POSR 2000 Relative positioning by +2000

N006: POSR-100.25 Relative positioning by -100.25

Speed monitoring

Engage / disengage brake / final stage

Variable voltage

The positioning commands POSR and POSA can be controlled using binary input I15 "Fast start". This

function is switched on using P18. COMPAX then waits until I15="1" before it executes POSR or POSA (see Page 151).

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