Parker Products COMPAX-M /-S (L) manual Comparative operations

Positioning and control functions

Comparative operations

8.4.24 Comparative operations

Syntax:	IF <single Operand> <compare> <Operand> GOTO xxx
	or
	IF <single Operand> <compare> <Operand> GOSUB xxx
Simple Operand:	a parameter Pxxx or
	a variable 20 Vxxx or
	a status value Sxxx (S1-S15, S30, S40ff)
Operand:	A simple Operand or
	A constant with max. 8 significant digits
Comparison:	<smaller
	>larger
	=equals
	<>	not equal
	<=	equal to/less than
	>=	equal to/greater than
	Depending on the result of the comparison, a GOTO or GOSUB is carried out.
Examples:	IF P40>100 GOTO 234
	IF V030<>P49 GOTO 123
Limitation:	Within the IF query, operations with logic operators (AND, OR) are not possible.

Writing convention of variables (V0-V39) and control parameters (P40-P49)

For reasons of compatibility, a preceding point (full stop) is expected in the syntax for motion commands: e.g.: POSA .P40, ACCEL .V10

The new comparison and arithmetic commands will operate without a preceding point (full stop): e.g.: P41=V10+S1, IF V20 > S2 GOTO 10

8.4.25 Specific processing of data record groups. WAIT START.

	Entry at BDF221: WAIT Ent
WAIT START
	When this instruction is issued, COMPAX interrupts the programming procedure
	until a external START (E5 or via interface) is issued (reaction time <30 ms). For
	shorter reaction times, refer to I15 on Page 151.
Syntax:	WAIT Start

8.4.26 Jump with data record selection [GOTO EXT]

Unit	hardware
Connector	assignment / cable
Technical data
Configuration
Positioning and	control functions
Optimization	functions
Interfaces
Accessories /	options
Status

GOTO EXT

Jump with data record selection via the inputs I9 to I16. Entry at BDF2: GOTO Ent

Data record selection as for GOSUB EXT (see below).

20for variables, see Page 114.

21Applies to the manual terminal BDF2/01

Parameter

list

109

Error