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Flexible NC programming

1.5 Precision correction on comparison errors (TRUNC)

Job planning

Programming Manual, 07/2010, 6FC5398-2BP40-0BA0

Examples

Example 1: Precision considerations

Program code Comments

N40 R1=61.01 R2=61.02 R3=0.01 ; Assignment of initial values

N41 IF ABS(R2-R1) > R3 GOTOF ERROR ; Jump would have been executed up

until now

N42 M30 ; End of program

N43 ERROR: SETAL(66000) ;

R1=61.01 R2=61.02 R3=0.01 ; Assignment of initial values

R11=TRUNC(R1*1000) R12=TRUNC(R2*1000)

R13=TRUNC(R3*1000)

; Accuracy correction

IF ABS(R12-R11) > R13 GOTOF ERROR ; Jump is no longer executed

M30 ; End of program

ERROR: SETAL(66000) ;

Example 2: Calculate and evaluate the quotient of both operands

Program code Comments

R1=61.01 R2=61.02 R3=0.01 ; Assignment of initial values

IF ABS((R2-R1)/R3)-1) > 10EX-5 GOTOF ERROR ; Jump is not executed

M30 ; End of program

ERROR: SETAL(66000) ;

Siemens SINUMERIK 828D Programming Manual

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