Sel language – IAI America DS-S-C1 User Manual
Page 82
80
12. SEL Language
[Function]
Compares the contents of the variable in operand 1 and the value in operand 2. When the condition is estab-
lished, the program proceeds to the next step. When the condition is not established, if there is a
corresponding ELSE command, the program proceeds to the next step after that. If not, it proceeds to the next
step after the corresponding EDIF command. When the input condition is not established and there is no IF
XX
command executed, the program proceeds to the step following the corresponding EDIF. Up to 15 levels of
nesting are available when IS
XX
and DW
XX
are combined.
12.14
Structured IF Commands
IF
XX
EQ
· · ·
Operand 1 = Operand 2
NE
· · ·
Operand 1
≠
Operand 2
GT
· · ·
Operand 1 > Operand 2
GE
· · ·
Operand 1
≥
Operand 2
LT
· · ·
Operand 1 < Operand 2
LE
· · ·
Operand 1
≤
Operand 2
[Example]
600
IFEQ
1
1
Select axis
IFGE
2
0
Select moving direction
JFWN
01
5
Move Axis 1 forward
ELSE
JBWN 01
5
Move Axis 1 backward
EDIF
ELSE
IFNE
2
1
Select moving direction
JFWN
10
5
Move Axis 2 forward
ELSE
JBWN 10
5
Move Axis 2 backward
EDIF
EDIF
Variable 1 selects Axis 1 or Axis 2. Variable 2 selects forward or backward to jog.
When flag 600 is OFF, nothing is done and the program proceeds to the step after the last EDIF.
*Do not use GOTO (TAG) in between IFXX and EDIF.
●
IFXX (Structured IF)
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