IAI America XSEL-KE - Manual (Page 193)

178
Part 4 Commands
1.13 Structural IF
z IFXX (Structural IF)
Command, declaration
Extension condition
(LD, A, O, AB, OB)
Input condition
(I/O, flag)
Command,
declaration
Operand 1 Operand 2
Output
(Output, flag)
Optional Optional IFXX
Variable
number
Data CP
[Function] Compare the content of the variable specified in operand 1 with the value specified in
operand 2, and proceed to the next step if the condition is satisfied.
If the condition is not satisfied, the program will proceed to the step next to the corresponding
ELSE command, if any, or to the step next to the corresponding EDIF command.
If the input condition is not satisfied and the IFXX command is not executed, the program will
proceed to the step next to the corresponding EDIF.
A maximum of 15 nests are supported when ISXX and DWXX are combined.
IFXX
EQ Operand 1 = Operand 2
NE Operand 1 z Operand 2
GT Operand 1 > Operand 2
GE Operand 1 t Operand 2
LT Operand 1 < Operand 2
LE Operand 1 d Operand 2
[Example 1] 600 IFEQ 1 1 Select an axis.
IFGE 2 0 Select a moving direction.
JFWN 01 5 Move axis 1 forward.
ELSE
JBWN 01 5 Move axis 1 backward.
EDIF
ELSE
IFLT 2 0 Select a moving direction.
JBWN 10 5 Move axis 2 backward.
ELSE
JFWN 10 5 Move axis 2 forward.
EDIF
EDIF
  -RJE\VHOHFWLQJD[LVD[LVE\YDULDEOHDQGIRUZDUGEDFNZDUG ± E\
variable 2.
Nothing will happen if flag 600 is OFF, in which case the program will proceed to
the step next to the last EDIF.
(Note) Using a GOTO command to branch out of or into an IFXX-EDIF syntax is prohibited.