Omron CJ - PROGRAMMING MANUAL 12-2009 Programming Manual page 104

Precautions
Subroutine
Subroutine Not possible.
IL - ILC OK
Step ladder Not possible.
section
FOR - NEXT OK
loop
JMP0 - JME0 OK
Block pro- OK
gram section
Subroutines
Instructions Not Available
in Subroutines
64
Instruction Combinations
The following table shows which of the special instructions can be used inside
other program sections.
IL - ILC Step ladder
section
Not possible. Not possible.
Not possible. Not possible.
OK Not possible.
OK Not possible.
OK Not possible.
OK OK
Note Instructions that specify program areas cannot be used for programs in other
tasks. Refer to 4-2-2 Task Instruction Limitations for details.
Place all the subroutines together just before the END(001) instruction in all
programs but after programming other than subroutines. (Therefore, a subrou-
tine cannot be placed in a step ladder, block program, FOR - NEXT, or JMP0 -
JME0 section.) If a program other than a subroutine program is placed after a
subroutine program (SBN to RET), that program will not be executed.
The following instructions cannot be placed in a subroutine.
Function
Process Step Control
Note Block Program Sections
A subroutine can include a block program section. If, however, the block pro-
gram is in WAIT status when execution returns from the subroutine to the
main program, the block program section will remain in WAIT status the next
time it is called.
FOR - NEXT
section loop
Not possible.
OK
Not possible.
OK
Not possible.
Not possible.
Program
Subroutine
Program
Subroutine
Mnemonic
STEP(008)
SNXT(009)
Section 2-2
JMP0 - JME0 Block program
section section
Not possible. Not possible.
OK Not possible.
OK Not possible.
OK Not possible.
Not possible. Not possible.
OK Not possible.
Instruction
Define step ladder section
Step through the step lad-
der