Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 82

Common elements
The following table lists the common elements that can be used in FBD/LD programs.
Item
*1
Jump
*1
Jump label
Connector
*1
Return
Comment
*1 These elements cannot be used in the Zoom editor of SFC programs.
■ Jump element
• If the timer whose coil is on is jumped, the time cannot be measured correctly.
• A jump label can be located before the jump element in the program sequence. If located, create a program so that the
watchdog timer setting value is not exceeded. (How to exit from a loop must be considered.)
• Specify a pointer type local label for a jump element and a jump label. The pointer devices cannot be used.
• The CJ, SCJ, and JMP instructions (for pointer branch) cannot be used. Use a jump element when jump processing is
required.
• Processing cannot be jumped to/from the outside of the program block.
Jump related operation
Jumping to the outside of the program block
Jumping from the outside of the program block
Calling a subroutine program
Being called as a subroutine program
*1 Branching by using the BREAK instruction is included.
7 FBD/LD
80
7.1 Configuration
Description
Jumps the execution processing to a jump element. Processing between this element and a jump
label is not performed.
Whether to perform jump processing or not is controlled by inputting on/off information to the
element.
On: Jump processing performed
Off: Jump processing not performed
A jump destination of a jump element in the same program. When the jump processing is
performed, the program continues from the processing located after the jump label.
Used as a substitute for a connection line.
Processing moves to a connector element used as a pair.
One or more input connectors can be used as a pair of one output connector.
Stops the execution processing after this element. Use the element not to execute the program,
functions, and function blocks after the element.
Whether to perform return processing or not is controlled by inputting on/off information to the
element.
On: Return processing performed
Off: Return processing not performed
Used to write a comment.
*1
*1
Availability
Not supported
Not supported
Supported
Not supported