Table of Contents
Advertisement
4.11.4
JumpN
Description
Nested form of Jump instruction.
A JUMPN instruction causes a portion of the program logic to be bypassed. Program execution
continues at the LABELN specified in the same block. Power flow jumps directly from the JUMPN to
the rung with the named LABELN.
When the Jump is active, any functions between the jump and the label are not executed. All coils
between JUMPN and its associated LABELN are left at their previous states. This includes coils
associated with timers, counters, latches, and relays.
Any JUMPN can be either a forward or a backward jump, i.e., its LABELN can be either in a further or
previous rung. The LABELN must be in the same block.
Note: To avoid creating an endless loop with forward and backward JUMPN instructions, a
backward JUMPN should contain a way to make it conditional.
A JUMPN and its associated LABELN can be placed anywhere in a program, as long as the JUMPN /
LABELN range:
does not overlap the range of a MCRN / ENDMCRN pair.
■
does not overlap the range of a FOR_LOOP / END_FOR pair.
■
Nothing can be connected to the right side of a JUMPN instruction.
Operands
Parameter
Description
Label (????)
Label name; the name assigned to the destination LABEL(N).
GFK-2950C
Chapter 4. Ladder Diagram (LD) Programming
Always associated with...
a LABELN instruction
February 2018
Mnemonic
JUMPN
Optional
No
207
Advertisement
Table of Contents
