Rockwell Automation 1760-xxxx Pico Controller User Manual - Manual (Page 113)

Publication 1760-UM001D-EN-P - September 2005
Draw a Circuit Diagram with Pico 4-53
Jumps The 1760-L18xxx allows the use of jumps. Jumps can be used to
optimize the structure of a program or to implement the function of a
selector switch. For example, jumps can be used to select whether
manual/automatic operation or other machine programs are to be set.
Jumps consist of a jump location and a jump destination (label).
Circuit Diagram Symbols for Jumps
Function
If the jump coil is triggered, the circuit connections coming directly
after it are not processed. The states of the coils before the jump are
retained, unless they are overwritten in circuit connections that were
not missed by the jump. Jumps are always made going forward, i.e.
the jump ends on the first contact with the same number as that of the
coil.
• Coil = jump when 1
• Contact only at the first leftmost contact = Jump destination
The Jump contact point is always set to 1 . Backward jumps are not
possible with Pico. If the jump label does not come after the jump
coil, the jump is made to the end of the circuit diagram. The last
circuit connection is also skipped.
If a jump destination is not preset, the jump is made to the end of the
circuit diagram.
Multiple use of the same jump coil and jump contact is possible as
long as this is implemented in pairs, for example:
• Coil {:1/jumped range/Contact:1
• Coil {:1/jumped range/Contact:1 etc.
Contact (Can Only Be Used as First Leftmost Contact) Make Contact :
Numbers 1 to 8
Coils {
Numbers 1 to 8
Coil function {
TIP
The states of jumped circuit connections are
retained. The time value of timing relays that have
been started will continue to run.