
Using Program Flow Control Instructions
10–3
Using LBL
This input instruction is the tar
get of JMP instructions having the same label
number. You must program this instruction as the first instruction of a rung. This
instruction has no control bits.
Y
ou can program multiple jumps to the same label by assigning the same label
number to multiple JMP instructions. However
, label numbers must be unique.
Note Do not jump (JMP) into an MCR zone. Instructions that ar
e pr
ogrammed within the
MCR zone starting at the LBL instruction and ending at the ‘END MCR’ instruction
will always be evaluated as though the MCR zone is true, r
egar
dless of the true state
of the “Start MCR” instruction.
Programming
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