Statement List (STL) - DCE FEL ČVUT v Praze

6.8 JBI Jump if BR = 1
Format
Description
Status word
JBI
Address Description
Symbolic name of jump destination.
Logic Control Instructions
If status bit BR is 1, JBI interrupts the linear program scan and jumps
to a jump destination. The linear program scan resumes at the jump destination. The
jump destination is specified by a jump label. A jump label may be as many as four
characters, and the first character must be a letter. Jump labels are followed with a
mandatory colon ":" and must precede the program statement in a line. Both forward
and backward jumps are possible. Jumps may be executed only within a block, that
is, the jump instruction and the jump destination must lie within one and the same
block. The jump destination must be unique within this block. The maximum jump
distance is -32768 or +32767 words of program code. The actual maximum number
of statements you can jump over depends on the mix of the statements used in your
program (one-, two-, or three word statements).
BR CC 1 CC 0 OV OS OR STA RLO /FC
writes: - - - - - 0 1 - 0
Statement List (STL) for S7-300 and S7-400 Programming
A5E00706960-01 6-9