Program Execution - Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual

Program Execution

6-7 Program Execution
360
When program execution is started, the CPU Unit scans the program from top to
bottom, checking all conditions and executing all instructions accordingly as it
moves down the bus bar. It is important that instructions be placed in the proper
order so that, for example, the desired data is moved to a word before that word
is used as the operand for an instruction. Remember that an instruction line is
completed to the terminal instruction at the right before executing an instruction
lines branching from the first instruction line to other terminal instructions at the
right.
Program execution is only one of the tasks carried out by the CPU Unit as part of
the cycle time. Refer to Section 8 PC Operations and Processing Time for de-
tails.
Section 6-7