Mitsubishi Electric A800 Programming Manual page 110

4): Indicates the process description of each instruction.
(D) + (S) (D)
Indicates 16 bits
5): Details of the execution conditions for each instruction are as follows.
Symbol
An always executed instruction. It is always executed irrespective of whether the
Blank instruction prior condition is ON/OFF.
When the prior condition is OFF, the instruction executes the OFF process.
The instruction is executed only while the prior condition of the instruction is ON.
When the prior condition is OFF, the instruction is not executed and is not processed.
The instruction is executed one time only at the leading edge of the prior condition (OFF to
ON), and is not executed or processed even when any subsequent conditions are ON.
The instruction is executed only while the prior condition of the instruction is OFF. When
the prior condition is ON, the instruction is not executed and is not processed.
The instruction is executed one time only at the trailing edge of the prior condition (ON to
OFF), and is not executed or processed even when any subsequent conditions are OFF.
6): Indicates the number of program steps required for each instruction.
(D + 1, D) + (S + 1, S)
16 bits 16 bits
Indicates 32 bits
+ 1
D
Upper 16 bits Lower 16 bits
Execution condition
Sequence instructions list
(D + 1, D)
D
Sequence program
3
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