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3.8 I/O Processing and Response Lag
3.8.2 Direct mode
3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
3.8.2 Direct mode
(1) Definition of direct mode
The direct mode accesses an I/O module when each instruction is executed in a
sequence program.
The CPU module uses the direct access input (DX) and direct access output (DY) to
perform the direct mode I/O processing.
Figure 3.62 Direct mode
Input moduleCPU module
Device memory
0
DX10
ON/OFF
data
ON/OFF data
Input of ON/OFF data
at instruction execution
Output of ON/OFF data
at instruction execution
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