Direct Processing - Mitsubishi Electric L02SCPU User's Manual And Reference

2.6.2

Direct processing

(1) Outline of the processing
Data input and output are performed using a direct access input (DX) or direct access output (DY).
CPU
(operation processing area)
4)
DX0
5)
DY20
DY25
*1 Data in the programming tool input area can be turned on or off by the following:
 Test operation of a programming tool
 Writing data from a network module
 Writing data from an external device using the MC protocol
 Writing data using the simple PLC communication function
*2 Data in the output (Y) device memory can be turned on or off by the following operation.
 Test operation of a programming tool
 Writing data to a program
 Writing data from a network module
 Writing data from an external device using the MC protocol
 Writing data using the simple PLC communication function
Item
Execution of an input
contact instruction
Execution of an output
contact instruction
Execution of the OUT
instruction
54
CPU module
Input (X)
device
memory
3)
Output (Y)
device
6)
2
memory*
General-purpose
output
The OR processing is performed between the input information of the input module (1)) and the input data of the
programming tool (2)) or general-purpose input(3)). The result is stored in the input (X) device memory and is
used as input data (4)) to execute the program.
Output data in the output (Y) device memory are read out (5)) and the program is executed.
The operation result of the program (6)) are output to the general-purpose output and output module, and stored
in the output (Y) device memory.
2)
Programming
tool input
1
area*
General-purpose
input
Description
1)
Input module
Output module