46
(8) RESET key switch
RESET
: Hardware reset. Used to reset the CPU after an operation
error and to initialize operation.
LATCH
: Sets all data in the latch area defined in the parameter
CLEAR
settings to "OFF" or "0" (valid only when the RUN/STOP key
switch is turned to STOP).
(1) Turn the RUN/STOP switch from STOP to L.CLR several
times.
(2) Clear by means of a program.
(9) I/O control switch (AnNCPU only)
This switch is used to set the Direct/Refresh mode.
Switch Setting
Input (X)
Output (Y)
D9014
OFF
ON
(Factory setting)
Direct mode
Direct mode
0
OFF
ON
Refresh mode
Direct mode
1
OFF
ON
Refresh mode
Refresh mode
3
POINTS
(1)
Perform switch setting while the power is switched OFF.
(2)
After the switches have been set, the CPU checks the status
of the switches at power on or at reset. Note that if the
direct mode is set for input and the refresh mode for output,
the CPU will execute processing in the refresh mode for both
input and output.
(3)
Since a binary code corresponding to the I/O control mode is
stored in special register D9014, the mode can be monitored
using a peripheral device.
Latch Clearing Method
Содержание Melsec A Series
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