External Failure Memory F Refer To Item; Data Register D Refer To Item; Input/Output Unit Refer To Item - Mitsubishi Electric melsec-k Programming Manual

Example: Execute counter input by 1 min time up, and use the number of required minutes as
the setting value.
3. Timer resetting is not possible. However, the present value is cleared to 0 at the time of power
I _ _
ON.
Counter setting values from 1 to 9999 can be used. Intermediate resetting is possible by RST in-
structions. Output or arithmetic operations are possible for the present value of timer and counter
by MOVand other data instructions.
2-6. External failure memory F
- +
Refer to item 3-4.
F has the same function as the temporary memory, and when the optional external failure
monitor unit (KN61) is connected to the (attachment position for the I/O unit, F is scanned
cyclically and the F number corresponding to the scan sequence position which has become "1
"
is
displayed numerically. When an external alarm is put out together with the display, the respective
F is handled in the same way as a general M, and alarm output can be executed via output Y. The
display of the F number of the external failure is cleared by the reset switch of the monitor surface
after Fi "0", and the next Fj "1" is displayed.
When no external failure monitor is used, handling is executed exactly in the same way as for
a
general M, so that use as a temporary memory is possible.
i '
2-7. Data register D
- +
Refer to item 3-3.
2-8. Input/output unit
- +
Refer to item 3-9.
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