Mitsubishi Electric MELSEC-Q Structured Programming Manual page 28

FXCPU Structured Programming Manual
[Device & Common]
3. FX PLC
3S
1) Types of program memory
Parameter
Sequence program
Comment
File register
2) Types of word device memory
Data register (D)
Index register (V and Z)
Timer current value
register (T)
Counter current value
register (C)
Clock data
*1. Some devices are cleared when the PLC mode switches from STOP to RUN.
*2. The clock data is held by the power accumulated in the large-capacity capacitor built in the PLC.
The clock data is not held correctly if the voltage of the built-in large-capacity capacitor becomes low.
The large-capacity capacitor can hold the clock data for 10 days (when the ambient temperature is
25°C) if it is charged fully (by turning ON the PLC for 30 minutes or more).
26
Item
Can be secured by
parameter setting.
Item
General type
Latched (backed-up) type
File type
Special type
V, Z
For 100 ms
For 10 ms
For 1 ms
Retentive type for 100 ms
Retentive type for 1 ms
General type
Latched (backed-up) type
High speed type
Current value
Power OFF Power OFF→ON
Does not change.
Does not change.
Does not change.
Does not change.
Power OFF Power OFF→ON
Cleared.
Does not change.
Does not change.
Set to initial
Cleared.
*1
value.
Cleared.
Cleared.
Cleared.
Cleared.
Does not change.
Does not change.
Cleared.
Does not change.
Does not change.
Does not change.
→ For special data registers, refer to Chapter 4.
1 Device Outline
1.2 Program Memory and Devices
STOP→RUN RUN→STOP
STOP→RUN RUN→STOP
Does not change. Cleared.
Does not change while M8033 is ON.
*1
Does not change.
Does not change.
Does not change. Cleared.
Does not change while M8033 is ON.
Does not change. Cleared.
Does not change while M8033 is ON.
Does not change. Cleared.
Does not change while M8033 is ON.
Does not change. Cleared.
Does not change while M8033 is ON.
*2