16 Other Functions
16-10
CP2E CPU Unit Software User’s Manual(W614)
z
Number of Words to Back Up
The number of words to back up starting from D0 is set in the
Number of CH of DM for backup Box
in the Startup Data Read
Area
in the
PLC Setup
.
z
Restoring DM Backup Data to the I/O Memory When Power is Turned ON
The DM backup data can be restored to the I/O memory when power is turned ON by selecting the
Re
s
tore D0- from backup memory
Check Box in the
Startup Data Read
Area in the PLC Setup.
The DM backup data will be read from the backup memory even if the
Clear retained memory area
(HR/DM/CNT)
Check Box is selected in the PLC Setup.
z
Related Auxiliary Area Bits
Name
Address
Description
DM Backup Save
Start Bit
A751.15
The number of words in the DM Area specified in the
Number of CH of
DM for backup
Box in the
Startup Data Read
Area in the PLC Setup
are saved from the I/O memory to the built-in Flash Memory when this
bit is turned ON.
This bit will not automatically turn OFF again if the bit turns ON. Design
the ladder program so that this bit is turned ON and OFF again using
upwardly differentiated bits.
If this bit is turned ON and OFF while the DM Backup Save Flag
(A751.14) is ON, it will be ignored and the data will not be backed up
again. To backup the data again, make sure that A751.14 is OFF and
then turn ON A751.15. A751.15 is turned OFF when the power supply
is turned ON.
DM Backup Save
Flag
A751.14
This flag turns ON when A751.15 is turned ON to start the saving
operation. This flag stays ON while data is being saved and turns OFF
when finished.
Use this flag to confirm when the DM backup operation has been com-
pleted.
The flag is turned OFF when the power supply is turned ON.
DM Backup
Restore Failed
Flag
A751.11
This flag turns ON if the DM backup data could not be restored cor-
rectly. If this flag turns ON, data will not be read from the built-in Flash
Memory to the I/O memory.
For example, if power was interrupted while data was being backed up,
the DM Area data would not be backed up properly and the next time
power is turned ON, the DM backup data will not be restored. If this
happens, this flag will be turned ON.
If the number of the backed up DM area words is different from the
Number of CH of DM for backup
in the PLC Setup, this flag will be
turned ON.
This flag turns OFF in the following cases:
•
Data is successfully restored from the built-in Flash Memory to the
I/O memory when the power supply is turned ON.
•
All memory is cleared.
Содержание SYSMAC CP Series
Страница 1: ...USER S MANUAL Cat No W614 E1 01 SYSMAC CP Series CP2E E D CP2E S D CP2E N D CP2E CPU Unit Software ...
Страница 3: ......
Страница 32: ...1 Overview 1 4 CP2E CPU Unit Software User s Manual W614 ...
Страница 44: ...3 CPU Unit Operation 3 8 CP2E CPU Unit Software User s Manual W614 ...
Страница 116: ...6 I O Allocation 6 8 CP2E CPU Unit Software User s Manual W614 ...
Страница 144: ...7 PLC Setup 7 28 CP2E CPU Unit Software User s Manual W614 ...
Страница 170: ...10 Interrupts 10 14 CP2E CPU Unit Software User s Manual W614 ...
Страница 200: ...11 High speed Counters 11 30 CP2E CPU Unit Software User s Manual W614 ...
Страница 272: ...12 Pulse Outputs 12 72 CP2E CPU Unit Software User s Manual W614 ...
Страница 278: ...13 PWM Outputs 13 6 CP2E CPU Unit Software User s Manual W614 ...
Страница 460: ...18 Programming Device Operations 18 28 CP2E CPU Unit Software User s Manual W614 ...
Страница 576: ...Revision 2 CP2E CPU Unit Software User s Manual W614 ...
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