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(2) Clearing the file register
If the Latch (2) is set in the Device tab of the PLC parameter dialog box, the data in the file register are not cleared
even if the CPU module is powered off or reset. (Data cannot be initialized by performing latch clear operation.
For how to clear the data, refer to the "Data Clear Processing" section. (
*1
The latch range of the file register can be set in the Device tab of the PLC parameter dialog box. (
Section 4.7.4 (1) (c))
4.7.1
Storage location
File register data are stored in the following memory.
Q00UCPU, Q01UCPU, QnUDVCPU, QnUDPVCPU
Q02UCPU, QnUD(H)CPU, QnUDE(H)CPU
4.7.2
File register size
The size of file register is the total number of points of the file register (ZR), extended data register (D), and extended
link register (W). Set the size so that the total number of points will be less than the free space of memory specified as
a storage location. The free space can be checked in the Confirm Memory Size window using a programming tool.
[Tool]
(1) Storing data in the standard RAM
The following table lists the points available for the file register data to be stored in the standard RAM.
Note that if data other than the file register data are stored in the standard RAM, the points will decrease.
Page 36, Section 2.1.1 (2))
(
Q00UCPU, Q01UCPU, Q02UCPU
Q03UD(E)CPU
Q03UDVCPU
With an extended SRAM cassette (1M)
With an extended SRAM cassette (2M)
With an extended SRAM cassette (4M)
With an extended SRAM cassette (8M)
Q04UD(E)HCPU
Q04UDVCPU, Q04UDPVCPU
With an extended SRAM cassette (1M)
With an extended SRAM cassette (2M)
With an extended SRAM cassette (4M)
With an extended SRAM cassette (8M)
Q06UD(E)HCPU
CPU module
[Confirm Memory Size]
CPU module
Page 75, Section 2.7 (4))
Memory
Standard RAM
Standard RAM, SRAM card, Flash card
Point
64K
96K
96K
608K
1120K
2144K
4192K
128K
128K
640K
1152K
2176K
4224K
384K
CHAPTER 4 DEVICES
*1
)
Page 395,
4
391
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