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App. - 51

 

 

 
Appendix 5    Memory and File to be Handled by CPU Module 

 

Data to be stored in memories 

The following table lists the data and drive numbers which can be stored in 

the program memory, standard RAM, standard ROM, and memory card. 

 

CPU module built-in memory 

Memory 

card (RAM)

Memory card (ROM) 

Program 

memory 

Standard 

RAM 

Standard 

ROM 

SRAM card

Flash card

ATA card

Item 

Drive 0

*1

 

Drive 3

*1

 

Drive 4

*1

 

Drive 1

*1

 

Drive 2

*1

 

File name and 

extension 

Remarks 

Parameter 

 

 

 

 

 

 

PARAM.QPA 1 

data/drive 

Intelligent function 
module 
parameter

*2

 

 

 

 

 

 

 

IPARAM.QPA 1 

data/drive 

Program 

 

 

*3

 

*4

 

*4

 

*4

 

***.QPG 

- 

Device comment 

*5

 

 

*6

 

*6

 

*6

 

*6

 

***.QCD 

- 

Device initial value 

 

 

 

 

 

 

***.QDI 

- 

Device data 

 

 

 

 

 

 

***.QST 

- 

File register 

 

*7*8

 

 

 

*9

 

 

***.QDR 

- 

Local device 

 

*7

 

 

 

 

 

***.QDL 

1 data/CPU 
module 

Sampling trace file 

 

*7

 

 

 

 

 

***.QTD 

- 

Error history data 

 

 

 

 

 

 

***.QFD 

- 

Device data 
storage file 

 

 

 

 

 

 

DEVSTORE. 
QST 

- 

Module error 
collection file 

 

 

 

 

 

 

IERRLOG. 
QIE 

- 

Backup data file 

 

 

 

 

 

 

MEMBKUP0. 
QBP 

- 

Programmable 
controller user 
data 

 

 

 

 

 

*10

 ***.*** 

- 

User setting 
system area

*11

 

 

 

 

 

 

 - 

- 

: Required,  : Storable,  : Not storable 

 

*1:  A drive number is used to specify a memory to be written/read by the external device using a sequence program or MC protocol. 

Since the memory name is used to specify the target memory in GX Works2, the drive number needs not to be considered. 

*2:  Store the intelligent function module parameters in the same drive with the parameters. 

When they are stored in different drives, the intelligent function module parameters do not become valid. 

*3:  A program stored in the standard ROM cannot be executed. 

Store the program to the program memory before execution. 

*4:  To execute a program stored in the memory card, make the setting in the Boot File tab of the Q Parameter Setting window. 

*5:  The device comments cannot be read by instructions in a sequence program. 

*6:  Reading from a sequence program requires several scans. 

*7:  Only each one of file register, one local device, and sampling trace file can be stored in the standard RAM. 

*8:  For the number of storable file registers, refer to QnUCPU User's Manual Function Explanation, Program Fundamentals. 

*9:  A sequence program allows reading only. No data can be written from the sequence program. 

*10: Data can be written or read with the following instructions. 

• SP.FREAD (batch-reads data from the specified file in the memory card.) 

• SP.FWRITE (batch-writes data to the specified file in the memory card.) 

*11: Set an area used by the system.