Buffer Memory List; Buffer Memory Details - Mitsubishi MELSEC-Q EQ-V680D1 User Manual

3. SPECIFICATIONS
3.4 Buffer Memory

3.4.1 Buffer memory list

Address
Intelligent Function Module Device
CH.1
Un\G0
Un\G1
Un\G2
Un\G3
Un\G4
Un\G5
Un\G6 to Un\G9 Un\G4006 to Un\G4009 Use prohibited
Un\G10
Un\G11
Un\G12 to Un\G39 Un\G4012 to Un\G4039 Use prohibited
Un\G40
Un\G41
Un\G42
Un\G43 to Un\G89 Un\G4043 to Un\G4089 Use prohibited
Un\G90 to Un\G93 Un\G4090 to Un\G4093 ID tag UID storage area (8 bytes)*
Un\G94 to Un\G99 Un\G4094 to Un\G4099 Use prohibited
Un\G100 to Un\G1123 Un\G4100 to Un\G5123 Data storage area (2,048 bytes)
Un\G8000
Un\G8001
Un\G8002

3.4.2 Buffer memory details

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Buffer memory refers to an area that stores read/write data and control information for
exchanging data between ID tags and the programmable controller CPU.
The buffer memory can be accessed by the MOV command from the sequence program.
Note that the contents of buffer memory return to default values at power OFF and
programmable controller CPU reset.
The following table lists the buffer memory of the RFID interface module.
Table 3.5 Buffer memory list
CH.2
Un\G4000 Command code specification area
Un\G4001 Communication specification area
Un\G4002 Processing specification area
Un\G4003 Head address specification area
Un\G4004 No. of processing points specification area
Un\G4005 Command option specification area
Un\G4010 Auto command wait time setting area
Un\G4011 Processing result monitor switch setting area
Un\G4040 Module status storage area
Un\G4041 Error details storage area
Un\G4042 Processing result monitor storage area
Test operation mode specification area
Test operation antenna specification area
No. of processing points during testing
specification area
*1. Read and write are enabled/disabled from the sequence program. R: Read enabled,
W: Write enabled.
*2. Does not change according to the setting contents of the data storage order of the
processing specification area (Un\G2, Un\G4002).
Point
Use-prohibited buffer memory is used by the system and cannot be used by users.
If you execute read or write with this buffer memory in the sequence program,
normal operation cannot be guaranteed.
(1) Command code specification area (Un\G0, Un\G4000)
This area is used to specify the processing contents for ID tags using command codes.
For command code details, refer to Section 6.2, "Command Specification List."
Buffer Memory Address Name
2
Initial
1
R/W* Reference
Value
0 R/W Section 3.4.2 (1)
0 R/W Section 3.4.2(2)
0 R/W Section 3.4.2(3)
0 R/W Section 3.4.2(4)
0 R/W Section 3.4.2(5)
0 R/W Section 3.4.2(6)
─ ─ ──
0 R/W Section 3.4.2(7)
0 R/W Section 3.4.2(8)
─ ─ ──
0 R Section 3.4.2(9)
0 R Section 3.4.2(10)
0 R Section 3.4.2(11)
─ ─ ──
0 R Section 3.4.2(12)
─ ─ ──
0 R/W Section 3.4.2(13)
0 R/W Section 3.4.2(14)
0 R/W Section 3.4.2(15)
0 R/W Section 3.4.2(16)
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