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MELSEC-
7 USING FRAMES WHEN EXCHANGING DATA
(3) Registering, reading and deleting user registration frames
Before registering, reading or deleting a user registration frame, the EEPROM
function must be designated, the registration frame must be designated, and the
EEPROM function request signal (RYn7) must be turned ON in the R2 buffer
memory as shown below.
The items to be set for the R2 buffer memory for registering, reading or deleting a
user registration frame are shown below.
•
Input/output signals for registering or deleting a user registration frame
EEPROM function request signal (RYn7)
EEPROM function execution
(Registration/deletion
of registration frame)
EEPROM function normal/error
complete signal (RXn7/RXn8)
R2 1C0
H
to 1EF
H)
R2 1C0
H
to 1C1
H)
(For registration :
:
(For deletion :
R2 buffer memory
•
Input/output signals for reading a user registration frame
EEPROM function request si
nal
RYn7
EEPROM function execution
(Reading of registration frame)
EEPROM function normal/error
complete signal (RXn7/RXn8)
R2 1C0H to 1C1H
)
(
R2 buffer memory
R2 1C7
H
to 1EF
H
)
(
R2 buffer memory
Process
R2 buffer
memory
address
Setting item Details
Register Read Delete
R2
1C0H
EEPROM
function
designation
Designate the EEPROM function.
When using the registration frame function, designate
whether to register, read or delete a registration frame.
0 : Buffer memory setting value registration
1 : User registration frame registration
2 : User registration frame read
3 : User registration frame deletion
4 : Buffer memory setting value initialization
R2
1C1H
User-registered
frame No.
designation
Designate the user registration frame registration No. when
registering, reading or deleting a frame to the EEPROM.
When registering the user registration frame, if a No. of a
user registration frame already registered, the details
registered in the EEPROM can be changed.
Setting value : 3E8
H to 4AFH (1000 to 1199)
R2
1C7H
User-registered
frame byte
designation
Designate the total No. of bytes of the registration frame to
be registered/read to the EEPROM.
Setting value : 1 to 80
: Setting possible, : Setting not possible, : Stored
