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7 USING FRAMES WHEN EXCHANGING DATA
R2 buffer
memory
Setting item
address
1C8
User-registered
R 2
H
to 1EF
frame
H
Registration execution
When registering a frame, designate the data to be
registered in order of (L) and (H) from the head area of the
user registration frame area.
When reading a frame, the registered data will be stored
with the same details and arrangement as registration.
(Example) Details designated in user registration frame
area for registering the user registration frame
into the EEPROM to transmit the ETX, sum
check code, CR and LF (registration code: 03
FF
, F1
H
∼
b15
2nd byte
R2 1C8
H
4th byte
R2 1C9
H
6th byte
R2 1CA
H
R2 1CB
(H)
H
* In the above diagram, 5 is designated for the registration
frame byte size designation (
(4) Example of program for registering user registration frame
An example of a program for registering the user registration frame is shown
below.
The following gives a program example for registering the user registration frame.
This example assumes that the buffer memory automatic update function is
used.
Refer to Section 5.1 for program conditions.
(a) When using the FROM/TO command with the ACPU/QCPU-A
(A mode)
Details
, 0D
, 0A
).
H
H
H
∼
b8 b7
b0
(FF
)
1st byte
(03
)
..... Sum check code ETX
H
H
(0D
)
3rd byte
(F1
)
..... CR
H
H
(0
)
..... LF
5th byte
(0A
)
H
H
(L)
Designate registration data
1C7
).
R 2
H
: Setting possible,
7 - 35
MELSEC-A
Process
Register
Read
,
H
: Setting not possible,
EEPROM function
designation: 1
No. of user registration
frame to be registered: 3E8
Change to bank 2
Write setting value to R2
Change to bank 0
Byte size of data to be
registered: 5
Registration data 1
("03
", "FF
H
Registration data 2
("F3
", "0D
H
Registration data 3
("0A
")
H
Delete
: Stored
H
")
H
")
H
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