Filter
Top Products
6 - 11
MELSEC-
A
6 EXCHANGING DATA WITH AN EXTERNAL DEVICE
(3) Program
The program for transmitting the transmission data (ABCDEF) using the buffer
memory automatic update function is shown below.
Refer to section 5.1 for details on the program conditions.
(a) When using the FROM/TO command with the ACPU / QCPU-
A (A mode)
R2 initialization (Refer to section 5.5.1 (4).)
Transmission execution
R2 normal
Pulsate data transmission
switch
Set data transmission flag
Set transmission data size
Set transmission data
(A (41
H
), B (42
H
))
Set transmission data
(C (43
H
), D (44
H
))
Set transmission data
(E (45
H
), F (46
H
))
Change to bank 2
Store transmission data
in automatic update buffer
Set transmission request
(RYn0)
Change to bank 0
Reset transmission
request (RYn0)
Initialization
complete
Master station initialization (parameter setting, data link setting) (Refer to section 5.4.)
Reading of remote input (RX) (Refer to section 5.3 (2).)
Confirmation of R2 data link status (Refer to section 5.3 (3).)
R2 error processing (Refer to section 5.3 (7).)
Writing of remote output (RY) (Refer to section 5.3 (8).)