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6 EXCHANGING DATA WITH AN EXTERNAL DEVICE
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).)
Transmission execution
Initialization
complete
R2 normal
(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).)
R2 error processing (Refer to section 5.3 (7).)
Writing of remote output (RY) (Refer to section 5.3 (8).)
6 - 11
MELSEC-A
Pulsate data transmission
switch
Set data transmission flag
Set transmission data size
Set transmission data
(A (41
), B (42
))
H
H
Set transmission data
(C (43
), D (44
))
H
H
Set transmission data
(E (45
), F (46
))
H
H
Change to bank 2
Store transmission data
in automatic update buffer
Change to bank 0
Set transmission request
(RYn0)
Reset transmission
request (RYn0)
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