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7. INITIAL SETTING OF TRANSMISSION CONTROL
DATA TO BUFFER MEMORY
MELSEC-A
7.7
Transmission Control Setting
The details are as described in the corresponding section in the AJ71C24-
S8 User's Manual.
7.8
Reading RS-232C Signal Data
This section describes the reading of the RS-232C communications signal
data stored in the buffer memory.
(1) Signal data indicating area
The RS-232C signal data is stored in buffer memory address 11 DH, as
illustrated below.
--
[;iEF]
(2) Example of a program for reading the signal data indicating area
The following is an example of a program for reading the signal data
stored in buffer memory address 11 DH.
Example of a program for reading the signal data LED indicating area
(AJ71 UC24 I10 addresses 80 to
9F)
H H
The data stored in the signal
FROMP
H8
H l l D
D O
K1
data indicating area is read
to DO.
For the data of each bit in the signal data indicating area, see Section 3.2.2.
b15
to
b5 b4
b 3
b2
bl
W
...
RS signal:ON, CS signal:ON
(send data status)
11DH
0
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