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10.4.3
Creating a program for CPU No. 1
Create a program for checking the operation of the multiple CPU.
Generally, in the multiple CPU system using the auto refresh setting (between
CPUs), the old data and the new data may be mixed when multiple data is
communicated between CPUs.
The interlock shown in 10.3.1(4) is required to solve the problem.
In this exercise, the simple program as below is used since the communication data
is 1 word which requires no interlock.
Sequence program for QCPU No. 1
The sequence program executes a sampling processing on analog voltages
input through CH1 of Q64AD, and then converts the analog values to digital
values.
The converted digital value is stored in the device for auto refresh (D10).
0
X80
X8E
>=
D10
K0
Project name
Applied 8
Program name
MULTI1
MOV
U8\G11 D10
BCD
D10
K4Y40
END
11
X80 (X0): Module READY
X8E (XE): A/D conversion completed flag
U8\G11 (Un\G11): Digital output value from CH1
10 - 18
Transfers the digital
conversion value to
the device for auto refresh.
Displays the digital
conversion value in
7 segments.