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Chapter 2. Functions
2-27
2.6.3
Forced I/O setting
(Applicable for K80S / 200S / K300S / K1000S)
It is possible to output a designated data regardless of the result of operation. This function is
useful to check operation of the output modules and wiring between the output modules and
external devices.
K80S
K200S
K300S
K1000S
Forced I/O request bit
M1910
The forced I/O address
D4700 ~
D9700 ~
The forced I/O data
D4800 ~
D9800 ~
Example 1) Output h8721 to the P10 word by force (K80S / 200S / K300S)
a) Write the forced I/O data (h8721) to the corresponding data word. P10 is matched to the
D4810 word.
<D4810 word>
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
1
0
0
0
0
1
1
1
0
0
1
0
0
0
0
1
b) Write the forced I/O address (All bit = hFFFF) to the corresponding address word. Write
hFFFF to the D4710.
<D4710 word> ( 0 = disable forced I/O, 1 = enable forced I/O )
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
c) Switch on the forced I/O request bit (M1910).
d) Output of P10 word
(P : The previous result of operation)
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
F
E
D
C
B
A
9
8
7
6
5
4
3
2
1
0
1
0
0
0
0
1
1
1
0
0
1
0
0
0
0
1