Forced I/O Setting - LSIS MASTER-K200S Instructions & Programming

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.
Forced I/O request bit
The forced I/O address
The forced I/O data
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
1 0
b) Write the forced I/O address (All bit = hFFFF) to the corresponding address word. Write
hFFFF to the D4710.
<D4710 word>
F E
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
P P
F E
1 0
K80S
D C B A 9 8
0 0 0 1 1 1
( 0 = disable forced I/O, 1 = enable forced I/O )
D C B A 9 8
1 1 1 1 1 1
D C B A 9 8
P P P P P P
D C B A 9 8
0 0 0 1 1 1
2-27
Chapter 2. Functions
K200S K300S
M1910
D4700 ~
D4800 ~
7 6 5 4 3 2
0 0 1 0 0 0
7 6 5 4 3 2
1 1 1 1 1 1
7 6 5 4 3 2
P P P P P P
7 6 5 4 3 2
0 0 1 0 0 0
K1000S
D9700 ~
D9800 ~
1 0
0 1
1 0
1 1
1 0
P P
1 0
0 1