Omron CP - PROGRAMMING MANUAL 05-2007 - Page 814

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Basic I/O Unit Instructions Section 3-22
There is no restriction on the number of times that TKY(211) can appear in
the program.
External Connections Connect the ten-key keypad so that the switches for keys 0 through 9 are
input to contacts 0 through 9 of the Input Unit, as shown in the following dia-
gram.
Timing Chart
Flags
COM
00 01 02 03 04 05 06 07 08 09 10 11
IN
CPM1A-20EDT
OUT
COM
00
COM
01
COM
02 03
COM
04 05 06 07
0
9
Tenkey pad
0 0 0 0 0 0 0 0
0
0 0 0 0 0 0 1
0
0 0 0 0 0 1 0
0
0 0 0 0 1 0 2
0
0 0 0 1 0 2 9
D
1
+1 D
1
(1)
(2)
(3)
(4)
(1) (2) (3) (4)
00
01
02
09
00
01
02
09
10
to
I
to
D
2
Input from 10-key
ON if a key is pressed.
"1" key input
"0" key input
"2" key input
"9" key input
Turn ON flags corre-
sponding to 10-key
inputs (The flags re-
main ON until the
next input.)
Before
execution
Name Label Operation
Error Flag ER OFF