Omron CQM1H - PROGRAM Programming Manual page 457

Advanced I/O Instructions
Hardware
Using the Instruction
432
Prepare the hexadecimal keyboard, and connect the 0 to F numeric key
switches, as shown below, to input points 0 through 3 and output points 0
through 3. Output point 4 will be turned ON while any key is being pressed,
but there is no need to connect it.
ID212
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
COM
COM
Input Unit
The inputs can be connected to the input terminals on the CPU Unit or a DC
Input Unit with 8 or more input points and the outputs can be connected from
a Transistor Output Unit with 8 points or more.
HKY
C D E
F
8 9 A B
4 5 6
7
3
0 1 2
IW
IW: Input word
0W OW: Control signal output word
D: First register word
D
Section 5-31
OD212
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
COM
COM
Output Unit