Filter
Top Products
305
Hardware With this instruction, 8-digit BCD set values are read from a digital switch.
DSW(––) utilizes 5 output bits and 8 input bits. Connect the digital switch and the
Input and Output Units as shown in the diagram below. Output point 5 will be
turned ON when one round of data is read, but there is no need to connect output
point 5 unless required for the application.
1
3
5
7
9
11
13
15
COM
0
2
4
6
8
10
12
14
COM
ID212
1
3
5
7
9
11
13
15
COM
0
2
4
6
8
10
12
14
COM
OD212
D
0
D
1
D
2
D
3
D
0
D
1
D
2
D
3
CS
0
CS
1
CS
2
CS
3
RD
D
0
D
1
D
2
D
3
D
0
D
1
D
2
D
3
CS
0
CS
1
CS
2
CS
3
RD
Interface
A7E data line
leftmost digits
To A7E chip selection
To A7E RD terminal
Leftmost digits
A7E
Rightmost digits
A7E data line rightmost digits
Input Unit
Output Unit
Note An interface to convert signals from 5 V to 24 V is
required to connect an A7E digital switch.
Advanced I/O Instructions Section 5-28