Specifications
Appendix B
Connection Example 1 (Keyboard)
The wiring diagram and table below show how the ID212 DC Input Unit can be wired using a specially wired key
-
board. For example, if A on the keyboard is pressed, the combination of inputs on DA A 0 and STB 9 turn ON bit 00
T
of word n. Similarly, the combination of inputs on DATA 7 and STB 7 turn ON bit 15 of word n+3. The value of word n
depends on where the Unit is mounted.
A
0
1
2
3
4
5
6
7
DATA 0
DATA 1
DATA 2
DATA 3
DATA 4
DATA 5
DATA 6
DATA 7
B
C
D
E
X
Y
Z
8
COM (24 V)
STB 0
9
10
11
12
13
14
15
16
17
18
19
STB 1
STB 2
STB 3
STB 4
STB 5
STB 6
STB 7
+
COM (0 V)
24 VDC
NC
24 VDC
Terminal Number 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Word n
E
D
C
B
A
Word n + 1
Word n + 2
Word n + 3
Z
Y
X
Note Because the DC Input Unit is operated on an extremely small current, make sure there is adequate distance
between the DC Input Unit wires and high-tension equipment or power lines. If this cannot be avoided, use
shielded cables when wiring the DC Input Unit. Be sure to keep the total length of the wires less than 10 m.
116
OMRON [ OMRON ELECTRONICS LLC ]
