Omron CV500 Installation Manual page 129

Specifications
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 DATA 0 and STB 9 turn ON bit 00
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.
Terminal Number 15
Word n
Word n + 1
Word n + 2
Word n + 3 Z
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
X
Y
Z
14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Y X
A
0 DATA 0
B
1 DATA 1
C
2 DATA 2
D
3 DATA 3
E
4 DATA 4
5 DATA 5
6 DATA 6
7 DATA 7
8 COM (24 V)
9 STB 0
10 STB 1
11 STB 2
12 STB 3
13 STB 4
14 STB 5
15 STB 6
16 STB 7
+
17 COM (0 V)
24 VDC
18 24 VDC
19 NC
E D C B A
Appendix B