External Connections - Omron SYSMAC CP Series Instruction & Reference Manual

External Connections

Connect the digital switch or thumbwheel switch to Input Unit contacts 0 to 7 and Output Unit contacts 0
to 4, as shown in the following diagram. The following example illustrates connections for an A7B Thum-
bwheel Switch.
IN
CP1W-20EDT
OUT
Timing Chart
I
Four digits: 00 to 03
Eight digits: 00 to 03, 04 to 07
O
00
01
02
03
04
05
CP1E CPU Unit Instructions Reference Manual(W483)
Switch Switch
No. 8 No. 7
0 1
10 10
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
16 cycles to complete one round of execution
Switch Switch Switch Switch
No. 6 No. 5 No. 4 No. 3
Input data
2 3
10 10
RD (read) signal
One Round Flag
2 Instructions
8 4 2 1
Switch Switch
No. 2 No. 1
A7B
Thumbwheel
Switch
Leftmost Rightmost
4 digits 4 digits
D+1 D
When only 4 digits are read,
only word D is used.
CS signals
2-359
2