Instruction Manual

Module Preparation, Wiring and
Installation
Chapter 2
2-7
Figure 2.5
T ypical Point-to-point W iring for Up to Six 3-digit Thumbwheel Switches (Maintained Switch
Contact Mode)
SW3
G, H, I
Enable
SW6
8421 8421
D
E
F
G
H
I
ABC
A
BC
3–Digit
SW4
MSD MD
LSD
MSD MD LSD
SW1
Digit Junction
8421
Field Wiring Arm
Module Inputs 7 6 5 4 3 2 1 0 I H G F E D C B A
Enable Lines
10366
1
D, E, F
SW2SW5
Thumbwheel Switch
C
A
B
Lines
Terminal Strip
(User Supplied)
1771–WF
2 3 4 5 6 7 8
9
10
11 12 13
14
15
16
17
18
(User Supplied)
8421
MSD MD LSD MSD
MD LSD
MSD MD LSD MSD
MD LSD
8421 8421 8421 8421 8421 8421