Communications Wiring - Phonetics Annunciator Module SCADA 3000 User Manual

SCADA 3000 User's Manual

COMMUNICATIONS WIRING

4-Conductor Twisted Pair
Module
Y
Z
B
A
straight-thru
The Main Unit should always be on one end of the chain, never in the middle.
1
2
3
4
ADDRESS
f
AM-8
Module
SCADA 3000
A Y
B Z
Z B
Y A
reversed
Figure 3: Correct daisy chain setup: Main unit on the end.
Module
SCADA 3000
Y
Z
B
A
reversed
Figure 4: Incorrect daisy chain setup: Main unit in the middle of the chain.
A B
BUS
d
A,B, Z
Module
Y
Z
B
A
straight-thru straight-thru
Module
Y
A
Z
B
B
Z
A
Y
reversed
unique
Address
1
2
3
4
5
6
7
8
9
Y
Ω
Module
Y
Z
B
A
Module
Y
Z
B
A
straight-thru
Jumper Code
A B B B
B A B B
A A B B
B B A B
A B A B
B A A B
A A A B
B B B A
A B B A