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11
DDAA1000/SRM User Guide
PN 161-09981-002C
rev 8/04
Point-to-Multipoint Analog Operation
A system is to be built where one analog input exist at one remote and one at another. The maximum possibility of master
outputs is eight, so this is a valid configuration. Remote 0 being the first remote in the Master’s poll list will be assigned
Master output one. Remote 1 being next in the poll list will be Master output two.
Figure 8: Point-to-Multipoint Analog Example
Pwr
4-20mA Input
4-20mA Output
G 1 2 3 4 5 6 7 8G 1 2 3 4 5 6 7 8
Pwr
4-20mA Input
4-20mA Output
G 1 2 3 4 5 6 7 8G 1 2 3 4 5 6 7 8
mA
13.7
mA
Sensor
with 4 -20 mA
Output
Pwr
4-20mA Input
4-20mA Output
G 1 2 3 4 5 6 7 8G 1 2 3 4 5 6 7 8
Sensor
with 4 -20 mA
Output
O
utput from
R
em
ote 0
O
utput from
R
em
ote 1
Master
Remote 0
Remote 1
Note: A loop power supply may be
needed. The DDAA1000 unites do not
supply loop power.
Note: A loop power supply may be
needed. The DDAA1000 unites do not
supply loop power.
*** Systems with only one
analog input on each remote