DATA-LINC GROUP
11
DDAA1000/SRM User Guide
PN 161-09981-002C
rev 8/04
Point-to-Multipoint Analog OperationA 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
Output from Remote 0
Output from Remote 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