Programming instructions

58 Designer’s Guide
Calsense
Bridging Chains using -M-SR Controllers
This scenario involves using a controller with the spread spectrum radio (model -SR) communication
option to bridge multiple hardwire FLOWSENSE chains or non-FLOWSENSE controllers (Figure 34
).
This scenario is common for sites where hardwire FLOWSENSE chains are spread across a large area
with no way to run Paige P7171D communication cable between them.
Note: Bridging spread spectrum radio FLOWSENSE chains using hardwire in this method is not
supported. See Bridging Chains using a -SR Hub
for a way to accomplish this using a spread spectrum
radio hub.
Figure 34 - Bridging chains using -M-SR controllers
The rules for this scenario are:
• The central communication option, indicated as -?? in the figure, can be nearly any option
including -GR, -EN, -WEN, -R, -FOM, or -LR. It cannot
be -M or -SR
Note: This scenario does not support using an LA-2 PC line amplifier for central communication.
This requires a separate hub/controller. See Bridging Chains using a -SR Hub
for more
information.
SR radios
used
for central
traffic
Paige P7171D
communication cable
used for FLOWSENSE
Paige P7171D
communication cable
used for FLOWSENSE
-M-SR-FL
controller
(FLOWSENSE
master)
-??-M-FL
controller
-M-SR-FL
controller
(FLOWSENSE
master)
-M-FL
controller
Central
communication link
Computer with
Calsense Command Center
To other
FLOWSENSE chains
or non-FLOWSENSE
controllers