Programming instructions

Designer’s Guide 57
Calsense
Bridging Chains using -M-M Controllers
This scenario involves using controllers with two hardwire (model -M) communication options to share a
single central communication link with multiple hardwire FLOWSENSE chains or non-FLOWSENSE
controllers (Figure 33
). This is ideally suited for small sites or sites where Paige P7171D communication
cable already exists between the controllers.
Figure 33 - Bridging chains using -M-M 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, -LR, or -M if using an LR-2 PC line amplifier. It cannot
be -SR.
Note: If using -M with an LA-2 PC line amplifier, the LA-2 PC connected to the central computer
connects to the -M-M-FL controller, not the -M-FL controller
Paige P7171D
communication cable
used for FLOWSENSE
Paige P7171D
communication cable
used for central traffic
Paige P7171D
communication cable
used for FLOWSENSE
-M-M-FL
controller
(FLOWSENSE
master)
-??-M-FL
controller
-M-M-FL
controller
(FLOWSENSE
master)
-M-FL
controller
To other FLOWSENSE chains or
non-FLOWSENSE controllers
Central
communication link
To LA-2 PC line amplifier
(optional)
Computer with
Calsense Command Center
Computer with
Calsense Command Center
OR