Campbell Scientific CSAT3B CSAT3B Three-Dimensional Sonic Anemometer - Page 48

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CSAT3B Three-Dimensional Sonic Anemometer NOTE CPI Daisy-chain Topology For an application that requires CPI communication from multiple CSAT3Bs in series, or with a daisy-chain topology, first connect to each CSAT3B as described in Section 7.1, Settings, to give each sensor a unique CPI address. Then connect a CSAT3BCBL2 to the Power/SDM port and a CSAT3BCBL3 to the CPI/RS-485 port on the terminal CSAT3B. The opposite end of the power cable should use an M16 connector to mate with one of the split M16 connectors on the power/SDM splitter (pn 30293). The opposite end of the CPI cable should use an M16 connector to mate with one of the split M16 connectors on the CPI/RS-485 splitter (pn 30294). Screw the side of the splitters with only one M16 connector to the Power/SDM and CPI/RS-485 ports of the second CSAT3B. Connect another set of cables from these splitters down to the next CSAT3B. Continue the daisy-chain until the last CSAT3B, where a final CSAT3BCBL2 should have pigtail wire ends to connect to the 12 V and G ports of a datalogger or to a 12 to 32 Vdc power supply. The final CSAT3BCBL3 should have an RJ-45 connector that plugs into the CPI port of the datalogger. Refer to FIGURE 7-14 for the described connections. CPI Star Topology If several CSAT3Bs using CPI communications are being connected in parallel or with a star topology, connect a CSAT3BCBL2 cable to each Power/SDM port of each CSAT3B, and connect the other wire leads to the 12 V and G ports of a datalogger or to another 12 to 32 Vdc power supply (for convenience, it's possible to use a wiring bus such as the HUB-SDM8 to bring several power wires together and then extend a single cable such as the CABLEPCBL-L from the bus to the power supply). Connect a CSAT3BCBL3 to each CPI/RS-485 port of each CSAT3B, and connect the opposite end, which should have RJ-45 connectors to a HUB-CPI. Then, use a CAT5e or CAT6 Ethernet cable to connect the HUB-CPI to the CPI port of a datalogger. Refer to FIGURE 7-15 for these connections. The sockets or ports on the HUB-CPI are all the same. It does not matter which socket is used to connect to the datalogger or to other CSAT3Bs. 38

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CSAT3B Three-Dimensional Sonic Anemometer
CPI Daisy-chain Topology
For an application that requires CPI communication from multiple CSAT3Bs
in series, or with a daisy-chain topology, first connect to each CSAT3B as
described in Section 7.1,
Settings
,
to give each sensor a unique CPI address.
Then connect a CSAT3BCBL2 to the
Power/SDM
port and a CSAT3BCBL3
to the
CPI/RS-485
port on the terminal CSAT3B.
The opposite end of the
power cable should use an M16 connector to mate with one of the split M16
connectors on the power/SDM splitter (pn 30293).
The opposite end of the
CPI cable should use an M16 connector to mate with one of the split M16
connectors on the CPI/RS-485 splitter (pn 30294).
Screw the side of the splitters with only one M16 connector to the
Power/SDM
and
CPI/RS-485
ports of the second CSAT3B.
Connect another
set of cables from these splitters down to the next CSAT3B.
Continue the
daisy-chain until the last CSAT3B, where a final CSAT3BCBL2 should have
pigtail wire ends to connect to the
12 V
and
G
ports of a datalogger or to a 12
to 32 Vdc power supply.
The final CSAT3BCBL3 should have an RJ-45
connector that plugs into the CPI port of the datalogger.
Refer to FIGURE
7-14 for the described connections.
CPI Star Topology
If several CSAT3Bs using CPI communications are being connected in parallel
or with a star topology, connect a CSAT3BCBL2 cable to each
Power/SDM
port of each CSAT3B, and connect the other wire leads to the
12 V
and
G
ports of a datalogger or to another 12 to 32 Vdc power supply (for
convenience, it’s possible to use a wiring bus such as the HUB-SDM8 to bring
several power wires together and then extend a single cable such as the
CABLEPCBL-L from the bus to the power supply).
Connect a CSAT3BCBL3 to each
CPI/RS-485
port of each CSAT3B, and
connect the opposite end, which should have RJ-45 connectors to a HUB-CPI.
Then, use a CAT5e or CAT6 Ethernet cable to connect the HUB-CPI to the
CPI port of a datalogger.
Refer to FIGURE 7-15 for these connections.
The sockets or ports on the HUB-CPI are all the same. It does not
matter which socket is used to connect to the datalogger or to other
CSAT3Bs.
NOTE
38