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MODBUS CONNECTIONS
The ideal Modbus network topology is that of a daisy chain as depicted
in Figure 23. Small spurs may be used, but in this case attention needs
to be paid to the data rate and the number of units on the bus. It is
recommended to run cable containing 4 wires and a shield to each
UF3300 from a network junction box. This accommodates one pair of
twisted wires into the connected unit, and one set out to connect to the
next unit.
It is the responsibility of the user to install cable and wire to the
MULTICOMP MP002510 Modbus plug connector. The connection
diagram is shown más adelante in Figure 22. Note that the connection
polarity is all important. It is the user's responsibility to ensure that the
A/+ve and B/-ve connections to all units are consistent.
A / +ve
B / -ve
1
2
3
Rear View of Multicomp Pro
MULTICOMP MP002510
Rear Solder Lug View
Figure 22 - UF3300 Modbus Plug Connections
Issue 1.1 March 2022
Page 1
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