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As a policy of continual improvement, STAUFF reserves the right to alter the specification without prior notice.
201.031
Date of Issue: 06 November 2018
Figure 6.4 Multi-Drop Network Example
Figure 6.4 shows how to connect two or more LPM devices to a multi-drop RS485 network. Any
termination resistors should be fitted to the network cable ends only. Spurs off the main RS485 bus
should be kept as short as possible, e.g. below 2m. Normally the pre-wired 3m cable available for the
LPM would be used, with a junction box to connect to the RS485 trunk. Either individual DC supplies can
be used to power each LPM, or a single supply run through the trunk cable.
Figure 6.5 Remote Display Unit Including PC Controller Example
Figure 6.5 shows how to connect the LPM-RDU Remote Display Unit. The RDU is used when the LPM
location is not convenient for an operator. It can control and monitor a remote LPM, as well as allowing
an external controller to be connected to it (for data download, for example).