Knowledgebase: PL Series > PL-3
PL Series. End of chain termination
Posted by on 28 August 2013 02:58 PM

As with any RS-485 system, the last PL device needs to have a terminating resistor fitted to its output port. 

Some early versions of  PL modules (eg. PL-3) are shipped with a 100 ohm resistor already fitted.
Leave this fitted only if the unit is the last in the chain.

Later version modules are supplied with a terminating RJ45 plug
(Allen & Heath part number 003-082 - spares available through normal distribution channels).

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