ID-FLX Lite & Telecom Global Guide
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5.3.1 Default analog output curves
5.4 Remote modules - CAN bus connection
5.4.1 Connection rules
CAN bus line must be connected in series, from one unit to the next (no star, no cable stubs, no branches) both
ends must be by the 120 Ω (internal or external) resistor terminated. Maximal CAN bus length is up to 200m.