Title: Hardware Installation Guide.pdf
RS-485 (2-wire or 4-wire) must be terminated at both ends of the RS-485 line (bus). Terminating the line provides a more reliable communication by minimizing the signal reflection and external noise coupling. Each component provided has an on-board terminator. It is up to the installer to determine which device is at the End of the communication line. (see diagram below)Belden (24 gauge wire – (7x32) Stranded Conductors – Polyethylene Insulated)Belden Wire SpecificationsTrade Number UL NEC Type CSA CertificationNumber of PairsNominal D.C. R. ConductorShieldNominal Impedance (Ohms)Nominal CapacitancepF/feetpF/meter9841124.0 ohms/M3.35 ohms/M12012.842NEC CM CSA78.7 ohms/ km11.0 ohms/K9842224.0 ohms/M2.2 ohms/M12012.842NEC CM CSA78.7 ohms/ km7.2 ohms/K64 — revision 6Hardware Installation GuideBelden Wire SpecificationsTrade Number UL NEC Type CSA CertificationNumber of PairsNominal D.C. R. ConductorShieldNominal Impedance (Ohms)