Series 2000 Communications Handbook

Series 2000 Communications HandbookMODBUS and JBUS Protocol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⊕ VJG HKTUV DKV D[VG QH VJG OGUUCIG YKVJ VJG YKVJ VJG JKIJ QTFGTD[VG QH VJG %4% TGIKUVGT4GVWTP VJG TGUWNV VQ VJG %4% TGIKUVGT5JKHV VJG %4% TGIKUVGT QPG DKV VQ VJG TKIJV +H VJG QXGT HNQY DKV QT HNCI KU GZENWUKXG 14 VJG %4% TGIKUVGT YKVJ # JGZCPF TGVWTP VJG TGUWNV VQ VJG %4% TGIKUVGTC+H VJG QXGTHNQY HNCI KU TGRGCV UVGR 4GRGCV UVGRU CPF WPVKN VJGTG JCXG DGGP UJKHVU 'ZENWUKXG 14 VJG PGZV DKV D[VG QH VJG OGUUCIG YKVJ VJG JKIJ QTFGT D[VG QH VJG%4% TGIKUVGT 4GRGCV UVGR VJTQWIJ VQ WPVKN CNN D[VGU QH VJG OGUUCIG JCXG DGGP GZENWUKXG 14YKVJ VJG %4% TGIKUVGT CPF UJKHVGF VKOGU 6JG EQPVGPVU QH VJG %4% TGIKUVGT CTG VJG D[VG %4% GTTQT EQFG CPF CTG CFFGF VQVJG OGUUCIG YKVJ VJG OQUV UKIPKHKECPV DKVU HKTUVSeries 2000 Communications Handbook Part No HA026230 Issue 2.0 Feb-00 3-7