mankhwala

2.5 Zolepheretsa Pali zolepheretsa zina ndi zosankha zingapo zomwe ziyenera kuganiziridwa pokonzekera kukhazikitsa kwanu. 2.5.1 Zofooka Zathupi Pogwiritsira ntchito EPLCG yowonjezereka, ma modules a EPLCG a pulayimale ndi achiwiri nthawi zambiri amakwera muzitsulo zomwezo, koma sangathe kupezeka mu gawo limodzi la node. Nthawi zambiri amayikidwa pafupi ndi mzake chifukwa cha interlink kapena relay panel cable kutalika zoletsa. Ngati makina anu amagwiritsa ntchito chingwe cholumikizira, kutalika kwake kumakhazikika pa 3 metres. Zingwe zazitali zina sizikupezeka. Ngati makina anu akugwiritsa ntchito gulu lopatsirana, kutalika kwa chingwe ku EPLCG yachiwiri ndi 2m, koma kutalika kwa chingwe kulipo. Komabe, ngati chingwe chachitali cholumikizira chikugwiritsidwa ntchito, ndalama zomwe zawonjezeredwa pa chingwe cha relay ziyenera kuchotsedwa pazingwe zonse za Port 1 ndi Port 2. Mwachiwonekere, kutalika kwa chingwe cholowetsamo kuyenera kukhala kosakwana 15 metres (50 mapazi). 2.5.2 Single vs. Multidrop Cabling Payenera kukhala chingwe chimodzi chokha kuchokera padoko kupita ku PLC, modemu, kapena chowongolera cholumikizira doko lomwe liyenera kugwiritsidwa ntchito. Ngati mukufuna kugwiritsa ntchito makonzedwe a Modbus protocol multidrop, muyenera kuyika modemu yakumaloko ku EPLCG yokhala ndi ma modemu akutali olumikizidwa ku PLC iliyonse pa netiweki. Makonzedwe a ma protocol a Allen-Bradley (AB) nthawi zonse amalumikizana kudzera pa AllenBradley communications controller (a CIM, for Communications Interface Module). Popeza woyang'anira mauthengawa amapereka maulumikizidwe ambiri, chingwe chimodzi chokha chimafunika kuchokera padoko la EPLCG kupita kwa wolamulira wa AB. 2.5.3 Utali Wachingwe Zingwe zochokera ku madoko a EPLCG sizingakhale zazitali kuposa ma cable-mita 15 (mapazi 50). Ngati mtunda wopita ku PLC kapena wowongolera mauthenga ukuposa malire awa, muyenera kugwiritsa ntchito ma modemu ofupikitsa. Onani ndime 2.6 pazolinga za modemu.