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 udutsa malire awa, muyenera kugwiritsa ntchito ma modemu oyenda pang'ono. Onani ndime 2.6 pazolinga za modemu. EPLCG Planning, Installation, and Service2-10 5/01 2.5.4 2.5.4 Direct Connection Ngati mukulumikiza PLC imodzi (kapena AB communication controller) ku imodzi mwa madoko ndi kutalika kwa chingwe kuchokera ku EPLCG kupita ku PLC ndi zosakwana 15 cable-mamita, mungagwiritse ntchito njira ya EIA-232 molunjika). M'makonzedwe awa, chingwe cha EIA-232 choperekedwa ndi Honeywell chiyenera kulumikizidwa ku cholumikizira chomwe chimagwirizana ndi PLC yanu. Ndime 3.2.7 ndi 3.2.8 imasonyeza njira zopangira mawaya amitundu ingapo ya ma PLC ndi zida zolumikizira. 2.6 EPLCG TO PLC CONNECTIONS 2.6.1 Kugwiritsa Ntchito Ma Modem ndi Kusankha Mwachindunji, ma modemu oyenda pang'onopang'ono (omwe nthawi zina amatchedwa oyendetsa mzere), kapena zida zosinthira ma sign zitha kugwiritsidwa ntchito ndi EPLCG. Monga tanena kale, kulumikizana kwachindunji kumangofikira ma 15 chingwe-mita pakati pa EPLCI I/O kapena Relay khadi. Otembenuza ma Signal ndi zida zomwe zimasinthira ma siginecha pakati pa EIA-232 ndi EIA-422 kapena -485, ndipo amagwiritsidwa ntchito popereka masinthidwe otalikirapo kapena madontho ambiri. Modemu yongoyenda pang'ono imakhala ndi mawonekedwe a hardware a EIA-232 ku EPLCG kapena PLC yofanana ndi yomwe imaperekedwa ndi ma modemu wamba amafoni. Modemu yachidule, komabe, imagwiritsa ntchito mizere yodzipatulira (osati ya foni) ndipo imatha kumasuka ndi mawonekedwe olumikizirana omwe sangavomerezedwe pamalumikizidwe wamba a foni yam'manja. Ma modemu amafoni wamba sagwiritsidwa ntchito ndi EPLCG chifukwa amachepetsa kwambiri bandwidth, ndipo kuthamanga kwawo kofunikira (kutsika kwa baud) kumatha kusokoneza magwiridwe antchito a EPLCG. EPLCG sichigwirizananso ndi ma sign akugwirana chanza omwe amafunikira ma modemu, kuphatikiza Request-To-Send (RTS), Clear-To-Send (CTS), Carrier Detect (CD), Data Set Ready (DSR), ndi Data Terminal Ready (DTR). Zosintha zosiyanasiyana za chipangizo ndi chingwe ndizotheka. Funsani katswiri wa maulalo olumikizirana kapena ogulitsa pazida ndi ma waya ogwirizana ndi pulogalamu yanu.