Lub ntsiab ua haujlwm tseem ceeb ntawm lub tshuab ntsug yog tias cov khoom tau muab tso rau ntawm ib lub turntable, uas rotates thiab drives cov khoom muag. Ib txhij, qhwv caj npab qhwv cov khoom. Lub caj npab qhwv tau nruab nrog cov khoom siv ua yeeb yaj kiab. Zaj duab xis yog kos los ntawm cov khoom xa khoom thiab rhuab los ntawm cov khoom siv cua sov los ua cov muag muag thiab nplaum. Lub caj npab ces nruj nreem qhwv lub rhuab zaj duab xis nyob ib ncig ntawm cov khoom.
Thaum lub sij hawm qhwv cov txheej txheem, Wrapping tshuab tswj kev tswj hwm xws li caj npab ceev, thiab qhwv kev nruj kev raws li qhov loj me, cov ntawv sau, thiab kev sau cov khoom ntawm cov khoom. Qhov no ua kom pom tseeb tias cov yeeb yaj kiab yog tusyees qhwv ib ncig ntawm cov khoom, ua tiav kev ua kom muaj kev nyab xeeb thiab kev tiv thaiv. Tsis tas li ntawd, cov kev tswj hwm cov txheej txheem tuaj yeem siv kev siv tshuab los txhim kho kev ua haujlwm thiab ntim khoom zoo.
Ntsug qhwv cov cav hlau feem ntau siv cov qauv PLC nrog ntau txoj haujlwm ua haujlwm, suav nrog phau ntawv, semi- Tsis siv neeg. Cov neeg ua haujlwm tuaj yeem xaiv hom kev ua haujlwm tsim nyog raws lawv cov kev xav tau, ua tiav cov txheej txheem Wrapping sai thiab yooj yim. Tsis tas li ntawd, qee siab tshaj plaws ntsug wrapping tshuab kuj tseem muaj ntau yam kev hloov pauv ntawm lub sijhawm, thiab kev saib xyuas raws sijhawm thiab tswj kom muaj kev ruaj ntseg thiab kev ntseeg tau ntawm kev ntim khoom zoo.