On-line debugging yog ntxiv mus nqa tawm "on-line" hloov kho ntawm qhov kev zov me nyuam los ntawm simulation debugging. Tus txheej txheem online debugging yuav tsum ua cov kauj ruam ib kauj ruam, pib los ntawm Mitsubishi PLC maub los tsuas txuas cov cuab yeej nkag, tom qab ntawd txuas cov cuab yeej tsim tawm, thiab tom qab ntawd txuas mus rau lub nra. Yog tias nws tsis muaj raws li qhov yuav tsum tau ua, kho cov khoom kho thiab cov txheej txheem. Feem ntau tsuas yog yuav tsum hloov kho qee feem ntawm txoj haujlwm.
Tom qab txhua qhov debugging tiav, nws yog xa rau kev sim ua haujlwm. Tom qab khiav haujlwm rau ib ntus, yog tias nws ua haujlwm nquag thiab qhov kev zov me nyuam tsis tas yuav tsum tau hloov kho, qhov kev zov me nyuam yuav tsum sib koom tes hauv EPROM kom tiv thaiv qhov program poob.