procurement of spares for rockwell plc installed at barauni refinery , .- dcs / plc add-on hardware&engg , controllogix processor p / n:1756-l74 , allen bradley power supply , cat no . 1756 , redundancy enhcd . module p / n:1756-rm2 , redundancy module cable , 1756-rmc1 , prosoft module: modbus / tcp mvi56e-mnet , ethernet dual port module p / n:1756-en2tr , 13 slot controllogix chassis , dgital input card , 1756-ib161 , ab , 16 pt do module p / n:1756-ob16e , analog input card , 1756-1f61 , ab , rockwell clampblock 36 pin 1756tbch , controllogix5571 p / n 1756-l71 , controlnet bridge module , 1756-cn2r , 1756pa75r red . p . supply f / g . way rwell , ab pwr . sup-1756-psca2 / a , controllogix cable cat 1756-cpr2 , adapter module , p / n:1756 cnbr , digital input / output module , analog input - 8 pts ( 36 pin ) 1756-if8 , analog o / p mod 8 ch rockwell , 1756-if8 , rockwell panel view touch 2711p-rdt12c , 3 port ethernet / ip tap cat no 1783-etap , controlnet t-tap / straight , cat no1786-tps , controlnet media bnc terminator , 1786 ? xt , controlnet rg6 co-axial conn 1786-bnc , co-axial cable , rg-6 , 17 slot controllogix chassis , 7 slot contrologix chassis 1756-a7