PLC還具有即時(shí)反饋的功能，人們?cè)谶M(jìn)行操作的過(guò)程中，可以及時(shí)了解到系統(tǒng)的運(yùn)行情況，可以了解到設(shè)備的運(yùn)行情況，對(duì)于設(shè)備得到及時(shí)有效的測(cè)。設(shè)備在運(yùn)行過(guò)程中如果發(fā)生問(wèn)題或者故障，系統(tǒng)會(huì)進(jìn)行報(bào)錯(cuò)處理，并對(duì)故障發(fā)生的位置進(jìn)行顯示，通過(guò)PLC設(shè)備的提示操作進(jìn)行故障處理，也能夠根據(jù)PLC設(shè)備的反饋情況進(jìn)行手動(dòng)處理，增加了人們對(duì)故障的應(yīng)急處理。

MTL 3041 Repeater Power Supply 4/20mA for 2-Wire Transmitters
Weidmuller 7940011718 DPADCV 0-10V
Weidmuller 7940010172 Microseries Signal Converter
Sick iE 1000 SK2 Safety Key Adaptor
Weidmuller 7940010174 Relay Output Module - New No Box 
Weidmuller 7940014450 Relay Output Module - New No Box
Honeywell DC200C-2-00F-200000-0 Temperature Control Minipro - New Surplus
Sick i1001 6021013 Lock Safety Switch
Sew DEH11B Incremental Encoder Card Hyperface Option - New Surplus Open
Triconex 4000056-006 Cable Assembly 6 Feet 
XP DNR18US15 AC-DC Converter 18W 1.2A 15VDC DIN Rail Mount 
Foxboro P0971RE Cable Assembly - New Surplus 
ABB 120204-002 Ion Chamber
Honeywell LSYAC3KPC-FP Heavy Duty Limit Switch - New Surplus Open
SMC EX126D-SMJ1-X2 EX300 Serial Interface Unit - New Surplus Open
Patlite NE-24-Y LED Yellow Beacon
David Brown AH1:280 Radicon Parallel Speed Reducer, 400HP, Ratio 1.84:1
DuPont Kapton RS, Conductive Polyimide Film 200RS100, 8", 1676 ft roll, 16.5 lbs
Cutler-Hammer Medium Voltage Vacuum Contactor, SLN014S7A-554, 400A, 7200V
Schneider Electric Variable Speed Drive, ATV71HD55M3X, 75hp, 55kw, 200-240V
GE, General Electric, 115D2227G3, Printed Circuit Board,
Square D Well-Guard Combination Starter, 8940SSF4100Y1071, Size 4, Rainproof NEW
Westinghouse Insulated Bearing, 519D939G01, NSN: 3110-00-690-4405
S