Class Note for ECE 493 at UA-Spec Topics Optics(5)
Class Note for ECE 493 at UA-Spec Topics Optics(5)
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This 8 page Class Notes was uploaded by an elite notetaker on Friday February 6, 2015. The Class Notes belongs to a course at University of Alabama - Tuscaloosa taught by a professor in Fall. Since its upload, it has received 33 views.
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Date Created: 02/06/15
Programmable Logic Controllers PLC Addressing and Basic Instructions Electrical amp Computer Engineering Dr D J Jackson Lecture 31 Basic addressing o For the Allen Bradley PLCs and the simulator used the input and output image areas in addition to other data are held in data filesquot 0 Each data filequot holds information such as Discrete input values Discrete output values Values associated with timers Values associated with counters Status information Etc Electrical amp Computer Engineering Dr D J Jackson Lecture 32 PLC data files Unlled Help a Controller i Cammllevapemes Processor Status Malian Files y lo camamalan nnlrollei i EonliolleiPrDDemes Pincessul Slain III in Canhgmatinn Channel Eunliguialmn 3 F39DQWF pie Channelcamiguvmmn a Dela Files lg Program Files E Eluss efeience B E mm D DUVUUTF UT a CrassReVevence D n VINPUT D oaomm D 52 STATUS imam D BaaaiNARv m 525mm D T rTIMER I asawv D 5 EDLlNIEFi D rum ElJNTFiCIL a cacoumsa lN39lEEEFi D Racomaot E RESERVED D Mimosa Tl I Fume Files E mv SERVED E a Database 5 AddressSymbol mess3mm mliuclmn Eommenls g WWW Cm ung EammenlsPage Title 5 my cmmmge We a AddressSymbol Picker a AddressSymbol Vicxev Symbol Groups swam Groups Simulator data files AB PLC data files Electrical amp Computer Engineering Dr D J Jackson Lecture 33 IO memory mapping Basic AB PLC addressing Dat le type I Slot number not used with the simulator I I Input 0 output S status B binary Ttimer X1xOO Ccounter Data file number Word number selects can be omitted for the a spec ic word in basic data files a data file IO located on the controller embedded 10 is slot 0 IO added to the controller expansion IO begins with slot 1 Electrical amp Computer Engineering Dr D J Jackson Lecture 34 Basic instructions 0 Examine If Closed XIC 0 Examine If Open X10 0 Output Energize OTE 0 Output Latch OTL 0 Output Unlatch OTU o Oneshot Rising OSR tlelhesl semanelthalheew u D J Jackson uduezs Examine if closed XIC 0 Alternate name Normally open Contact 0 Use the XIC instruction in your ladder program to determine if a bit is on a wheh the lhsttucthh ls executed lt the blt addressed ls 0h 1 theh the lhsttucthh ls evaluated as TRUE a wheh the lhsttucthh ls executed lt the blt addressed ls off 0 theh the lhsttucthh ls evaluated as FALSE ll 079 c slmch is open an M Switch is closed Instruction symbol Em tlelhesl semanelthalheew u D J Jackson unuezs Examine if open XIO 0 Alternate name Normally closed contact 0 Use the X10 instruction in your ladder program to determine if a bit is off 7 When the instruction is executed if the bit addressed is on 1 tnen tne instruction is evaluated as FALSE 7 When the instruction is executed if the bit addressed is off 0 tnen tne instruction is evaluated as TRUE Instruction symbol m g E Switch is open E 02H UM E lt Switch is closed Eimnmi s EONvmerEngneering Dr D J Jackmri teamew Output energize OTE 0 Alternate name coil 0 This instruction is usually used in conjunction with XIC or XIO or any other input instruction 0 If the logic preceding the OTE instruction is true 1 the OTE instruction will be energized Not energixed 02u Lu ma um Instruction symbol nun Energized Eimnmi s EONvmerEngneering Dr D J Jackmri LeaureCLE Output latch OTL The OTL instruction is used only to turn a bit on and latch it on nm on m j C L Inltlalily not energlzed Instruction symbol w w mu 4 L L Energized ltL m 51 w Latched mm mummym nrnllaclsm Lajuml Output unlatch OTU The OTU instruction is used only to turn a bit off and latch it off OTL and OTU are generally used in pairs Instruction symbol ltugt 110 02m mm H 1 1 J 111 02m um U Elmncal a cummu Emmyn nr n I nish Lmumun Oneshot rising OSR 0 When the rung conditions preceding the OSR go from falsetotrue the OSR instruction goes true also but for only one scan Instruction symbol 05R 110 39 3300 One PLC scan Electrical 3 cirrnnuter Engineering Dr D l Jaclsnn Lecture 3711 Branches Branches can be inserted in ladder logic programs to create parallel combinations of various ladder logic elements MID 0233 l 000 j E Mil I F i L 001 END Electrical 3 cirrnnuter Engineering Dr D l Jaclsnn Lecture 3712 PLC simulator The PLC simulator LogixPro can be accessed on the ECE workstations from StartgtProgramsgt l heLearningPitgtLogixPro man Jem xmmel s li MIbIIlZuwnlLl J E ieemezi a cumrmer Enmneennu m n l Jamsnn Lecture 3713 PLC simulator usage Ladder logic elements instructions can be dragged and dropped onto the ladder window to create a ladder logic program 0 The ladder logic program is executed by going online downloading the PLC program and switching to run mode Ql l lilElE Llw EINLINE 5 an W6 Sum 0 mm v 39 llle mm 3 l Emma i We IOFFLINEONLINE contmll Download IPLC run mode E ieemezi a cumrmer Enmneennu m n l Jamsnn Lecture 11 ProSim simulations 0 The Logixpro simulator provides a set of builtin simulations 0 The 10 simulation initially will be of most use since it provides access to simulated discrete inputs switches and outputs lamps m n u earu u E letlnczl a Cnmnuler Enmneennn m n l Jamsnn Lecture 3715
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