TPC PLC TEST QUESTIONS WITH
COMPLETE SOLUTIONS
Whatziszthezpurposezofzazrungzcomment?z-zans--✔✔Explainzazprogramzoperation
Accordingztozthezstackzrule,zwhatzhappenszeachztimezazloadzinstructionziszused?z-zans--
✔✔Thezlogicziszpushedzdownzonezlevel
Whenzprogrammingzinzladderzlogic,ztagszarezusedztoz-zans--✔✔identifyzazdevice
InzBooleanzprogramming,zallzlogicziszsomezcombinationzofzwhichzoperations?z-zans--
✔✔AND,NOT,OR
Althoughzandzoutputzgenerallyzappearszonzonlyzonezrungzofzazladderzlogiczprogram,zitzma
yzbezenergizedzbyzseveralzsetszofzconditionszthatzappearzasz-zans--✔✔branches
Theztemperaturezrangezazthermocouplezcanzdetectziszdeterminedzbyzthez-zans--
✔✔combinationzofzmetalszused
TheznumberzofzTTL,zoutputzdeviceszazTTLzoutputzmodulezcanzdriveziszcalledz-zans--
✔✔fanout
IfzanzI/Ozmodulezsupplieszcurrent,zitziszconsideredza(n)z______zmodule.z-zans--
✔✔sourcing
TozbezusefulztozazPLC,zanalogzinputzsignalszmustzbez_______zbyzanzinputzmodulez-zans--
✔✔digitized
Whichzoutputzdeviceziszsometimeszusedzaszazrepeater,zusingzazsignalztozcontrolzseveralzdi
fferentzloads?z-zans--✔✔Relay
ThezeasiestzwayztozdevelopzazPLCzprogramziszusuallyztozdividezthezlogiczintozdifferentz-
zans--✔✔tasks
Whenzsizingzazprogrammablezcontrollerzsystem,zyouzmustzconsiderzI/O,zmemory,zandz-
zans--✔✔scanztime
Whichzhardwarezdocumentationzdrawingzidentifieszallzsystemzcomponentszandzwiringzter
minationzpoints?z-zans--✔✔Panelzlayout
, Workingzwithzaccurate,zthoroughzspecificationszensureszthatz-zans--
✔✔allzeffortszmoveztowardzazcommonztarget
Azbillzofzmaterialzshouldzincludezazcompletezlistzofzpartznumbers,zdeviceznumberszcross-
referencezinzthezdrawing,zandzpartz-zans--✔✔manufacturers
AddingzI/Ozpointszinzanzexistingzrackziszcalledz-zans--✔✔localzexpansion
ThezspeedzatzwhichzazLANzprocesseszazpiecezofzinformationziszcalledz-zans--✔✔baudzrate
IfzazlocalzI/OzrackzcannotzaccommodatezadditionalzI/Ozmodules,zyouzshouldz-zans--
✔✔createzazremotezI/Ozrack
Whichztypezofzdataztransmissionzuseszazsinglezfrequency?z-zans--✔✔baseband
Whichznetworkzcontrolzstructurezmakeszitzpossiblezforzprocessorsztozcommunicate?z-
zans--✔✔Protocol
WhichzmathematicalzoperationziszthezsamezaszthezBooleanzORzfunction?z-zans--
✔✔Addition
ThezBooleanzNOTzfunctionzactszasza(n)z-zans--✔✔inverter
Inzladderzlogic,zthezoutputzinstructionzthatzlookszlikezazcoilziszcalledz-zans--
✔✔outputzenergize
Whichzdevicezcreateszaznumericallyzcodedzbinaryzsignalztozrepresentzanzoutputzcondition
?z-zans--✔✔Encoder
Whichzdigitziszthezmostzsignificantzinztheznumberz2684?z-zans--✔✔2
MostzhardwarezproblemszinzazPLCzsystemzoccurzinzthez-zans--✔✔I/Ozdevices
OncezyouzunderstandzhowzazPLCzsystemzworks,ztheznextzstepzinztroubleshootingzitzisztoz-
zans--✔✔gatherzinformation
Whichzdocumentationzshowszhowzallzfieldzdeviceszarezwiredzandzconnectedztozthezcontrol
ler?z-zans--✔✔Schematiczdiagram
Whichzofzthezfollowingziszthezmostzcommonzcausezofzazprogramzproblem?z-zans--
✔✔Changeszmadeztozthezoriginalzprogram
Aszazgoodzgeneralzrule,zyouzshouldzreplacezthezbatteryzinzazprogrammablezcontrollerz-
zans--✔✔annually
COMPLETE SOLUTIONS
Whatziszthezpurposezofzazrungzcomment?z-zans--✔✔Explainzazprogramzoperation
Accordingztozthezstackzrule,zwhatzhappenszeachztimezazloadzinstructionziszused?z-zans--
✔✔Thezlogicziszpushedzdownzonezlevel
Whenzprogrammingzinzladderzlogic,ztagszarezusedztoz-zans--✔✔identifyzazdevice
InzBooleanzprogramming,zallzlogicziszsomezcombinationzofzwhichzoperations?z-zans--
✔✔AND,NOT,OR
Althoughzandzoutputzgenerallyzappearszonzonlyzonezrungzofzazladderzlogiczprogram,zitzma
yzbezenergizedzbyzseveralzsetszofzconditionszthatzappearzasz-zans--✔✔branches
Theztemperaturezrangezazthermocouplezcanzdetectziszdeterminedzbyzthez-zans--
✔✔combinationzofzmetalszused
TheznumberzofzTTL,zoutputzdeviceszazTTLzoutputzmodulezcanzdriveziszcalledz-zans--
✔✔fanout
IfzanzI/Ozmodulezsupplieszcurrent,zitziszconsideredza(n)z______zmodule.z-zans--
✔✔sourcing
TozbezusefulztozazPLC,zanalogzinputzsignalszmustzbez_______zbyzanzinputzmodulez-zans--
✔✔digitized
Whichzoutputzdeviceziszsometimeszusedzaszazrepeater,zusingzazsignalztozcontrolzseveralzdi
fferentzloads?z-zans--✔✔Relay
ThezeasiestzwayztozdevelopzazPLCzprogramziszusuallyztozdividezthezlogiczintozdifferentz-
zans--✔✔tasks
Whenzsizingzazprogrammablezcontrollerzsystem,zyouzmustzconsiderzI/O,zmemory,zandz-
zans--✔✔scanztime
Whichzhardwarezdocumentationzdrawingzidentifieszallzsystemzcomponentszandzwiringzter
minationzpoints?z-zans--✔✔Panelzlayout
, Workingzwithzaccurate,zthoroughzspecificationszensureszthatz-zans--
✔✔allzeffortszmoveztowardzazcommonztarget
Azbillzofzmaterialzshouldzincludezazcompletezlistzofzpartznumbers,zdeviceznumberszcross-
referencezinzthezdrawing,zandzpartz-zans--✔✔manufacturers
AddingzI/Ozpointszinzanzexistingzrackziszcalledz-zans--✔✔localzexpansion
ThezspeedzatzwhichzazLANzprocesseszazpiecezofzinformationziszcalledz-zans--✔✔baudzrate
IfzazlocalzI/OzrackzcannotzaccommodatezadditionalzI/Ozmodules,zyouzshouldz-zans--
✔✔createzazremotezI/Ozrack
Whichztypezofzdataztransmissionzuseszazsinglezfrequency?z-zans--✔✔baseband
Whichznetworkzcontrolzstructurezmakeszitzpossiblezforzprocessorsztozcommunicate?z-
zans--✔✔Protocol
WhichzmathematicalzoperationziszthezsamezaszthezBooleanzORzfunction?z-zans--
✔✔Addition
ThezBooleanzNOTzfunctionzactszasza(n)z-zans--✔✔inverter
Inzladderzlogic,zthezoutputzinstructionzthatzlookszlikezazcoilziszcalledz-zans--
✔✔outputzenergize
Whichzdevicezcreateszaznumericallyzcodedzbinaryzsignalztozrepresentzanzoutputzcondition
?z-zans--✔✔Encoder
Whichzdigitziszthezmostzsignificantzinztheznumberz2684?z-zans--✔✔2
MostzhardwarezproblemszinzazPLCzsystemzoccurzinzthez-zans--✔✔I/Ozdevices
OncezyouzunderstandzhowzazPLCzsystemzworks,ztheznextzstepzinztroubleshootingzitzisztoz-
zans--✔✔gatherzinformation
Whichzdocumentationzshowszhowzallzfieldzdeviceszarezwiredzandzconnectedztozthezcontrol
ler?z-zans--✔✔Schematiczdiagram
Whichzofzthezfollowingziszthezmostzcommonzcausezofzazprogramzproblem?z-zans--
✔✔Changeszmadeztozthezoriginalzprogram
Aszazgoodzgeneralzrule,zyouzshouldzreplacezthezbatteryzinzazprogrammablezcontrollerz-
zans--✔✔annually
