Programmable Controllers: Theory and Implementation

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ntroduction to PLC Programming and Implementation—from relay logic to PLC logicANSWERS1 c–define the control task2 algorithm3 Guidelines for modernizing a control system include:- understanding the actual process or machine function- reviewing the machine logic and optimizing it when possible- assigning real I/O addresses and internal addresses to inputs and outputs- translating relay ladder diagrams into PLC coding4 relay ladder diagram5 b–specifications6 flowchart7 d–all of the above8StartLS2PS1StopLS1M19SwitchStartSOL1PL1PL1LS1SOL110 false; internal outputs are also documented during address assignment11 octal, decimal, hexadecimal12 I/O connection diagramIndustrial Text & Video Company www.industrialtext.com 1-800-752-839864
Introduction to PLC Programming and Implementation—from relay logic to PLC logic13 (a)L1L2PB14LS7CR1CR1PL3PS7CR1SELSOL3 UPCR2LS8*LS9CR2SOL4 FWDStartResetCR2SOL5 DWNLS8CR3CR3PL4*LS8–only N.O. is connected to PLC;it is programmed as N.C.(b)ModuleTypeRackI/O AddressGroupTerminalDescriptionInput0 0 0 PB140 0 1 LS70 0 2 PS70 0 3 SEL0 0 4 LS80 0 5 LS90 0 6 Start PB0 0 7 Reset PBSpare0 1 0 Not used• • •• • •• • •0 1 7Output0 2 0 PL30 2 1 SOL3 Up0 2 2 SOL4 Forward0 2 3 SOL5 Down0 2 4 PL40 2 5 —0 2 6 —0 2 7 —Industrial Text & Video Company www.industrialtext.com 1-800-752-839865
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Programmable Controllers: Workbook/
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Introduction to PLC Programming and
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Programmable Controllers: Theory and Implementation

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