PLC Workbook Ch. 1 Study Guide Exam.
PLC Workbook Ch. 1 Study Guide Exam. Relay Control Planners - CORRECT ANSWER PLC's were originally designed as replacements for this. Make logical decisions and control outputs based on them - CORRECT ANSWER Basically, what is the function of a PLC? Circuit wiring - CORRECT ANSWER Modifying a relay-type process control circuits usually involves changing this. False - CORRECT ANSWER True or false: Is higher current capacity an advantage that PLCs offer over conventional relay-type of controls? PLC's use programmed programmed instructions and Relay Control Systems use hardwired relay control logic. - CORRECT ANSWER Main difference between a PLC and a Relay Control Program Looks at the Inputs, mades decisions based on the progam, and sets the outputs. - CORRECT ANSWER The Central Processor Unit PLC Proprietary Architecture - CORRECT ANSWER Opposite to open architecture, makes it more difficult to connect to devices made by other PLC's, and does not allow programs to be interchanged between different PLC manufacturers Load devices such as lamps and solenoids - CORRECT ANSWER What devices do the output interface modules connect to? Field or Real World Devices - CORRECT ANSWER All devices that are physically wired to the PLC
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