PLSee Flashcards

1
Q

Good reason PLC over relay

A

All of the above

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2
Q

What binary number would be show

A

0

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3
Q

What is switching medium between field and logic?

A

LASCR optical coupler

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4
Q

Two main sections of PLC memory

A

Executive

User

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5
Q

Two roles fulfilled by input module

A

Terminates input devices

Updates PLC with device status

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6
Q

Keep communication and power cables separate because

A

Prevent cross talk (noise)

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7
Q

Two conditions code allows in same raceway

A

Termination same box

Cable insulation same rating

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8
Q

Roles fulfilled by output module

A

Terminates output devices

Receives PLC commands

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9
Q

Device connected to MCR

A

Push button

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10
Q

Why we never repeat an output

A

Creates confusion in the program

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11
Q

Would it matter if entry/exit limits were wired normally open or closed

A

No, if they were opposite they would work the opposite counter

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12
Q

Discrete input

A

Prox switch

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13
Q

Discrete output

A

Mag starter

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14
Q

Pulse generator

A

Shaft encoder

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15
Q

Analogue input

A

0-10v

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16
Q

Pulse driven

A

Stepper motor

17
Q

Analogue output

A

Servo valve