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CMPN 337 - Chapter 1-2-3 > Theory > Flashcards

Theory Flashcards

25m

1
Q

According to RS 485 Standard, what is max length cable segment?

A

1200m

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2
Q

RS-422 - max segment cable length?

A

1200m

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3
Q

Best describes a synchronous serial communication system?

A

Uses a long string of bts to synchronize receiver before data is detected

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4
Q

How many masters/drivers on RS232 segment?

A

1

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5
Q

How many receivers/slaves on 4-wire RS 485 segment?

A

31

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6
Q

How many receivers/slaves on 2-wire RS 485 segment?

A

32

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7
Q

How many receivers/slaves on 4-wire RS 422 segment?

A

10

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8
Q

How many masters/drivers on 4-wire RS 422 segment?

A

1

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9
Q

How many nodes on 2-wire RS 485

A

32

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10
Q

Max cable length for RS232 19.2kBaud system utilizing copper conductor

A

25

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11
Q

How many masters/drivers on 4-wire RS 485 segment?

A

1

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12
Q

How many receiver/slaves on an RS 232 segment?

A

1

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13
Q

RS 232

A

unbalanced

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14
Q

RS 485

A

balanced

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15
Q

RS 422

A

balanced

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16
Q

transmission mode for RS 232

A

Full Duplex

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17
Q

transmission mode for 4-wire RS 485

A

Full Duplex

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18
Q

transmission mode for 4-wire RS 422

A

Full Duplex

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19
Q

transmission mode for 2-wire RS 485

A

Half Duplex

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20
Q

approximate resistance of End of The Line Resistor

A

100-120 Ohm

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21
Q

RS 232

A

Tx carries data from DTE to the corresponding pin on DCE
CTS is output from DCE
Rx carries data from DTE to the corresponding pin on DTE
RX is an output from DTE

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22
Q

Max Baud rate for RS 485

A

10 Mbps

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23
Q

most accurate description of a cable used to connect a DTE to DTE

A

Null-Modern cable

24
Q

most accurate description of a cable used to connect a DTE to DCE

A

Straight through cable

25
Q

RS 485 utilize a —– transmission system which requires —- per signal

A

balanced
2 conductors

26
Q

RS serial communication standard use a —- voltage to define a logic 0 state and — Voltage to define 1 state for DATA LINES

27
Q

RS serial communication standard use a —- voltage to define a logic 0 state and — Voltage to define 1 state for CONTROL LINES

28
Q

Matching DB9 connector NULL MODEM, DTE to DTE with hardware hand shaking

A

GND - GND
DCD - DCD
RTS - CTS
Rx - Tx
DTR - DSR
Tx - Rx
CTS - RTS
DSR - DTR

29
Q

Matching DB9 PIN

A

Pin 1 - DCD - DATA CARRIER DETECT
PIN 2- Rx - RECEIVE
PIN 3- Tx - TRANSMIT
PIN 4 - DTR - DATA TERMINAL READY
PIN 5 - GND - GROUND
PIN 6 - DSR - DATA SET READY
PIN 7 - RTS - READY TO SEND
PIN 8 - CTS - CLEAR TO SEND
PIN 9 - RI - RING INDICATOR

30
Q

Place holder for manually marked network diagram

A

Physical sheet

31
Q

Baud Rate

A

The rate at which signal changes

32
Q

communication mode that used for simultaneous bi-directional communication

A

Full Duplex

33
Q

DCE

A

Data Communication Equipment

34
Q

DTE

A

Data Terminal Equipment

35
Q

Which factor affect transmission speed

A

error rate
band width
signal to noise ratio
data throughput

36
Q

What was the 1st DCS manufacturer?

A

Yokohama Centum

37
Q

which year?

38
Q

how many bits in a Nibble?

39
Q

How many bits in an Octet?

40
Q

How many bits in a Byte

41
Q

How many bits in a word

42
Q

how many bits in a single deterger?

43
Q

Greater than 500 IP & OP device

44
Q

Greater than 100 less than 500 IP & OP devices

45
Q

Lees than 100 IP & OP

46
Q

Control Large & Local geographic areas

47
Q

Responsible for data communications collection

48
Q

Isolated skid automation

49
Q

Control Far & Large geographic areas

50
Q

Regulatory control excellence

51
Q

Discrete Control superiority

52
Q

5 IEC-61131-3 programming languages

A

Instruction List, Function Block, Ladder Logic, Sequential Function Chart, Structure Text

53
Q

6 largest current day DCS Manufacturer

A

Emerson, Rockwell, Yokohama, Honey Well, Schneider Electric, ABB

54
Q

6 current day DCS respectives

A

Delta V, Plant Pax, 800xA, PCS 7, Eco Structure

CMPN 337 - Chapter 1-2-3 (2 decks)

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