Lo SIF R0[965] - formulas and legend PDF

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RMIT University | School of Engineering | EEET2105/EEET2388 Industrial Automation IEC Graphical Symbols for Electrotechnical Documentation (as per AS/NZS 1102) Symbol

Name Single-Pole Relay

Double-Pole Relay

Single-Pole Contactor

Double-Pole Contactor

Triple-Pole Contactor



Single-Pole Isolator (Retentive)

Double-Pole Isolator (Retentive)

Triple-Pole Isolator (Retentive)

M 3



Three-Phase AC Motor

Fuse

Heater





Solenoid Valve

Lamp

Normally-Open Push-Button (Non-Retentive)

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RMIT University | School of Engineering | EEET2105/EEET2388 Industrial Automation

Normally-Closed Push-Button (Non-Retentive)

Normally-Open Push-Button (Retentive)

Normally-Closed Push-Button (Retentive)





Normally-Open Mushroom-Head Push-Button (Retentive, Turn Reset)

Normally-Closed Mushroom-Head Push-Button (Retentive, Turn Reset)

Normally-Open Contactor/Relay Contact

Normally-Closed Contactor/Relay Contact

Coil

Normally-Open Float-Type Level Switch

Normally-Closed Float-Type Level Switch

Normally-Open Vane-Type Flow Switch

Normally-Closed Vane-Type Flow Switch 

Normally-Open Temperature Switch ( is the specified temperature)



Normally-Closed Temperature Switch ( is the specified temperature)



Normally-Open Pressure Switch ( is the specified pressure)

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RMIT University | School of Engineering | EEET2105/EEET2388 Industrial Automation



Normally-Closed Pressure Switch ( is the specified pressure)



Normally-Open Inductive Proximity Switch

Normally-Closed Inductive Proximity Switch

Normally-Open Capacitive Proximity Switch

Normally-Closed Capacitive Proximity Switch



Normally-Open Limit Switch Normally-Closed Limit Switch

PS

Normally-Open Photoelectric Proximity Sensor (Receiver)

PS

Normally-Closed Photoelectric Proximity Sensor (Receiver)

Audible Siren

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RMIT University | School of Engineering | EEET2105/EEET2388 Industrial Automation Generic Basic Ladder Instructions (as per section 8.2 of AS IEC 61131.3-2014) Symbol Name Functionality Description tag = label for a PLC address tag {tag} = data stored at tag rci rco Convention rci = logical rung-condition-in (can be 0 or 1) rco = logical rung-condition-out (can be 0 or 1) if rci = 0 then rco = 0 else if rci = 1 then tag if {tag} = 0 then rco = 0 Normally-Open Contact else if {tag} = 1 then rco = 1 end if end if if rci = 0 then rco = 0 else if rci = 1 then tag if {tag} = 0 then rco = 1 Normally-Closed Contact else if {tag} = 1 then rco = 0 end if end if if rci = 0 then rco = 0

else if rci = 1 then Positive Transition-Sensing Contact if {tag} = 01 then rco = 1 for one scan cycle P end if end if if rci = 0 then rco = 0

else if rci = 1 then Negative Transition-Sensing Contact if {tag} = 10 then rco = 1 for one scan cycle N end if end if if rci = 0 then rco = 0 else if (tag1 CMP tag2) = 1 then rco = 1 tag1 else rco = 0 CMP Compare Contact CMP can assume: = (equal), < > not equal, < (less tag2 than), (greater than), >= (greater than or equal) if rci = 0 then rco = 0 tag {tag} = 0 (non-retentive) Coil else if rci = 1 then rco = 1 {tag} = 1 (non-retentive) end if if rci = 0 then rco = 0 tag {tag} = 1 (non-retentive) else if rci = 1 then Negated Coil rco = 1 {tag} = 0 (non-retentive) end if

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RMIT University | School of Engineering | EEET2105/EEET2388 Industrial Automation Generic Basic Ladder Instructions (as per section 8.2 of AS IEC 61131.3-2014), Continued Symbol

Name

Functionality Description if rci = 0 then rco = 0 {tag} = unchanged else if rci = 1 then rco = 1 {tag} = 1 (retentive) end if if rci = 0 then rco = 0 {tag} = unchanged else if rci = 1 then rco = 1 {tag} = 0 (retentive) end if

tag S

Set (Latch) Coil

tag R

Reset (Unlatch) Coil

Positive Transition-Sensing Coil

if rci = 01 then {tag} = 1 for one scan cycle end if rco = rci

Negative Transition-Sensing Coil

if rci = 10 then {tag} = 1 for one scan cycle end if rco = rci

P

N

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RMIT University | School of Engineering | EEET2105/EEET2388 Industrial Automation Generic Function Block Ladder Instructions (as per section 8.2 of AS IEC 61131.3-2014) Symbol Name Functionality Description if R = 1 then CV = 0 CTU tag else if ( (CU = ) and (CV < PV) ) then CV = CV + 1 Q CU end if Up Counter R if (CV ≥ PV) then Q=1 PV CV else Q=0 end if if LD = 1 then CV = PV CTD tag else if ( (CD = ) and (CV > 0) ) then CV = CV  1 Q CD end if Down Counter LD if (CV  0) then Q=1 PV CV else Q=0 end if IN t0

TP

tag

IN

Q

t3 t4 t5 t 6

PT

Q t0

Pulse Timer PT

t2

t8

PT t1

t10 PT

t3

t7

t8

t9

t3

t7

t8

t9

ET ET

PT t0

t1

t2

t10

IN

TON

tag

IN

Q

t2

t3

t4

t5

PT

Q t0

On Delay Timer PT

t1

t0

t6

t7

t6

t7

t6

t7

PT t1

t2

ET ET

PT t0

t1

t2

t3

t4

t5

t1

t3

t4

t5

IN

TOFF

tag

IN

Q

t0

t0

Off Delay Timer PT

PT

Q

t7

t6 PT

t2

t6

t7

t6

t7

ET ET

PT t0

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t1

t2

t3

t4

t5

RMIT University | School of Engineering | EEET2105/EEET2388 Industrial Automation Generic Function Block Ladder Instructions (as per section 8.2 of AS IEC 61131.3-2014), Continued Symbol Name Functionality Description if EN = 0 then ADD_I tag ENO = 0 else if EN = 1 then EN ENO ENO = 1 Add Integer B A=BC end if C A Assume A, B, and C are 16-bit signed integers SUB_I EN

tag ENO

Subtract Integer

B C

A

if EN = 0 then ENO = 0 else if EN = 1 then ENO = 1 A=BC end if Assume A, B, and C are 16-bit signed integers

MUL_I EN

tag ENO

Multiply Integer

B C

A

if EN = 0 then ENO = 0 else if EN = 1 then ENO = 1 A=BC end if Assume A, B, and C are 16-bit signed integers

DIV_I EN

tag ENO

Divide Integer

B C

A

if EN = 0 then ENO = 0 else if EN = 1 then ENO = 1 A=BC end if Assume A, B, and C are 16-bit signed integers

MOVE_I EN

tag ENO

Move Integer B

A

if EN = 0 then ENO = 0 else if EN = 1 then ENO = 1 A=B end if Assume A and B are 16-bit signed integers

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RMIT University | School of Engineering | EEET2105/EEET2388 Industrial Automation

Boolean Axioms Commutative law AB BA A B  B  A Associative law (A  B )  C  A  ( B  C ) (A  B )  C  A  ( B  C ) Distributive law A ( B  C )  ( A  B)  ( A  C) A  (B  C )  ( A  B )  ( A  C ) Idempotent A  A  ...  A  A A  A ...  A  A Identity A  0 A A 1  A A 0  0 A 1  1 Complement A  A 1 A A  0

AA 10 0 1

De Morgan’s A B  A B A  B  A B Duality If a statement is true, then the statement obtained by interchanging AND and OR and interchanging 0 and 1 is also true Precedence (from higher to lower priority) NOT, AND, OR (however, expressions inside brackets are always evaluated first) Others A  A B  A  B A B  A  A A  B  C  A  B C

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