Ladder Logic (lad) for S7-300 and S7-400 Programming

Document Outline

• Ladder Logic (LAD) for S7-300 andS7-400 Programming
• Legal information
• Preface
• Table of Contents
• 1 Bit Logic Instructions
  • 1.1 Overview of Bit Logic Instructions
  • 1.2 ---|   |---  Normally Open Contact (Address)
  • 1.3 ---| / |---  Normally Closed Contact (Address)
  • 1.4 XOR  Bit Exclusive OR
  • 1.5 --|NOT|-- Invert Power Flow
  • 1.6 ---(   )  Output Coil
  • 1.7 ---( # )---  Midline Output
  • 1.8 ---( R )  Reset Coil
  • 1.9 ---( S )  Set Coil
  • 1.10 RS  Reset-Set Flip Flop
  • 1.11 SR  Set-Reset Flip Flop
  • 1.12 ---( N )---  Negative RLO Edge Detection
  • 1.13 ---( P )---  Positive RLO Edge Detection
  • 1.14 ---(SAVE)  Save RLO into BR Memory
  • 1.15 NEG  Address Negative Edge Detection
  • 1.16 POS  Address Positive Edge Detection
  • 1.17 Immediate Read
  • 1.18 Immediate Write
• 2 Comparison Instructions
  • 2.1   Overview of Comparison Instructions
  • 2.2 CMP ? I  Compare Integer
  • 2.3 CMP ? D  Compare Double Integer
  • 2.4 CMP ? R  Compare Real
• 3 Conversion Instructions
  • 3.1 Overview of Conversion Instructions
  • 3.2 BCD_I  BCD to Integer
  • 3.3 I_BCD  Integer to BCD
  • 3.4 I_DINT  Integer to Double Integer
  • 3.5 BCD_DI  BCD to Double Integer
  • 3.6 DI_BCD  Double Integer to BCD
  • 3.7 DI_REAL  Double Integer to Floating-Point
  • 3.8 INV_I  Ones Complement Integer
  • 3.9 INV_DI  Ones Complement Double Integer
  • 3.10 NEG_I  Twos Complement Integer
  • 3.11 NEG_DI  Twos Complement Double Integer
  • 3.12 NEG_R  Negate Floating-Point Number
  • 3.13 ROUND  Round to Double Integer
  • 3.14 TRUNC  Truncate Double Integer Part
  • 3.15 CEIL  Ceiling
  • 3.16 FLOOR  Floor
• 4 Counter Instructions
  • 4.1 Overview of Counter Instructions
  • 4.2 S_CUD  Up-Down Counter
  • 4.3 S_CU  Up Counter
  • 4.4 S_CD  Down Counter
  • 4.5 ---( SC )  Set Counter Value
  • 4.6 ---( CU )  Up Counter Coil
  • 4.7 ---( CD )  Down Counter Coil
• 5 Data Block Instructions
  • 5.1 ---(OPN)  Open Data Block: DB or DI
• 6 Logic Control Instructions
  • 6.1 Overview of Logic Control Instructions
  • 6.2 ---(JMP)---  Unconditional Jump
  • 6.3 ---(JMP)---  Conditional Jump
  • 6.4 ---( JMPN )  Jump-If-Not
  • 6.5 LABEL  Label
• 7 Integer Math Instructions
  • 7.1 Overview of Integer Math Instructions
  • 7.2 Evaluating the Bits of the Status Word with Integer Math Instructions
  • 7.3 ADD_I  Add Integer
  • 7.4 SUB_I  Subtract Integer
  • 7.5 MUL_I  Multiply Integer
  • 7.6 DIV_I  Divide Integer
  • 7.7 ADD_DI  Add Double Integer
  • 7.8 SUB_DI  Subtract Double Integer
  • 7.9 MUL_DI  Multiply Double Integer
  • 7.10 DIV_DI  Divide Double Integer
  • 7.11 MOD_DI  Return Fraction Double Integer
• 8 Floating Point Math Instructions
  • 8.1 Overview of Floating-Point Math Instruction
  • 8.2 Evaluating the Bits of the Status Word with Floating-Point Math Instructions
  • 8.3 Basic Instructions
    • 8.3.1 ADD_R  Add Real
    • 8.3.2 SUB_R  Subtract Real
    • 8.3.3 MUL_R  Multiply Real
    • 8.3.4 DIV_R  Divide Real
    • 8.3.5 ABS  Establish the Absolute Value of a Floating-Point Number
  • 8.4 Extended Instructions
    • 8.4.1 SQR  Establish the Square
    • 8.4.2 SQRT  Establish the Square Root
    • 8.4.3 EXP  Establish the Exponential Value
    • 8.4.4 LN  Establish the Natural Logarithm
    • 8.4.5 SIN  Establish the Sine Value
    • 8.4.6 COS  Establish the Cosine Value
    • 8.4.7 TAN  Establish the Tangent Value
    • 8.4.8 ASIN  Establish the Arc Sine Value
    • 8.4.9 ACOS  Establish the Arc Cosine Value
    • 8.4.10 ATAN  Establish the Arc Tangent Value
• 9 Move Instructions
  • 9.1 MOVE  Assign a Value
• 10 Program Control Instructions
  • 10.1 Overview of Program Control Instructions
  • 10.2 ---(Call)  Call FC SFC from Coil (without Parameters)
  • 10.3 CALL_FB  Call FB from Box
  • 10.4 CALL_FC  Call FC from Box
  • 10.5 CALL_SFB  Call System FB from Box
  • 10.6 CALL_SFC  Call System FC from Box
  • 10.7 Call Multiple Instance
  • 10.8 Call Block from a Library
  • 10.9 Important Notes on Using MCR Functions
  • 10.10 ---(MCR<)  Master Control Relay On
  • 10.11 ---(MCR>)  Master Control Relay Off
  • 10.12 ---(MCRA)  Master Control Relay Activate
  • 10.13 ---(MCRD)  Master Control Relay Deactivate
  • 10.14 ---(RET)  Return
• 11 Shift and Rotate Instructions
  • 11.1 Shift Instructions
    • 11.1.1 Overview of Shift Instructions
    • 11.1.2 SHR_I  Shift Right Integer
    • 11.1.3 SHR_DI  Shift Right Double Integer
    • 11.1.4 SHL_W  Shift Left Word
    • 11.1.5 SHR_W  Shift Right Word
    • 11.1.6 SHL_DW  Shift Left Double Word
    • 11.1.7 SHR_DW  Shift Right Double Word
  • 11.2 Rotate Instructions
    • 11.2.1 Overview of Rotate Instructions
    • 11.2.2 ROL_DW  Rotate Left Double Word0
    • 11.2.3 ROR_DW  Rotate Right Double Word
• 12 Status Bit Instructions
  • 12.1 Overview of Statusbit Instructions
  • 12.2 OV ---|   |---  Exception Bit Overflow
  • 12.3 OS ---|   |---  Exception Bit Overflow Stored
  • 12.4 UO ---|   |---  Exception Bit Unordered
  • 12.5 BR ---|   |---  Exception Bit Binary Result
  • 12.6 ==0 ---|   |---  Result Bit Equal 0
  • 12.7 <>0 ---|   |---  Result Bit Not Equal 0
  • 12.8 >0 ---|   |---  Result Bit Greater Than 0
  • 12.9 <0 ---|   |---  Result Bit Less Than 0
  • 12.10 >=0 ---|   |---  Result Bit Greater Equal 0
  • 12.11 <=0 ---|   |---  Result Bit Less Equal 0
• 13 Timer Instructions
  • 13.1 Overview of Timer Instructions
  • 13.2 Location of a Timer in Memory and Components of a Timer
  • 13.3 S_PULSE  Pulse S5 Timer
  • 13.4 S_PEXT  Extended Pulse S5 Timer
  • 13.5 S_ODT  On-Delay S5 Timer
  • 13.6 S_ODTS  Retentive On-Delay S5 Timer
  • 13.7 S_OFFDT  Off-Delay S5 Timer
  • 13.8 ---( SP )  Pulse Timer Coil
  • 13.9 ---( SE )  Extended Pulse Timer Coil
  • 13.10 ---( SD )  On-Delay Timer Coil
  • 13.11 ---( SS )  Retentive On-Delay Timer Coil
  • 13.12 ---( SF )  Off-Delay Timer Coil
• 14 Word Logic Instructions
  • 14.1 Overview of Word logic instructions
  • 14.2 WAND_W  (Word) AND Word
  • 14.3 WOR_W  (Word) OR Word
  • 14.4 WAND_DW  (Word) AND Double Word
  • 14.5 WOR_DW  (Word) OR Double Word
  • 14.6 WXOR_W  (Word) Exclusive OR Word
  • 14.7 WXOR_DW  (Word) Exclusive OR Double Word
• A Overview of All LAD Instructions
  • A.1 LAD Instructions Sorted According to English Mnemonics (International)
  • A.2 LAD Instructions Sorted According to German Mnemonics (SIMATIC)
• B Programming Examples
  • B.1 Overview of Programming Examples
  • B.2 Example: Bit Logic Instructions
  • B.3 Example: Timer Instructions
  • B.4 Example: Counter and Comparison Instructions
  • B.5 Example: Integer Math Instructions
  • B.6 Example: Word Logic Instructions
• C Working with Ladder Logic
  • C.1 Types of Blocks
  • C.2 EN/ENO Mechanism
    • C.2.1 Adder with EN and with ENO Connected
    • C.2.2 Adder with EN and without ENO Connected
    • C.2.3 Adder without EN and with ENO Connected
    • C.2.4 Adder without EN and without ENO Connected
  • C.3 Parameter Transfer
• Index
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