Ladder Logic (lad) for S7-300 and S7-400 Programming
Yüklə 1,39 Mb. Pdf görüntüsü
|
|
8.3 Basic Instructions 8.3.1 ADD_R Add Real Symbol ADD_R EN OUT IN2 ENO IN1 Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN1 REAL I, Q, M, L, D or constant First value for addition IN2 REAL I, Q, M, L, D or constant Second value for addition OUT REAL I, Q, M, L, D Result of addition Description ADD_R (Add Real) is activated by a logic "1" at the Enable (EN) Input. IN1 and IN2 are added and the result can be scanned at OUT. If the result is outside the permissible range for a floating-point number (overflow or underflow), the OV bit and OS bit will be "1" and ENO is "0", so that other functions after this math box which are connected by the ENO (cascade arrangement) are not executed. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.3 Basic Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming 90 Reference Manual, 04/2017, A5E41524738-AA Example ADD_R EN OUT IN2 ENO IN1 MD4 MD0 MD10 I 0.0 NOT S Q 4.0 The ADD_R box is activated by logic "1" at I0.0. The result of the addition MD0 + MD4 is output to MD10. If the result was outside the permissible range for a floating-point number or if the program statement was not processed (I0.0 = 0), the output Q4.0 is set. Floating Point Math Instructions 8.3 Basic Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming Reference Manual, 04/2017, A5E41524738-AA 91 8.3.2 SUB_R Subtract Real Symbol SUB_R EN OUT IN2 ENO IN1 Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN1 REAL I, Q, M, L, D or constant First value for subtraction IN2 REAL I, Q, M, L, D or constant Value to subtract OUT REAL I, Q, M, L, D Result of subtraction Description SUB_R (Subtract Real) is activated by a logic "1" at the Enable (EN) Input. IN2 is subtracted from IN1 and the result can be scanned at OUT. If the result is outside the permissible range for a floating-point number (overflow or underflow), the OV bit and OS bit will be "1" and ENO is logic "0", so that other functions after this math box which are connected by the ENO (cascade arrangement) are not executed. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Example SUB_R EN OUT IN2 ENO IN1 MD4 MD0 MD10 I 0.0 NOT S Q 4.0 The SUB_R box is activated by logic "1" at I0.0. The result of the subtraction MD0 - MD4 is output to MD10. If the result was outside the permissible range for a floating-point number or if the program statement was not processed, the output Q4.0 is set. Floating Point Math Instructions 8.3 Basic Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming 92 Reference Manual, 04/2017, A5E41524738-AA 8.3.3 MUL_R Multiply Real Symbol MUL_R EN OUT IN2 ENO IN1 Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN1 REAL I, Q, M, L, D or constant First value for multiplication IN2 REAL I, Q, M, L, D or constant Second value for multiplication OUT REAL I, Q, M, L, D Result of multiplication Description MUL_R (Multiply Real) is activated by a logic "1" at the Enable (EN) Input. IN1 and IN2 are multiplied and the result can be scanned at OUT. If the result is outside the permissible range for a floating-point number (overflow or underflow), the OV bit and OS bit will be "1" and ENO is logic "0", so that other functions after this math box which are connected by the ENO (cascade arrangement) are not executed. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Example MUL_R EN OUT IN2 ENO IN1 MD4 MD0 MD10 I 0.0 NOT S Q 4.0 The MUL_R box is activated by logic "1" at I0.0. The result of the multiplication MD0 x MD4 is output to MD0. If the result was outside the permissible range for a floating-point number or if the program statement was not processed, the output Q4.0 is set. Floating Point Math Instructions 8.3 Basic Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming Reference Manual, 04/2017, A5E41524738-AA 93 8.3.4 DIV_R Divide Real Symbol DIV_R EN OUT IN2 ENO IN1 Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN1 REAL I, Q, M, L, D or constant Dividend IN2 REAL I, Q, M, L, D or constant Divisor OUT REAL I, Q, M, L, D Result of division Description DIV_R (Divide Real) is activated by a logic "1" at the Enable (EN) Input. IN1 is divided by IN2 and the result can be scanned at OUT. If the result is outside the permissible range for a floating-point number (overflow or underflow), the OV bit and OS bit is "1" and ENO is logic "0", so that other functions after this math box which are connected by the ENO (cascade arrangement) are not executed. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Example DIV_R EN OUT IN2 ENO IN1 MD4 MD0 MD10 I 0.0 NOT S Q 4.0 The DIV_R box is activated by logic "1" at I0.0. The result of the division MD0 by MD4 is output to MD10. If the result was outside the permissible range for a floating-point number or if the program statement was not processed, the output Q4.0 is set. Floating Point Math Instructions 8.3 Basic Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming 94 Reference Manual, 04/2017, A5E41524738-AA 8.3.5 ABS Establish the Absolute Value of a Floating-Point Number Symbol ABS EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: absolute value of the floating-point number Description ABS establishes the absolute value of a floating-point number. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: 1 - - - - 0 1 1 1 Example MD8 ABS IN OUT MD12 I 0.0 Q 4.0 ENO EN NOT If I0.0 = "1", the absolute value of MD8 is output at MD12. MD8 = + 6.234 gives MD12 = 6.234. Output Q4.0 is "1" when the conversion is not executed (ENO = EN = 0). Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming Reference Manual, 04/2017, A5E41524738-AA 95 8.4 Extended Instructions 8.4.1 SQR Establish the Square Symbol SQR EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: square of floating-point number Description SQR establishes the square of a floating-point number. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming 96 Reference Manual, 04/2017, A5E41524738-AA 8.4.2 SQRT Establish the Square Root Symbol SQRT EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: square root of floating- point number Description SQRT establishes the square root of a floating-point number. This instruction issues a positive result when the address is greater than "0". Sole exception: the square root of -0 is -0. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming Reference Manual, 04/2017, A5E41524738-AA 97 8.4.3 EXP Establish the Exponential Value Symbol EXP EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: exponential value of the floating-point number Description EXP establishes the exponential value of a floating-point number on the basis e (=2,71828...). See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming 98 Reference Manual, 04/2017, A5E41524738-AA 8.4.4 LN Establish the Natural Logarithm Symbol LN EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: natural logarithm of the floating-point number Description LN establishes the natural logarithm of a floating-point number. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming Reference Manual, 04/2017, A5E41524738-AA 99 8.4.5 SIN Establish the Sine Value Symbol SIN EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: sine of the floating-point number Description SIN establishes the sine value of a floating-point number. The floating-point number represents an angle in a radian measure here. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming 100 Reference Manual, 04/2017, A5E41524738-AA 8.4.6 COS Establish the Cosine Value Symbol COS EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: cosine of the floating- point number Description COS establishes the cosine value of a floating-point number. The floating-point number represents an angle in a radian measure here. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming Reference Manual, 04/2017, A5E41524738-AA 101 8.4.7 TAN Establish the Tangent Value Symbol TAN EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: tangent of the floating- point number Description TAN establishes the tangent value of a floating-point number. The floating-point number represents an angle in a radian measure here. See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming 102 Reference Manual, 04/2017, A5E41524738-AA 8.4.8 ASIN Establish the Arc Sine Value Symbol ASIN EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: arc sine of the floating- point number Description ASIN establishes the arc sine value of a floating-point number with a definition range -1 <= input value <= 1. The result represents an angle in a radian measure within the range -π/2 ≤ output value ≤ +π/2 where π = 3.1415.... See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming Reference Manual, 04/2017, A5E41524738-AA 103 8.4.9 ACOS Establish the Arc Cosine Value Symbol ACOS EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: arc cosine of the floating- point number Description ACOS establishes the arc cosine value of a floating-point number with a definition range -1 <= input value <= 1. The result represents an angle in a radian measure within the range 0 ≤ output value ≤ +π where π = 3.1415.... See also Evaluating the Bits of the Status Word. Status word BR CC 1 CC 0 OV OS OR STA RLO /FC writes: x x x x x 0 x x 1 Floating Point Math Instructions 8.4 Extended Instructions Ladder Logic (LAD) for S7-300 and S7-400 Programming 104 Reference Manual, 04/2017, A5E41524738-AA 8.4.10 ATAN Establish the Arc Tangent Value Symbol ATAN EN OUT IN ENO Parameter Data Type Memory Area Description EN BOOL I, Q, M, L, D Enable input ENO BOOL I, Q, M, L, D Enable output IN REAL I, Q, M, L, D or constant Input value: floating-point OUT REAL I, Q, M, L, D Output value: arc tangent of the floating-point number Yüklə 1,39 Mb. Dostları ilə paylaş:
|