Owner's manual

App-8 IM 04L31A01-01E
Status of Control Output Terminal Block/Control DIO Expansion Terminal Block's
Contact Output (DO001-DO006, DO101-DO106, DO201-DO206, RO001-RO012)
You can set each contact output status to 1 or 0 and use them for computation.
Internal Switches (SW01-SE36)
You can set each internal switch status to 1 or 0 and use them for computation.
Data Types That Can Be Used in the Computation Function
Computation Measurement PV/SP Analog Logic
type computation computation retransmission computation
Measurement data Yes Yes Yes Yes
Measurement computed data Yes Yes Yes Yes
Control measurement data* No Yes Yes Yes
Internal/external control data Yes Yes Yes Yes
Constants for measurement Yes No No No
computation
Constants for control computation No Yes Yes Yes
Communication input data Yes Yes Yes Yes
Measurement remote input Yes Yes Yes Yes
Control contact input Yes Yes Yes Yes
Control expansion contact input Yes Yes Yes Yes
Control contact output No Yes Yes Yes
Control expansion contact output No Yes Yes Yes
Internal switches No Yes Yes Yes
* When PV/SP computation is OFF.
Handing of the Unit in Computations
The unit corresponding to the measured/computed data in the equation is not
compensated
In computations, measured and computed data are handled as values without units. For
example, if the measured data from channel 01 is 20 mV and the measured data from
channel 02 is 20 V, the computed result of 01 + 02 is 40.
Order of Operations in Equations
The order of operators in equations is as follows. Operators are listed in a decreasing
order of precedence.
Type Operator
(high order of precedence)
Functions ABS(), SQR(), LOG(), EXP(), TLOG.MAX(), TLOG.MIN(),
TLOG.P-P(), TLOG.SUM(), TLOG.AVE(), CLOG.MAX(),
CLOG.MIN(), CLOG.P-P(), CLOG.AVE()
Conditional expression [eq1?eq2:eq3]
Power **
Logical negation NOT
Multiplication and division *, /
Addition and subtraction +, –
Greater than and less than .GT., .LT., GE., LE.
Equal and not equal .EQ., .NE.
Logical product AND
Logical sum and exclusive logical sum OR, XOR
(low order of precedence)
Displaying the Computed Data
The computed data of computation channels can be displayed in each operation display.
Displaying Waveforms and Bar Graphs
The data are displayed in the range defined by the upper and lower limits of the span.
For the procedure in assigning measured data to measurement channels, see
section 10.1,
“Assigning Computation Channels and Setting Computing Equations, Constants and Tags.”
For the procedure in setting other items related to the display, see chapter 8, “Operations
for Changing the Displayed Contents.”
Appendix 2 Supplementary Explanation of the Computation Function