10-8
IM WT3001E-51EN
Note
• If the result of the waveform computation is in error, the error data is plotted at the top edge
of the screen. If this happens, the message “Math1 (Math2) Calc Error” is displayed on the
screen. The computed results of data that is not in error is displayed as a waveform. If you
save the waveform computation data to a file, the error data is recorded as ERROR. The
computation results in error in the following cases.
• If an operand of a voltage or current signal of an element that is not installed is used in
the equation.
*
• If a negative value is substituted in the SQRT parameter.
• If a negative value or zero is substituted in the LOG or LOG10 parameter.
• If a division by zero occurs.
• If any of the operands results in error.
* All of the data result in error, and the computed waveform is displayed as a line at the
top edge of the screen.
• An equation (Math1 or Math2) cannot be placed inside another equation (Math1 or Math2).
• If the waveform is not displayed, the computed waveform may be turned OFF in the
selection of the displayed waveform. For the procedure to turn the waveform ON, see
section 6.2 in the
User’s Manual IM WT3001E-01EN
.
10.4 Setting the Waveform Equation
