Configuring Math Expressions

VR Series Configuration, with exception of Math, is described in VR Series Configuration.htm page.

When a VR18 is ordered with optional Math function it is available in the Channel configuration screens.

As reference with the bottom access door open [bottom soft buttons appear] press the Configuration button shown on bottom of Page display; Page display can be one of 6 screens - sample screen below is "Page 1" and has mode display of "mix", a combination of trend, bar graph & digital displays.

Once timed out and the bottom access door closed the display automatically expands to both the left & bottom to fill space vacated by the soft keys.

                             Then for Math configuration press the Channel Button to enter the Channel Configuration mode;

                 Note: to configure the Timer [standard on all VR Series's], Counter & Totalizer functions the Tool Button will be depressed.

The Channel screen initially shown will be an Analog input - Press Math key to select the Mathematics input.

Except for Expression, it is similar to setting up Analog channels described in VR Series Configuration.htm.

Define the name, Description, and select Type, Log Method, Log Speed, Unit, Scale Low, Scale High, and Event. 

Enter Expression column, columns appear for selection of Source, Operator and a Keyboard. 

• The Source covers all available Analog inputs, Math inputs and Counters.
• The Operators are Mathematics expressions described below.
• The Keypboard is a numberic Keyboard for data entry

Use Source, Operator and keyboard to define the Math equation.

Press directional keys < > at the bottom to select from 1 to 18 available Math channels.

Press Back key to memorize the Math settings.

                                                                              Return to Top

Math Equations available for the Expression Field