Multi-Tech Systems 7500, 7600 manual Trend Bar Graph Displays, Trend Displays

ION 7500 / ION 7600 User’s Guide Display Screen Types

Trend Bar Graph Displays

Bar graph displays can show up to four real-time (numeric) parameters along with their upper and lower extremes.

Each bar graph automatically scales its output based on the magnitude of its extremes. The real-time value of each bar graph is displayed to the right of the graph. Note that scaling is applied separately to each bar graph in the display. Do not compare the magnitudes of two values based on the size of their bars.

In the trend bar graph shown on the left, the present value of Vll ab is 271.93 V. The bar graph also indicates that it has gone as low as 271.40 V and as high as 272.47 V.

Trend Displays

The Trend Display screen graphs the historical data of up to four different parameters simultaneously. A movable cursor that consists of the intersection of a vertical line and a horizontal line displays the value and timestamp of any plotted data within a parameter. The cursor displays the values of one parameter at one time only. With the Up and Down navigation keys, the cursor can move from one parameter to another.

In addition, a Trend Display log screen displays data logs for any graphed parameter – up to 3360 logs for each parameter. That is equivalent to 35 days worth of 15 minute data. The graph is updated when a new set of values is recorded. The highest supported update speed is once per second.

The ION 7500 front panel displays three preconfigured trending screens: V-Trend (voltage), I-Trend (current), and P-Trend (power). The ION 7600 must be configured using Designer in order to provide Trend Display. Contact Technical Services if you require your ION 7600 to be configured for Trend Display.

Chapter 2 - Using The Front Panel Page 25