Manual

CF 66 66 Rev. C 2/05
• “VALLEY” means the lowest value of the channel since the peak/valley detector was last cleared.
RIGHT CHANNEL Menu Item
This specifies the channel that is displayed on the right half of the split display.
RIGHT SOURCE Menu Item
This lets you designate the data source of the channel monitored by the right half of the split display. Each channel
has three data sources: the live tracking value (TRACK), its highest value (PEAK), and its lowest value (VALLEY).
The options for this menu item are:
• “TRACK” means the live tracking value of the channel.
• “PEAK” means the highest value of the channel since the peak/valley detector was last cleared.
• “VALLEY” means the lowest value of the channel since the peak/valley detector was last cleared.
LEAVE MENU Menu Item
When the menu item is displayed, press [ENTER] to leave this menu. Press [EXIT] to return to the RUN mode.
15.5 Troubleshooting
Front Panel Buttons not Operating in RUN Mode
When a Split Display Virtual channel is displayed the [VALUE], [CLEAR] and [TARE] buttons have no effect. To
change one of the values shown on a Split Display Virtual channel, use the its SETUP menu. To clear peak/valley
values or tare an Input channel, use the [CHANNEL] button to select an Input channel and then use the [CLEAR] or
[TARE] buttons.
16.0 MATHEMATICS VIRTUAL CHANNEL
16.1 Features
The Mathematics Virtual Channel is a powerful, flexible means to allow DFI Instruments to perform simple to
moderate functions that previously required the use of expensive programmable logic controllers (PLC).
A Mathematics Virtual Channel is akin to a PLC; it can execute programs written in an interpretive language called
SensoCode. At the time of order, your specific application is analyzed by our sales and engineering staff and one
or more SensoCode programs are created. These SensoCode programs are loaded into the Mathematics Virtual
channels of the instrument at the factory. The end result is an instrument that meets your specific needs but is built
with proven hardware and software.
SensoCode programs allow the instrument to perform a variety of functions including:
• Mathematics: addition, subtraction, multiplication, division, square roots, etc.
• Logical: if/then condition statements, comparison of values
• Timing
• Input: from any channel’s track, peak or valley values, open0collector inputs, constant user-entered values
from the SETUP menu
• Output: Each Mathematics Channel generates its own track, peak, and valley values. A SensoCode program
can “take control” of the Limit Output and/or front panel indicator lights.
16.2 Wiring
A Virtual Channel exists in software only; it does not occupy a physical slot inside of the instrument’s chassis.
However, a Virtual Channel does require a channel number.
A SensoCode program that is executed by a Mathematics Virtual Channel can use the System connector’s Limit
Output pins and Function Input pins for its own purposes. Consult the System Calibration Sheet included with the
particular instrument for details.