Microtel MicroWin 2000EX User Manual

Page 34

MicroWin 2000EX Manual

For all Digital Channel Types, the administrator has the ability to set how a channel’s state will
appear when reading an open or closed signal for a channel while using MicroWin 2000EX.

There are four labeling options: Open-Closed, OFF-ON, 0-1, and Custom Labels. The first 3
(Open-Closed, OFF-ON, 0-1) are predefined ways of labeling the Open and Closed states for a
channel. The left string represents the open value and the right string represents the closed value.
So in the case of OFF-ON, OFF will be used to represent an open value and ON will be used to
represent a closed value.

These labels can also be changed to custom values using the Custom Labels selection. These
custom open and closed labels are case sensitive and can be up to 15 characters each.

Scaling Options For Analog Channel Types

For all Analog Types, the administrator has the ability to set how a channel’s state will appear
when reading an analog value for a channel while using MicroWin 2000EX.

There are five scaling options: Percentage, 4 to 20mA, RTD Fahrenheit, RTD Celsius, and
Scaled. The first four (Percentage, 4 to 20mA, RTD Fahrenheit, RTD Celsius) are predefined
ways to scale the channel value.

Percentage is used to report how the channel value is actually being read on the dialer. Since
percentage (0% to 100%) is the way that the dialer stores its analog channel values, no
conversion of the data will take place before being displayed.

4 to 20mA is a simple conversion of the dialer’s 0% - 100% range to 4 - 20mA range. For
example, 0% = 4mA, 25% = 8mA, 50% = 12mA, 75% = 16mA, and 100% = 20mA. This is a
linear transformation from the 0% - 100% scale to 4 - 20mA scale.

RTD Fahrenheit and RTD Celsius are a little different. These two types are used with a special
RTD Input module (connects to a 100 ohm platinum probe) that is available for the dialer. It can