Monarch Instrument DC 2000 - Manual (Page 89)

Page 5-23
Chapter 5 Programming
5.6.5.19 Set Cndtionl
This menu item allows the user to program a set of conditions for a point. Up to 40 operators can be
programmed in any one conditional statement.
Programming Set Conditional - Use the UP (
↑) or DOWN (↓) Arrow Keys to highlight “Set cndtionl” and
press ENTER. Use the LEFT (
←) or RIGHT (Æ) Arrow Keys to move to a position to enter the desired
conditional statement. Forty positions or operators are possible. The display will scroll to accommodate
all forty operators. Use the UP (
↑) or DOWN (↓) Arrow Keys to select the operators as follows:
P1 to PF are used to represent Points (Must be pre programmed)
K1 to KF are used to represent Constants (Must be pre programmed)
) is a RIGHT Parenthesis
| is or
& is and
< is less than
> is greater than
= is equal to
!= is not equal to
<= is less than or equal to
>= is greater than or equal to
! is not
( is a LEFT Parenthesis
When the desired conditional statement is displayed, press ENTER and the display returns to “Set cndtionl”.
The conditional statement is evaluated from left to right. Use parenthesis to change the order of
evaluation. The result of any conditional statement evaluation is either TRUE or FALSE.
5.6.5.20 Timeout
Timeout sets a maximum time period between signal updates from the external source before flagging the
point as invalid. The point is flagged Invalid if no update is received within the specified time-out period.
Programming 0 for timeout disables it. To program Timeout, follow the instructions below.
Programming Timeout - Use the UP (
↑) or DOWN (↓) Arrow Keys to highlight “Timeout” and press
ENTER. The display reads “minutes →XXXX←”. Use the UP (↑) or DOWN (↓) Arrow Keys to select the
digit and the LEFT (
←) or RIGHT (→) Arrow Keys to move to a position to enter the desired Timeout value.
A maximum 1440 minutes (24 hours) may be entered. When the desired Timeout value is displayed,
press ENTER and the display returns to “Timeout”.
5.6.6 Linear Current/Voltage Point Types
The Recorder accepts two standard types of linear current inputs: 4 to 20mA, 0 to 20mA and 10 to 50mA.
Dry Contact will be covered later in this chapter.
Deciding Which Voltage Range to Use - In deciding which of the voltage ranges to use, select the smallest
range that will accommodate the full span of the input signal for the best resolution and accuracy of the Analog-
to-Digital Converter (ADC).