Temperature Input Units; List Of Data Processing Functions - Omron CRT1 - 10-2009 Operation Manual

Temperature Input Units

7-1

Temperature Input Units

7-1-1

Temperature Input Units

7-1-2

List of Data Processing Functions

Function
Moving average
Scaling
Peak/bottom hold
Top/valley hold
Rate of change
Comparator
Input Error Detection Disable
Function
Off-wire detection
User adjustment
Last maintenance date
Input temperature variation
detection function
Replace- Temperature
ment moni- integration func-
toring tion
functions
Top/Valley count
function
Temperature
Range Count
364
A Temperature Input Unit supports a variety of functions, such as scaling and
peak/bottom hold functions. They can internally perform math operations on
temperature input values, which previously required ladder programming at a
host PLC.
Temperature data can be obtained from math operations and allocated as I/O
in combination with Temperature Status Flags or other status information. The
CX-Integrator can be used to easily allocate and monitor status information,
set Temperature Input Unit functions, and monitor data.
The following tables list the data processing functions that can be used with
Temperature Input Units. Refer to 11-6 Temperature Input Unit Functions for
details on functions and setting methods.
Details
Calculates the average of the past eight temperature
input values, and produces a stable input value even
when the input value is unsteady.
Performs scaling.
Scaling allows conversion of temperature input values
into values using the industry unit required by the user. It
reduces the number of operations requiring ladder pro-
gramming in the master PLC Unit. Scaling also supports
an offset function for compensating for mounting errors in
sensors and other devices.
Holds the maximum and minimum temperature input val-
ues.
Holds the top and valley temperature input values.
Calculates the rate of change for temperature input val-
ues for each sampling period.
Temperature input value or data after calculation (peak
value, bottom value, top value, valley value, rate of
change) are compared to 4 types of set values: Alarm Trip
Point High (HH), Warning Trip Point High (H), Warning
Trip Point Low (L), and Alarm Trip Point Low (LL) and the
results are provided using the Temperature Data Status
Flag.
Can be used to disable detection of input errors (including
disconnection). This function is used when there are
unused inputs.
Detects disconnections of analog inputs.
Can be used to adjust the input value when an offset
occurs due to hardware errors.
Records the date of the last maintenance in the Unit.
Makes a relative comparison of two inputs and detects a
temperature difference between two inputs.
Compiles the total heat exposure of a device or sensor by
multiplying the temperature and measurement time.
Counts the number of heating cycles handled by a device
or application that has fixed cycles of temperature
changes.
Measures how long the system is at a user-set tempera-
ture or within a user-set temperature range.
Section 7-1
Default
Moving average disabled.
Disabled
0 to 28,000
Disabled
Disabled
Disabled
Disabled
Disabled
Enabled
Disabled
2008/10/1
Disabled
Disabled
Disabled
Disabled