Integral Value Calculation; Cold Junction Compensation Method; Platinum Resistance Thermometers Input Compensation - Omron CJ Series Operation Manual

1-2-18 Integral Value Calculation

This function calculates the integral of the process value over time.
The unit can be selected as either "hour" or "minute" with the Integer Unit setting in the Expansion Set-
ting Parameters.
The integral value can be output to "Integral Value" by turning ON the Integral Value Calculation Start in
the Expansion Operation Data.
It can also be cleared to 0 by turning ON the Integral Value Reset in the Expansion Operation Data.
In addition, with the CJ1W-PH41U, the integral value can be calculated using an integral value coeffi-
cient to prevent integral value overflow.
Applicable Units
Process value

1-2-19 Cold Junction Compensation Method

This function specifies whether cold junction compensation for thermocouple inputs is to be performed
in the Analog I/O Unit or externally. The external method is enabled when the temperature difference is
measured using two thermocouples or when an external cold-junction compensator is used for greater
precision.
Applicable Units

1-2-20 Platinum Resistance Thermometers Input Compensation

This function performs compensation for resistance thermometer inputs according to the reference
resistance for a connected resistance thermometer. Set the Temperature resistance thermometer input
compensation setting in the Expansion Setting Parameters to Enable (1) and then set the Temperature
Resistance Thermometer Reference Resistance (i.e., the resistance at 23°C) in the Expansion Setting
Parameters.
Applicable Units
CJ-series Analog I/O Units Operation Manual for NJ-series CPU Unit(W498)
Isolated-type Analog Input Unit
Isolated-type Universal Input Unit
Integral value
Integral width
Isolated-type Universal Input Unit
Isolated-type Universal Input Unit
1 Overview and Features
CJ1W-PDC15
CJ1W-PH41U
Time t
CJ1W-PH41U
CJ1W-PH41U
1
1-17