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3
SPECIFICATIONS
3.2 Function List
3 - 3
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
PROCEDURES AND
SETTINGS BEFORE
SYSTEM OPERATION
5
UTILITY PACKAGE
(GX CONFIGURATOR-TI)
6
PROGRAMMING
7
ONLINE MODULE
CHANGE
8
TROUBLESHOOTING
3.2 Function List
The following table lists the Q68RD3-G functions.
Table 3.5 Function list
Item Description Reference
Temperature conversion
function
This function incorporates temperature data to a module by connecting a RTD.
Temperature data are stored into the buffer memory in 16-bit signed binary (-2000 to 8500).
Section 3.4.5
Temperature conversion
system
(1) Sampling processing
Section 3.2.1
This processing converts every temperature input value for each channel and outputs
a measured temperature value after every conversion.
(2) Averaging processing
(a) Time average
This processing averages temperature conversion by time for each channel and
stores the averaged value.
(b) Count average
This processing averages temperature conversion by count for each channel
and stores the averaged value.
(c) Moving average
This processing averages measured temperature values, which are measured
every sampling period for the specified number of times.
(3) Primary delay filter
This processing smooths measured temperature values by a preset time constant.
Conversion enable/disable
function
This function specifies temperature conversion availability (enable or disable) for each
channel.
Conversion time is 320ms/8 channels.
Section 3.4.2
RTD type selection function,
Range switching function
This function sets RTD type and measurement range for each channel. Section 4.5
Disconnection detection
function
This function detects disconnection of RTD which is connected to each conversion-enabled
channel.
Section 3.4.14
Conversion setting for
disconnection detection
function
This function is to select a value to be stored in the CH Measured temperature value
(Un\G11 to Un\G18) from "Up scale", "Down scale" or "Given value" when disconnection is
detected.
Section 3.2.2
Warning output function
(1)
(2)
Process alarm
A warning is output when the measured temperature value is equal to or more than
the process alarm upper upper limit value, or equal to or less than the process alarm
lower lower limit value.
Rate alarm
A warning is output when the measured temperature value changes in a rate by
which the measured temperature value reaches the rate alarm upper limit value or
more, or the rate alarm lower limit value or less.
Section 3.2.3
Scaling function
This function converts measured temperature value to scaling value (ratio (%)) and stores
the converted value into the buffer memory.
Section 3.4.15
to
Section 3.4.18
Offset/gain setting function This function compensates an error of measured temperature value.
Section 3.4.11
Section 4.6
Online module change
This function enables a module change without the system being stopped.
CHAPTER 7