Table of Contents
Advertisement
3 SPECIFICATIONS
3.2 Function List
Item
Temperature conversion
function
Conversion
enable/disable function
Disconnection detection
function
Range changing
function
Platinum temperature-
measuring resistor
selection function
Warning output function
Temperature conversion
system
Scaling function
Offset/gain setting
function
Online module change
3 - 3
The following table lists the Q64RD functions.
This function allows temperature data to be imported by connecting a
platinum temperature-measuring resistor.
Temperature data are 16-bit signed binary (-2000 to 8500), 32-bit signed
binary (-200000 to 850000) and stored into buffer memory.
This function specifies whether temperature conversion is enabled or disabled
on each channel.
Setting temperature conversion enable/disable reduces the processing time of
unused channels. In addition, it prevents unnecessary disconnection
detection of unused channels.
This function detects the disconnection of the connected platinum
temperature-measuring resistor on each channel.
This function changes the measured temperature range.
This function sets the type of the platinum temperature-measuring resistor per
channel.
This function outputs a warning if a temperature falls outside the user-set
temperature range.
(1) Sampling processing
A temperature input value is converted into a temperature one by one on
each channel and a digital output value is output after every conversion.
(2) Averaging processing
A temperature conversion value is averaged in terms of count or time on
each channel and a digital average value is output.
This function can convert a temperature conversion value into a preset range
ratio (%) and import it into buffer memory.
This function compensates for an error of a temperature conversion value.
A module change is made without the system being stopped.
Description
MELSEC-Q
Refer To
Section 3.4.6
Section 3.4.2
Section 3.4.5
Section 3.4.11
Section 4.6
Section 4.6
Section 3.4.10
Section 3.4.15
Section 3.2.1
Section 3.4.12
Section 3.4.13
Section 3.4.14
Section 3.4.16
Chapter 7
3 - 3
Advertisement
Table of Contents
Troubleshooting
