LSIS XBF-AH04A

Chapter 12 Thermocouple Input Option Module (XBO-TC02A)
12.6 Conversion speed
12.6.1 Conversion speed function
(1) Conversion speed: 50ms/2Ch
(2) Sequential process method
The next channel is converted after conversion of one channel is completed.
(Run/Stop of the respective channels can be set independently.)
(3) Concept of conversion time
The time taken to convert the temperature from terminal block to digital value and save it at
internal memory
∴ Processing time = less than 50ms + 6 x scan time
Example) PLC average scan time: 1 ms
When using all channels: conversion time = 50ms+6 X1ms = 56 ms
12.7 Conversion speed
12.6.1 Temperature Display function
(1) The input temperature is converted to digital value down to the one decimal place.
Ex.) If the detected temperature is 123.4℃, its converted value to be saved to the internal
memory will be 1234.
(2) Temperature can be converted to Celsius or Fahrenheit scale temperature value as desired.
Ex) If Pt100 sensor is used, the temperature of 100.0℃ can be converted to 2120 when
Fahrenheit scale is used.
• Conversion ℃ to ℉,
32
5
9
+= CF
• Conversion ℉ to ℃,
( )
32
9
5
−= FC
(3) temperature input ranges of sensor are as follows;
• K Type : -200.0 ~ 1300.0℃ (-328.0℉ ~ 2372.0℉)
• J Type: -200.0 ~ 1200.0℃ (-328.0℉ ~ 2192.0℉)
S CAN 1 S CAN 2 S CAN 3 S CAN4 S CAN 5 S CAN6
CH1
CH0
RJC
SCAN
(㎳)
: Scan Time
SCAN
START
SCAN
END
: Register S e tting Time
: A/D Conversion Time
50ms + 6 scan
12 - 7