Siemens SPS starter kit 6ED1057-3BA00-0AA8 12 Vdc, 24 Vdc 6ED1057-3BA00-0AA8 数据表
产品代码
6ED1057-3BA00-0AA8
Reference material
5.3 Special functions
LOGO!Soft Comfort Online Help
Operating Instructions, 06/2014
Operating Instructions, 06/2014
291
5.3.4.4
Example
Prerequisites
Sensor: temperature sensor, measuring range: -50 °C to 100 °C
Temperature to be measured: 25 °C
Temperature to be measured: 25 °C
Order of events with LOGO!Soft Comfort
1. The sensor converts the temperature from 25 °C to a voltage value of 5.0 V.
2. LOGO!Soft Comfort converts the 5.0 V to the standardized value 500.
3. Using the sensor and measurement range data, LOGO!Soft Comfort calculates and
2. LOGO!Soft Comfort converts the 5.0 V to the standardized value 500.
3. Using the sensor and measurement range data, LOGO!Soft Comfort calculates and
ascertains the value 0.15 for the gain and the value -50 for the offset.
According to the formula:
Analog value = (standardized value × gain) + offset
LOGO!Soft Comfort calculates as analog value:
Analog value = (500 × 0.15) - 50 = 25
Order of events with LOGO!
1. The sensor converts the temperature from 25 °C to a voltage value of 5.0 V.
2. LOGO! converts the 5.0 V to the standardized value 500.
3. From the sensor and measuring range data, you must establish the values for gain and
2. LOGO! converts the 5.0 V to the standardized value 500.
3. From the sensor and measuring range data, you must establish the values for gain and
offset.
According to the formulas:
Gain = (max
Sensor
– min
Sensor
) / (max
norm
– min
norm
)
and
Offset = min
Sensor
– (Gain × min
norm
)
it follows that
Gain = (100 – (-50)) / (1000 – 0) = 0.15
Offset = -50 – (0.15 × 0) = -50
4. According to the formula
Analog value = (standardized value × gain) + offset
LOGO! calculates as analog value:
Analog value = (500 × 0.15) - 50 = 25