Membrane pressure measuring properties (AI - subsystem-specific extension)
The Analog Input (AI) object supports following properties of the subsystem-specific extension Membrane pressure measuring.
CAUTION
Important!
Do not alter a value unless the consequences are understood. Some of these properties must not be changed.
✳ Indicates a Siemens proprietary property.
Auto-zero mode ✳ |
|
| |
|---|---|---|---|
"Auto-zero mode" defines how calibration will be handled. | |||
1 | Disabled | ||
2 | On demand | ||
3 | Time based (see "Auto-zero mode, timer") | ||
Disable auto-zero mode ✳ |
|
|
|---|---|---|
"Disable auto-zero mode" defines whether calibration is temporarily disabled while the application reads large airflow changes. | ||
Auto-zero mode, timer ✳ |
|
|
|---|---|---|
"Auto-zero mode, timer" defines the time value for calibration frequency. | ||
Pressure deviation ✳ |
|
|
|---|---|---|
"Pressure deviation" defines the dead band offset within which the measured airflow must be for a length of time before calibration is allowed. (see also "Pressure deviation hold time") | ||
Infinite impulse resp.filter time ✳ |
|
|
|---|---|---|
"Infinite impulse resp.filter time" defines an RMS value for internal system response time. | ||
In use objects list ✳ |
|
|
|---|---|---|
"In use objects list" includes a list of all object identifiers of BA-Objects which are currently “in-use”. | ||
Samples for average sensors calculation ✳ |
|
|
|---|---|---|
"Samples for average sensors calculation" defines the number of samples taken continuously in a rolling sample average. | ||
Supported signal types ✳ |
|
| |
|---|---|---|---|
"Supported signal types" defines which signal types are supported by the hardware. | |||
Signal types of analog input | |||
Description (en) | Name for import | ||
0...10 V DC 4...20 mA 0...10 V Normaized 4...20 mA Normaized Temperature (LG-Ni1000 -50...180 °C) Temperature (Pt1000, NA) Temperature (Pt1000, EU) Temperature (PTC) Temperature (NTC 10k) Temperature (NTC 100k) 0...2500 Ohm | AI 0-10V AI 4-20mA AI 0-10 V DC (0-100 %) AI 4-20 mA (0-100 %) AI Ni1000 AI PT1K375 AI PT1K385 AI T1(PTC) AI NTC10K AI NTC100K AI 2500 Ohm | ||
The signal type defined in the property "Signal type" has to be set to "True". | |||
Signal type |
|
|
|---|---|---|
'Signal type' defines the signal type for its I/O channel. The available signal types depend on the specific hardware, e.g. I/O module type or Onboard-I/O type. | ||
Property ID: 4968 | ||
Pressure deviation hold time ✳ |
|
|
|---|---|---|
"Pressure deviation hold time" defines how long the measured airflow must remain stable before calibration is allowed. | ||
Calibration command ✳ |
|
| |
|---|---|---|---|
"Calibration command" triggers the calibration of the device. | |||
Ready | The device is ready for a new request. | ||
Calibrate | Starts the calibration of the device. | ||
Auto-zero mode, zero value ✳ |
|
|
|---|---|---|
"Auto-zero mode, zero value" defines the "counts value" recorded during the last calibration cycle that is used to calculate the zero offset of the sensor. | ||