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*Valid for the normal polarity. In the case of the inverse polarity, then opposite values are valid.
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*Valid for the normal polarity. In the case of the inverse polarity, then opposite values are valid.
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- the value of the sensor open is True, the value of the sensor closed is False, the value of the quaternary input is open - On
- the value of the sensor open is False, the value of the sensor closed is True, the value of the quaternary input is closed - Off
- the values of both sensors are False (the pump valve is between end positions), the value of the quaternary input is a transition - Trans
- the values of both sensors is are True (it can be caused by e.g. a communication error or physical sensor damage), the value of the quaternary input is error - Err
| Object value | Cause |
|---|---|
| Q_Off | OFF value |
| Q_On | ON value |
| Q_Trans | TRANS value (transition from ON to OFF or vice versa is in progress) |
| Q_Err | ERR value (error state) |
| Q_Oscillate | Oscillating value (On <-> Off). The system sets a value as oscillating according to defined parameters of filtering - Oscillation limits. |
| Kotva | ||||
|---|---|---|---|---|
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If no control object and no default value are defined for an I/O tag, its value will be invalid after starting the D2000 system.
After the D2000 KOM process is (re)started, it internally invalidates the values of all I/O tags. This could be undesirable behaviour behavior (e.g. the values of output I/O tags in server protocols), therefore starting to process D2000 KOM with the parameter /KI allows to enable enabling reading the initial values of I/O tags (input as well as output ones) from the D2000 Server process after starting the D2000 KOM process.
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