mekiIO

DDC28P/IO22U/28U/28P/KXM16P/22P/IP0080

AO

AO is the component provides an interface for the physical analogue output point that is able to source/drive a 0 to 20mA current or 0 to 10V voltage signal. The output type is selected via AO configuration and hardware jumper setting.

The analogue output provides 16 levels of prioritized command to control to the physical point. In1 has the highest priority whereas In16 has the lowest. The input may have a commanded value (valid floating value) or a null value (usually NaN in floating point). A null value indicates that there is no value (or not active) in that priority. The analogue output continuously monitors all prioritized inputs (In1 to In16) to locate the entry with the highest priority non-NULL value and outputs it.

Parameters:

• Out (real, percentage) – Output value

• Rawvalue (real) – Raw output value depending on the AOType, equal to 0-10 when AOType is set to 0V-10V

• Minvalue (real, percentage) – Min output value

• Maxvalue (real, percentage) – Max output value

• In1-In16 (real) – 16-level priority input, higher level input have higher priority to control Out value

• Fallback (real) – Default Out value when all In1-In16 are Null

• ReverseOutput (boolean) –

  Enables to reverse the output.

  • False = normal output, True = reverse output

  • ReverseOutput (%) = 100 - Out (%)

• OutofServices (boolean) –

  Enables the output to make loss of every function.

  • False = normal output, True = out of service.

  • When OutofService is true, the Out is always 0

• SquarerootOutput (option) –

  Enables the output to take the square root operation, relationship between output value and physical value:

  • Physical Calculated Value (%) = Out (%) * Out (%)

  • Physical Value = Physical Calculated Value (%) * (Out High - Out Low) + Out Low

  • Out (%) = 100 * Out/ (ScaleHigh - ScaleLow)

  • *Out*(High) = 10V (voltage type), 20mA (current type)

  • *Out*(Low) = 0V (voltage type), 0mA (current type 0 - 20mA), 4mA (current type 4 - 20mA)

• ClampingHighEnable (boolean) – Enables the clamping high limit control for the output value.

• ClampingLowEnable (boolean) – Enables the clamping low limit control for the output value.

• ResetMinvalue (boolean) – Enables to reset the MinValue back to 0.

• ResetMaxvalue (boolean) – Enables to reset the MaxValue back to 0.

• ClampingHigh (real) – Output high limit, set the Maxvalue value even if it exceeds the processed value

• ClampingLow (real) – Output low limit, set the Minvalue value even if it falls the processed value

• ScaleHigh (real) – Output scale high value

• ScaleLow (real) –

  Output value when physical output value equals to lowest value

  • Voltage (0 - 10V): 0V

  • Current (0 - 20mA): 0mA

  • Current (4 - 20mA): 4mA

  AO uses the scalelow and scalehigh to convert the output value to physical value. Raw value register shows the physical output.

  • Physical Value = (Out (%)) * (ScaleHigh - ScaleLow)

  For instance:

  • AOType = Current 4 - 20mA

  • ScaleLow Value = 0%

  • ScaleHigh Value = 100%

  • Out Value = 50%

• AOType (option) –

  • Voltage, 0-10V

  • Current, 4mA-20mA

  • Current, 0mA-20mA

DI

DI component is used for reading the digital value connected to one of the physical digital input points on the controller. It is typically used to monitor the status of contact closures from various field devices such as switches, open/close sensors or any other dry contact devices.

There are 16 digital input points on IO28U/DDC28P controller. Eight of them are derived directly from digital input detection circuitry (+5Vdc pulled up), named as DI1 to DI8. Whereby the other eights are derived from universal input (UI or AI) using value conversion (DI9 to D16). DI1 to DI8 might have different characteristics comparing to DI9 to DI16 depend on the AI settings. Please refer to AI component section regarding the conversion.

Parameters:

• Out (boolean) – Output state

• Alarm (boolean) – Digital alarm state

• OffLatch (boolean) – Off lock status

• OnLatch (boolean) – On lock status

• OffCounter (integer) – Accumulate number when off counter, from ranges of 0 - 65535

• OnCounter (integer) – Accumulate number when on counter, from ranges of 0 - 65535

• OnTimer (integer) – Accumulate counting value when on timer, from ranges of 0 - 65535

• OffTimer (integer) – Accumulate counting value when off timer, from ranges of 0 - 65535

• OutofServices (boolean) –

  Enables the output to make loss of every function.

  • False = normal output, True = out of service.

  • When OutofService is true, the Out is always 0

• Polarity (option) –

  Inverts the output polarity

  • Direct = normal output

  • Reverse = negation

• UserSetState (boolean) – Does not work until OutofService is true, Out equal to User Set State when OutofService is true

• AlarmEnable (boolean) –

  Digital input set to alarm state, based of alarm type

  • Enable when alarm is triggered

  • Disable when alarm failure

• AlarmMonitorState (boolean) –

  DI alarm state

  • off = Alarm is triggered when DI is off

  • on = Alarm is triggered when DI is on

• AlarmResetType (option) –

  Mode of alarm recovery

  • Auto = When DI is not in the alarm monitor state, alarm will be restored back to normal

  • Manual = When DI produces alarm, it only can be manually recovered

• ResetAlarm (option) – Alarm recovered manually when AlarmResetType is set to Manual

• ResetOffCounter (boolean) – Enables to reset the OffCounter to 0

• ResetOnCounter (boolean) – Enables to reset the OnCounter to 0

• ResetOffTimer (boolean) – Enables to reset the OffTimer to 0

• ResetOnTimer (boolean) – Enables to reset the OnTimer to 0

• ClearOffLatch (boolean) – Clear OffLatch

• ClearOnLatch (boolean) – Clear OnLatch

• AlarmDelayTime (integer, millisecond) – Alarm delay time when alarm triggered

DO

DO is used for switching a physical digital output point OFF or ON. The typical usage is starting/stopping the external equipment such as light, valve, fan or any other digital control equipment. The DO component monitors the required set state and determines the proper hardware output action based on its settings. There are eight digital output points on IO28U/IO22U/DDC28P controller. Each of them is driven by a dry contact relay (SPST Relay) which is able to drive the external devices up to 1 Ampere (AC/DC).

Digital output is a prioritized command with 16 priorities control plus a default value (relinquish default). In1 has the highest priority while in16 has the lowest. In6 is reserved for minimum/maximum time controlling. The value can be commanded value (false = 0, true = 1) or a null value (= 2). A null value indicates that there is no value (or not active) in that priority.

Parameters:

• Out (boolean) – Output state

• In1-In16 (real) – 16-level priority input, higher level input have higher priority to control Out value

• Fallback (boolean) – Default Out value when all In1-In16 are Null

• OffCounter (integer) – Accumulate number when off counter, from ranges of 0 - 65535

• OnCounter (integer) – Accumulate number when on counter, from ranges of 0 - 65535

• OnTimer (integer) – Accumulate counting value when on timer, from ranges of 0 - 65535

• OffTimer (integer) – Accumulate counting value when off timer, from ranges of 0 - 65535

• OutofServices (boolean) –

  Enables the output to make loss of every function.

  • False = normal output, True = out of service.

  • When OutofService is true, Out is always 0

• Polarity (option) –

  Inverts the output polarity,

  • Direct = normal output

  • Reverse = negation

• MinOffOnStart (boolean) – Time delay of output conversion, based on MinOffTime and MinOnTime

• ResetOnCounter (boolean) – Enables to reset the OnCounter to 0

• ResetOffCounter (boolean) – Enables to reset the OffCounter to 0

• ResetOffTimer (boolean) – Enables to reset the OffTimer to 0

• ResetOnTimer (boolean) – Enables to reset the OnTimer to 0

• ResetOffTimer – Enables to reset the OffTimer to 0

• InterOutputDelay (integer, second) – Output delay time

• MinOffTime (integer, second) – Minimum time delay when output transitioned from on to off

• MinOnTime (integer, second) – Minimum time delay when output transitioned from off to on

UI

UI is used for reading the analogue value connected to one of the physical universal input points on a controller. There are eight universal input points on IO22U/IO28U/DDC28P controller that support voltage, current, resistance and temperature sensors. The input type is selected via AI configuration and hardware jumper setting. For temperature sensors, the standard curves for 10K Thermistor (with or without 11K shunt), 1K Balco and 1K Platinum (in degree C and Fahrenheit F) are provided within the internal tables. Additional tables are also available as user defined curves.

Parameters:

• Out (real) – UI Output physical value

• MaxValue (real) – Maximum record UI received

• MinValue (real) – Minimum record UI received

• Rawvalue (real) – Raw output value depending on the UIType, equal to 0-10 when UIType is set to 0V-10V

• Reliability (boolean) – Display object state

• Alarm (boolean) – Alarm state of selected channel based on limit of configurations

• AlarmType (state) – Alarm type

• AlarmResetType (option) – Auto or manually recovery alarm

• HighAlarmEnable (boolean) – Enable AlarmHighLimit

• LowAlarmEnable (boolean) – Enable AlarmLowLimit

• LowCutOffEnable (boolean) –

  Enable low level cuttoff

  • Low cutoff function helps to filter unstable value by forcing the output value to scale low value when iput valvue is lower than low cutoff value.

  • The cutoff enable can only be applied to current and voltage input type selection

• OutofServices (boolean) –

  Enables the output to make loss of every function.

  • False = normal output, True = out of service.

• Linearization (option) –

  Squareroot operation on input value, only applicable for input type voltage and current

  • Direct = linearization

• AlarmReset (boolean) – Reset alarm state, only applies to manual alarm reset

• ResetMinvalue (boolean) – Enables to reset the MinValue back to 0

• ResetMaxvalue (boolean) – Enables to reset the MaxValue back to 0

• AlarmDeadband (boolean) –

  Output alarm deadband value, deadband applied to AlarmLowLimit and AlarmHighLimit value to determine the return from alarm trip points.

  • Out must lower than the AlarmHighLimit by alarm deadband limit to return from high alarm trip point

  • Out must greater than the AlarmLowLimit by alarm deadband limit to return from low alarm trip point

• AlarmDelay (integer, second) –

  UI alarm delay time, maximum 65535 seconds

  The delay duration that Out must be:

  • in the alarm condition before alarm state is generated

  • in the non-alarm condition before returning from alarm state

• AlarmHighLimit (real) – High limit value

• AlarmLowLimit (real) – Low limit value

• DecimalPoint (integer) – decimal point precision of Out for roundup during conversion

• DigitalOffLevel (real) – Off state level of Out value for digital transformation, positive level value means greater than, and a negative levle means lower than comparison

• DigitalOnLevel (real) – On state level of Out value for digital transformation, positive level value means greater than, and a negative levle means lower than comparison

• LowCutOffValue (real) – Out value be set to ScaleLowValue whenever the input value is lower than the LowCutOffValue if LowCutOffEnable is enabled, only applicable to current and voltage input type

• Offset (real) – Offset adjustment for input

• ScaleHighValue (real) – Applicable for volatge and current input only

• ScaleLowValue (real) – Applicable for volatge and current input only

• TemperatureTable (option) –

  UI temperature selection from table 1 to 16

  • This temperature table defines the temperature curve table index used for looking up conversion for temperature sensor Input type

  • The controller has built-in 8 default temperature tables (9 to 16) and 8 user defined temperature tables (1 to 8) which are customizable in Virtual Device software (Setting->Temperature Table)

• UIType (option) –

  Sensor type connected to physical point and determines conversion algorithm

  • Voltage, 0-10V

  • Voltage, 0-5V

  • Current, 4mA-20mA

  • Current, 0mA-20mA

  • Resistance

  • Sensor

• UserSetValue (real) – Out equal to UserSetValue when OutofService is true