OPPERMANN_PV_MOD_ADX

OPPERMANN_PV_MOD_ADX (FB)

FUNCTION_BLOCK OPPERMANN_PV_MOD_ADX

General

This is a differential pressure - volume flow - transmitter with different measurement ranges:

PV MOD AD1: 0 - 1000 Pa PV MOD AD4: 0 - 4000 Pa

The configuration of the Modbus interface and other parameters is performed via NFC and app when a display is present (variant 1) The configuration of the Modbus interface and other parameters is performed via buttons when a display is present (variant 2)

The measurement value offset can be set in 10 steps using a rotary switch on the device. A manual zero-point adjustment is possible on the device. A terminating resistor (120 Ohm) can be activated / deactivated.

The Modbus interface is parameterized as follows without further settings:

RTU 9600 baud 8 data bits even parity 1 stop bit device address = 1

InOut:

Scope	Name	Type	Initial	Comment
Input	xEn	BOOL	TRUE	Enable / disable communication ( TRUE = enabled )
Input	byUnitId	BYTE	0	Device address (1 .. 127)
Input	xUpdateActual	BOOL	FALSE	Update of actual values (on each rising edge ) (Range: operation)
Input	xResError	BOOL	FALSE	Reinitialization of the output 'eErrorCodeCom' (on each rising edge)
Inout	ModbusClient	ModbusClientBase		Client of the device
Output	rDifPressure	REAL		Differential pressure in Pa
Output	rVolumeFlow	REAL		Volume flow in m3/h
Output	rDevVoltage	REAL		Supply voltage for the device in volts
Output	xSensorOffsetInDevice	BOOL		Indicator whether the calibration of the sensors must be performed in the device (TRUE = calibration in device required, FALSE = calibration in FB required)
Output	xAlarm	BOOL		General fault ( TRUE = fault )
Output	xAlarmCom	BOOL		General fault - communication ( TRUE = fault )
Output	eErrorCodeCom	ModbusErrorCode		Error code - communication ( 0 = no error )
Output	xBusy	BOOL		Communication indicator ( TRUE = communication )
Input Const	tTimeUpdateActual	TIME	TIME#3s0ms	Update interval for operations influenced by the input 'xUpdateActual'