MP_EV

This function block is used to control a control ball valve of series P6..W..EV-BAC. For more information please visit www.belimo.com.

MP_Address is used to specify the MP-Bus device with which the function block is to communicate. bStart activates communication with the MP-Bus device. bBusy indicates that the function block is active. If bStart remains TRUE, the device is addressed cyclically with a period specified by the time in TMPolling. The time should be set longer than 1 s. bError is used to indicate an error in communication with the actuator. The type of the error can be read with iErrorId.

Inputs

VAR_INPUT
  MP_Address       : USINT := 1;
  bStart           : BOOL := TRUE;
  strDataKL6771    : DataKL6771;
  TMpolling        : TIME := t#10s;
  nOverrideControl : E_MPBus_Override := MPBus_Override_Auto;
  nRelSetpoint     : INT;
END_VAR

Name	Type	Description
MP_Address	USINT	MP-Bus address of the slave.
bStart	BOOL	A positive edge starts the function block. If this remains continuously TRUE, the function block will be activated cyclically with a period specified by the time in TMPolling.
strDataKL6771	DataKL6771	The data structure with which the KL6771() function block must be linked.
TMpolling	TIME	The time for which the function block should address the actuator. Default 10 s, minimum time 1 s.
nOverrideControl	E_MPBus_Override	nOverrideControl: The relative setpoint nRelSetpoint is ignored in override mode. Overriding is disabled if the command is not repeated within 120 minutes.
nRelSetpoint	INT	The setpoint is interpreted either as position setpoint or as advance setpoint.

Outputs

VAR_OUTPUT
  bBusy                         : BOOL;
  bError                        : BOOL;
  iErrorId                      : MP_Error;
  nAbsPos                       : INT;
  rT1_SI                        : REAL;
  rT2_SI                        : REAL;
  rDELTA_T                      : REAL;
  rP_SI                         : REAL;
  nE_COOLING_SI                 : DINT;
  nE_HEATING_SI                 : DINT;
  nRelFlow                      : INT;
  rAbsFlow_SI                   : REAL;
  nRelPos                       : INT;
  nRelSetPointRead              : INT;
  bErrorStateT1                 : BOOL;
  bErrorStateT2                 : BOOL;
  bErrorStateFlowSensorErr      : BOOL;
  bErrorStateMechanicalOverload : BOOL;
  st_StateEV                    : St_StateEV;
  bPositionSetByHand            : BOOL;
END_VAR

Name	Type	Description
bBusy	BOOL	This bit is set for as long as the function block is active.
bError	BOOL	This output goes TRUE as soon as an error occurs. This error is described via the iErrorId variable.
iErrorId	MP_ERROR	This output outputs an error code in the event of an error. bError goes TRUE at the same time.
nAbsPos	INT	Absolute position in °
rT1_SI	REAL	Temperature 1 (remote) in °C
rT2_SI	REAL	Temperature 2 (embedded) in °C
rDELTA_T	REAL	Delta temperature in °C
rP_SI	REAL	Energy in kW
nE_COOLING_SI	DINT	Cooling energy in kWh
nE_HEATING_SI	DINT	Heating energy in kWh
nRelFlow	INT	Relative flow rate in %
rAbsFlow_SI	REAL	Absolute flow rate in l/min
nRelPos	INT	Relative position in %
nRelSetPointRead	INT	The setpoint is interpreted either as position setpoint or as advance setpoint (relative to Vmax) in %.
bErrorStateT1	BOOL	Error temperature sensor T1
bErrorStateT2	BOOL	Error temperature sensor T2.
bErrorStateFlowSensorErr	BOOL	Flow sensor is faulty.
bErrorStateMechanicalOverload	BOOL	Mechanical overload detected.
st_StateEV	St_StateEV	Only devices from 27 March 2014
bPositionSetByHand	BOOL	The actuator position was changed manually.

Requirements

Development environment	required TC3 PLC library
TwinCAT from v3.1.4020.14	Tc2_MPBus from 3.3.5.0