Beckhoff TwinCAT 3 User Manual

PLC libraries
ST_ControllerParameter
Table14: Description
Name Unit Value range Description
iMode none INT Controller operating mode (1 = heating, 2 = cooling, 3 =
heating & cooling) (see below)
iReactionOnFail
ure
none INT Parameterisable reaction to errors (see below)
fYTune none LREAL Control value during the self-tuning (normally 100%)
fYStable none LREAL Control value during the settling phase (normally 0%)
dwAlarmSupp none DWORD Masks out the alarms (see below)
tCtrlCycleTime s TIME Controller's sampling time. In the course of the sampling
time the controller re-calculates the control value.
tTaskCycleTime s TIME Task cycle time. The FB is called with this time interval.
fWMin °C LREAL Minimum set value.
fWMax °C LREAL Maximum set value.
fWVeloPos °C/s LREAL Rate of rise (of ramp).
fWVeloNeg °C/s LREAL Rate of fall (of ramp).
fWStartUp °C LREAL Set value at start-up.
tStartUp s TIME Time with the fWStartUp set value.
bStartUpRampin
g
none [TRUE,FALSE] Switches on ramping during the start-up phase.
fWStartUpVeloP
os
°C/s LREAL Rate of rise (of ramp) during the start-up phase.
fWStartUpVeloN
eg
°C/s LREAL Rate of fall (of ramp) during the start-up phase.
fYMin none LREAL Minimum value of the control variable.
fYMax none LREAL Maximum value of the control variable.
fYManual none LREAL Control value in manual operation.
fYOnFailure none LREAL Control value in case of error (parameterisable).
tPWMCycleTim
e
s TIME Cycle time of the PWM signal.
tFilter s TIME Time constant of the actual value filter (first order P-T1
filter)
bFilter none [TRUE,FALSE] The actual value filter is actuated if TRUE.
bEnablePreCont
roller
none [TRUE,FALSE] Switches pre-controller on.
bEnableZones none [TRUE,FALSE] Switches open loop characteristic on until close to set
value.
bEnableCVFilter none [TRUE,FALSE] Switches on control value filter following the main
controller.
iFilterType none ENUM Selection of a filter type for the control value filter
following the main controller (see below)
iControllerType none ENUM Selection of a control algorithm (see below)
TempLow °C LREAL Relative lower temperature limit in the first band.
TempLowLow °C LREAL Relative lower temperature limit in the second band.
TempHigh °C LREAL Relative upper temperature limit in the first band.
TempHighHigh °C LREAL Relative upper temperature limit in the second band.
TempAbsoluteHi
gh
°C LREAL Absolute upper temperature limit.
TempAbsoluteL
ow
°C LREAL Absolute lower temperature limit.
TC3 Temperature Controller 35Version: 1.1

Beckhoff TwinCAT 3 Specifications

General

Platform	Windows
Programming	IEC 61131-3
Runtime	Real-time
Functionality	PLC, Motion Control, CNC, Robotics
Communication	EtherCAT, OPC UA, TCP/IP
Integration	Visual Studio
Hardware compatibility	Beckhoff Industrial PCs
Category	Industrial Automation Software