Beckhoff TwinCAT 3 Manual page 32

PLC libraries
Table 12: Inputs
Name Unit
bOn 1
bInit 1
bTune 1
bManual 1
bSelSetpoint 1
bSelCtrlParamet 1
erSet
bEnableSoftStar 1
t
bEnableRampin 1
g
fW1 °C
fW2 °C
fX °C
bOpenThermoc 1
ouple
bReverseTherm 1
ocouple
bBackVoltage 1
bLeakage 1
bShortCircuit 1
bOpenCircuit 1
sControllerPara none
meter
sParaController none
External
sLogData none
32
Value range Description
[TRUE,FALSE] TRUE switches the controller on.
[TRUE,FALSE] Initialisation flag, which must be active (TRUE) for
precisely the first cycle in which the controller is called.
[TRUE,FALSE] A rising edge switches the self-tuning on. If it is switched
to FALSE during the self-tuning process then the self-
tuning is aborted and the controller continues operation
using the old parameters (if they are still present).
[TRUE,FALSE] TRUE switches manual operation on. If the signal goes
FALSE again, the controller returns to automatic mode.
[TRUE,FALSE] Selects one of two possible set values. FALSE selects
the normal set value, while TRUE selects the standby set
value.
[TRUE,FALSE] Selects one of two parameter sets. FALSE causes the
internal (determined) parameter set to be used, while
TRUE switches to one provided externally.
[TRUE,FALSE] The soft start-up process is used if TRUE.
[TRUE,FALSE] TRUE causes each jump in the set value to be converted
to a ramp.
LREAL Set value.
LREAL Standby set value, generally smaller than fW1.
fSelSetpoint can be used to switch between fW1 and
fW2.
LREAL Actual value. This value must be converted to LREAL.
[TRUE,FALSE] The thermocouple is open if TRUE. Must be indicated by
the hardware (e.g. KLxxxx).
[TRUE,FALSE] TRUE indicates that the thermocouple has been
connected with the wrong polarity. Must be indicated by
the hardware.
[TRUE,FALSE] TRUE indicates that the input voltage at the
thermocouple is too high. Must be indicated by the
hardware.
[TRUE,FALSE] TRUE indicates that leakage current has been detected
at the heating element. Must be indicated by the
hardware.
[TRUE,FALSE] TRUE indicates that a short circuit has been detected at
the heating element. Must be indicated by the hardware.
[TRUE,FALSE] TRUE indicates that an open circuit has been detected at
the heating element. Must be indicated by the hardware.
Structure General parameters (sampling rate etc.) are passed to
the block in this structure.
Structure An external controller parameter set is passed to the
block in this structure.
Structure This structure passes parameters for logging to the block
(filenames etc.).
Version: 1.1 TC3 Temperature Controller