The setpoint is entered at input SP_INT in floating-point format as a physical value or per-
centage. The setpoint and process value used to form the error must have the same unit.
Depending on PVPER_ON, the process value can be acquired in the peripheral (I/O) or
floating-point format.
PVPER_ON Process Value Input
TRUE The process value is read in via the analog peripheral I/Os (PIW
xxx) at input PV_PER.
FALSE The process value is acquired in floating-point format at input
PV_IN.
The CRP_IN function converts the peripheral value PV_PER to a floating-point format
depending on the switch PER_MODE according to the following rules:
PER_MODE Output of CRP_IN Analog Input Type Unit
0 PV_PER * 0.1 Thermoelements; PT100/
NI100; standard
°C; °F
1 PV_PER * 0.01 PT100/NI100; climate °C; °F
2 PV_PER * 100/27648 Voltage/current %
The PV_NORM function calculates the output of CRP_IN according to the following rule:
Output of PV_NORM = Output of CPR_IN * PV_FAC + PV_OFFS
Setpoint Branch
Process Value Options
(PVPER_ON)
Process Value Format
Conversion CRP_IN
(PER_MODE)
Process Value Normaliza-
tion PV_NORM (PF_FAC,
PV_OFFS)
VIPA SPEED7
Standard
PID Control > FB 59 - TCONT_S - Temperature Step Control
HB00 | OPL_SP7 | Operation list | en | 18-30 875
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