Parameters
Parameter Declaration Data Type Memory Area Description
EN INPUT BOOL I, Q, M, D, L
n Enable
– TRUE: activates the function
– FALSE: deactivates the function
ENO OUTPUT BOOL I, Q, M, D, L
n Status
– TRUE: function executed with error
If the RLO ENO is TRUE, one of the following errors has occurred:
n the input value for the base is less than zero
n a number range overflow occurred during calculation of the function
In the event of an error, the contents of ACCU 1 and 2 remain unchanged.
This function is only used to convert the FB 114 of an existing S5 pro-
gram to a function of an S7 program programmable controller.
15.5 PID Control
15.5.1 FB 41 - CONT_C - Continuous control
FB 41 CONT_C is used to control technical processes with continuous input and output
variables. During parameter assignment, you can activate or deactivate subfunctions of
the PID controller to adapt the controller to the process.
Parameters
Parameter Declaration Data Type Description
COM_RST INPUT BOOL COMPLETE RESTART
n The block has a complete restart routine that is pro-
cessed when the input COM_RST is set.
n Default: FALSE
MAN_ON INPUT BOOL MANUAL VALUE ON
n If the input MAN_ON is set, the control loop is inter-
rupted. A manual value is set as the manipulated
value.
n Default: TRUE
PVPER_ON INPUT BOOL PROCESS VARIABLE PERIPHERY ON
n If the process variable is read from the I/Os, the
input PV_PER must be connected to the I/Os and
the input PVPER_ON must be set.
n Default: FALSE
P_SEL INPUT BOOL PROPORTIONAL ACTION ON
n The PID actions can be activated or deactivated
individually in the PID algorithm. The P action is on
when the input P_SEL is set.
n Default: TRUE
Error information
Description
VIPA SPEED7
Standard
PID Control > FB 41 - CONT_C - Continuous control
HB00 | OPL_SP7 | Operation list | en | 18-30 835
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