6 PID function block (PID controller) PROline Prosonic Flow 93 FOUNDATION Fieldbus
210 Endress+Hauser
MODE_BLK ROUT - RCAS -
CAS - AUTO -
MAN - OOS
Displays the current (Actual) and desired (Target) operating
mode of the PID function block, the permitted modes (Permitted)
supported by the Resource Block and the normal operating
mode (Normal).
Display:
AUTO
MAN
OOS
CAS
RCAS
ROUT
The PID function block supports the following operating modes:
• AUTO (automatic mode):
The setpoint value specified by the user via the SP parameter
is used in the execution of the internal PID algorithm.
• MAN (manual intervention by the operator):
The OUT parameter can be specified directly by the user.
• OOS (out of service):
The block has the status "Out of Service". The PID algorithm of
the block is not executed. The last valid value is output at the
OUT parameter and the status changes to BAD.
• CAS (cascade mode):
Via the input or CAS_IN parameter, the PID function block
receives the setpoint value for internal calculation of the
manipulated variable directly from another function block. The
internal PID algorithm is executed.
• RCAS (remote cascade):
Via the RCAS_IN parameter, the PID function block receives
the setpoint value for internal calculation of the manipulated
variable directly from the fieldbus host system. The internal PID
algorithm is executed.
• ROUT (remote output):
Via the ROUT_IN parameter, the PID function block receives
the actuating value directly from the fieldbus host system. The
manipulated variable is output again via the OUT parameter
without the internal PID algorithm being executed.
PID function block (PID controller) / base index 810
Parameter Write access
with operating
mode
(MODE_BLK)
Description
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