Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller CUSTOMIZATION GUIDE - Manual (Page 107)

5: Enter the function block input values and parameters into the database. The methods for entering
parameters are described in IB53MC5000 section 3.4.2.
In this example:
STEP 0 is F-CIM 86 because use of a remote setpoint is planned. The setpoint generator F-CIM 044
can only accept as its remote setpoint input the output from the previous step (S
n-1 ). F-CIM 86 reads
output from AI 1 and provides it as the setpoint input to F-CIM 044.
STEP 1 is F-CIM 44, the setpoint generator, also receives as input:
• A = the remote setpoint enable from DI 0 [L000]
• B = setpoint track input AI 0, allowing the setpoint to track the PV in manual
• C = setpoint track switch
The step output is the setpoint, which in turn, is an input to the next module.
STEP 2 is F-CIM 47, Deviation/Alarm Calculation. In addition to the setpoint from the previous step
this module receives as input:
• A= the measured process variable from AI 0 [H000].
This module determines the deviation between the setpoint and the process variable. This deviation
is the output of this step and becomes the input to F-CIM 041.
STEP 3 is F-CIM 041, a PID controller. In addition to the deviation it receives as its input:
• B = reset feedback originating as the output from the auto/manual switch.
• C = control track command which is the auto status output from the auto/manual
switch [L107].
The output from the PID module is the control output [C123]. This is an input for the auto/manual
switch.
STEP 4 is F-CIM 043, the auto/manual switch. In addition to control output from the PID controller,
this receives as input:
• A = is set to a fixed constant = 1, allowing the auto/manual pushbutton to control
the auto/manual switch
• B = output track value from AI 2 [H002]
• C = output track switch from DI 1 [L001]
• The S
n
output of the auto/manual switch is the output which will be read by the next
step.
STEP 5 is F-CIM 087, the write module. This copies the result of the previous step to A which is data
base parameter C00. This output drives the final control element
STEP 6 is F-CIM 022, display handler, which allows changing displays using the pushbuttons on the
front of the controller. If F-CIM 022 is used, it should always be the last step.
Refer to Figure 3-4 for an F-CIM Overview, and Figure 3-5 for a Database Modules Overview.
MODULAR CONTROLLER CUSTOMIZATION GUIDE
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