Example Configuration Of Spm Using Function Block - Emerson Rosemount 3051S Series Reference Manual

Advanced Pressure Diagnostics
October 2016
6.3.9

Example configuration of SPM using Function Block

The following is an example of configuring SPM using one of the Function Blocks within the transmitter.
Figure 6-9
within the Rosemount 3051S Pressure Transmitter being used for control in the field. Note in this
example that "FIT-311" is the tag given to the device when it was commissioned, and "FFPID_RMT5" is
the tag of the Function Block that was automatically assigned by DeltaV.
Figure 6-9. Example of PID Control within a Pressure Transmitter
Using SPM, it is possible to detect problems in the control loop. For example, an increase in the cycling or
oscillation of the control loop could be indicated by an increase in the standard deviation.
If SPM has already been enabled, it must first be disabled before any additional SPM blocks can be
configured. First, set:
SPM_Active = Disabled
Next, to configure SPM2 to monitor the PID control loop, you would set the parameters as shown in
Figure
SPM2_Block_Tag = FFPID_RMT5
SPM2_Block_Type = PID Block
SPM2_Parameter_Index = OUT
80
illustrates an example from DeltaV Control Studio of the PID Function Block (highlighted)
6-10.
Reference Manual
00809-0200-4801, Rev DA
Advanced Pressure Diagnostics