Configuring Parameter Visibility in the PCS 7 Technological List Editor vs Process Object View

In SIMATIC PCS 7, the Technological List Editor displays only parameters, signals, and messages that are explicitly configured as 'Technological I/Os' within a Control Module Type (CMT) or Equipment Module Type (EMT). If technological parameters of a valve block (such as BatchID or Name inputs) do not appear under the Parameters tab of the Technological List Editor, it is because they have not been added to the technological interface of that CMT. To make them visible: open the Control Module Type in the Master Data Library, drag the desired block pins into the 'Technological I/Os' container, and synchronize the CMT instances. For bulk configuration of arbitrary, non-technological block pins, use Process Object View (POV) instead.

Executive Summary

With the introduction of technological engineering in SIMATIC PCS 7 V8.1 and V9.x, Siemens provides two powerful tabular engineering interfaces: the classic Process Object View (POV) and the modern Technological List Editor. Engineers transitioning to Control Module Types (CMT) frequently open the Technological List Editor expecting to see all internal pins of technological blocks (such as VlvL.BatchID, VlvL.BatchEn, or auxiliary limits), only to find the parameter list completely empty or restricted to a few basic setpoints. This creates confusion regarding the purpose of the Technological List Editor versus Process Object View. This article delineates the architectural boundary between technological declarations and raw function block parameters, detailing how to expose parameters in the Technological List Editor and when to rely on Process Object View.

Architecture and Fundamental Mechanics

Technological Engineering, Control Module Types (CMT), and Editor Data Scope Mechanics:

Scope and Philosophy of the Technological List Editor:
The Technological List Editor is part of the Technological Engineering toolset introduced with Control Module Types (CMT) and Equipment Module Types (EMT).
It is intentionally decoupled from raw, low-level CFC block pins.
In a CMT, an engineer defines a clean, abstracted interface called Technological I/Os (represented by green parameter icons in the technological editor pane).
The Technological List Editor displays ONLY items assigned to this technological interface. If a block pin (e.g. BatchID) exists inside the CFC chart but was never dragged into the Technological I/Os interface, the Technological List Editor treats it as an internal, private variable and hides it entirely.
Scope and Purpose of Process Object View (POV):
Process Object View is the classic, comprehensive DCS engineering spreadsheet in SIMATIC Manager.
POV scans ALL CFC charts, blocks, and parameters across the entire plant hierarchy regardless of whether CMTs are utilized.
It exposes every input, output, and static parameter declared on any block (including BatchID, OccupiedBy, Feature bits, etc.).
POV is intended for raw DCS bulk engineering, I/O channel address binding, and classical library parameter tuning.
Why Expose Parameters via CMT Technological I/Os?
Standardization: Restricting the Technological List Editor to declared technological I/Os ensures that junior engineers or external tools (like Plant Automation Accelerator - PAA, COMOS, or SIMIT) only interact with validated, standardized variables.
Type-Instance Synchronization: When a parameter is part of a CMT's Technological I/Os, updating its value or structure in the master library propagates deterministically to all instances without breaking unique instance configurations.

Step-by-Step Implementation Procedure

Open the Master Data Library and Locate the Control Module Type (CMT):
* In SIMATIC Manager, switch to Component View.
* Navigate to the project's Master Data Library -> Charts folder.
* Open the target Control Module Type (e.g. CMT_Valve).
Access the Technological Editor Pane:
* In the CFC editor for the CMT, click the Technological View icon on the toolbar (or select View -> Technological View).
* The left pane splits to reveal the technological tree structure: Technological I/Os, Parameters, Signals, Messages.
Assign Block Pins to Technological Parameters:
* In the CFC chart, locate the valve block instance (e.g. VlvL).
* Click on the desired parameter pin (e.g. BatchID or Name).
* Drag and drop the pin directly into the Parameters container in the Technological I/Os tree.
* Assign a standardized technological identifier (e.g. Batch_Identifier) and configure its default value.
* The parameter icon turns green, confirming its status as a formal technological assignment.
Synchronize CMT Master Types to Plant Instances:
* In SIMATIC Manager Plant View, right-click the master library Charts folder -> Plant Types -> Synchronize....
* Execute synchronization to propagate the newly assigned technological parameter to all valve instances across the plant.
View and Edit in the Technological List Editor:
* In SIMATIC Manager, select the plant hierarchy folder.
* Select Options -> Technological List Editor (or open from Plant View).
* Click the Parameters tab; verify that the valve parameters (BatchID, etc.) are now fully visible and editable in tabular format.

Verification

Open the Technological List Editor in SIMATIC Manager.
Switch to the Parameters tab; verify that every valve instance now lists the newly added technological parameters.
Modify the value of BatchID on one instance directly in the table; click Save.
Open the corresponding CFC chart instance; confirm that the block input pin reflects the new value modified in the list editor.

Limitations and Operational Precautions

Adding excessive block pins to a CMT's Technological I/Os increases database complexity and lengthens type-instance synchronization times. Only expose variables that require instance-specific parameterization or data exchange with higher-level systems (MES, PAA, SIMIT). For one-off adjustments on non-standardized charts, rely on Process Object View rather than altering master CMT definitions.

Engineer FAQ

Why are some block parameters missing in the Technological List Editor?

Because only parameters explicitly assigned as 'Technological I/Os' within a Control Module Type (CMT) appear in the Technological List Editor.

What is the difference between Process Object View and Technological List Editor?

Process Object View displays all parameters of all blocks unconditionally, whereas the Technological List Editor displays only standardized technological interface assignments.

How do I make a block pin appear in the Technological List Editor?

Open the CMT in the Master Data Library, open Technological View, and drag the pin into the 'Parameters' folder of Technological I/Os.

Do I have to re-synchronize CMT instances after adding a parameter?

Yes, running 'Plant Types -> Synchronize' is mandatory to propagate the new technological I/O to all chart instances in the plant.

Can I configure signals (I/O addresses) in the Technological List Editor?

Yes, dragging channel driver I/O pins into the 'Signals' folder exposes them for bulk hardware address assignment in the Signals tab.

Technical References

Technological List Editor

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Configuring Parameter Visibility in the PCS 7 Technological List Editor vs Process Object View