Siemens 6AG1123-2GB03-2AX0 — Product Specifications, Introduction, Applications, Advantages, and Related Models

1. Product Overview

The Siemens 6AG1123-2GB03-2AX0 is an industrial human-machine interface (HMI) from the SIPLUS product range. It is associated with the KTP700 Basic PN operator panel platform and is designed to provide a visual interface between machine operators and industrial automation systems.

A human-machine interface allows operators to monitor machine conditions, view process values, acknowledge alarms, enter operating parameters, and execute authorized commands. By presenting essential operating information on a single screen, an HMI can make routine machine operation easier to understand and manage.

The 6AG1123-2GB03-2AX0 belongs to the 7-inch operator-panel class. Its compact format makes it relevant to machinery and control cabinets where a local visualization interface is required without installing a larger industrial computer.

The SIPLUS designation is an important part of the product identification. SIPLUS models are designed for specified environmental conditions that may differ from those of standard automation products. The exact environmental limits, protective coating, and permissible operating conditions must be established from the complete order number.

The model is particularly worth evaluating for applications that require a compact HMI with a PROFINET communication interface. However, the precise hardware configuration and compatibility should be confirmed before the product is specified as a direct replacement for an existing panel.

2. Basic Product Information

Product identification note: The model number indicates a SIPLUS product in the KTP700 Basic PN class. It should not be confused with the PROFIBUS DP version, which uses a different communication interface. Mechanical dimensions, net weight, environmental limits, and other order-specific details should be confirmed before procurement.

3. Detailed Technical Parameters

3.1 Display and Hardware Parameters

The two listed weight figures should be distinguished when preparing purchasing or engineering documentation. The technical specification lists 0.780 kg without packaging, while the catalog lists a net weight of 0.977 kg. For preliminary mechanical calculations, use the device-specific mechanical specification and confirm the actual revision before finalizing the design.

3.2 Electrical Parameters

The panel should be installed with a stable industrial power supply and suitable circuit protection. The power source must be selected according to the actual current requirements of the device and the other equipment connected to the same supply.

3.3 Communication and Software Parameters

The PROFINET interface is a key feature of this model. It allows the HMI to communicate with compatible automation equipment through an Ethernet-based industrial network.

A PROFINET connection does not automatically guarantee compatibility with every PLC or third-party controller. The supported protocol, engineering software, firmware, network configuration, and application requirements must all be considered.

3.4 Environmental and Mechanical Parameters

The conformal coating and extended specified operating temperature make this model worth considering for selected industrial environments. However, the coating does not mean that the panel can be exposed without restriction to water, aggressive chemicals, or condensation.

The IP65 rating applies to the front under the specified installation conditions. The complete enclosure and cable-entry arrangement must be designed to meet the protection requirements of the installation.

4. Product Introduction

The Siemens 6AG1123-2GB03-2AX0 is a 7-inch industrial operator panel designed to provide a clear and practical interface between personnel and automated machinery.

In an automated production system, the PLC executes the control program and processes signals from sensors, actuators, and other equipment. The HMI provides the operator with a way to view information and interact with the control system without directly accessing the PLC program.

The KTP700 Basic PN combines a color TFT display, touchscreen input, physical function keys, and a PROFINET interface. It is designed for applications where operators need to monitor machine status, enter operating parameters, acknowledge alarms, and access configured functions from a local panel.

The SIPLUS configuration adds a conformal coating and a specified operating temperature range of -20°C to +50°C. These characteristics can be relevant to industrial installations with more demanding environmental requirements than those found in conventional indoor control cabinets.

The device can be used as part of a broader automation system, but its actual functionality depends on the PLC program, the HMI engineering project, and the communication configuration.

4.1 Display and Operator Interaction

The 7-inch display provides an area for machine controls, numerical values, status indicators, alarm messages, and basic graphical representations.

The touchscreen supports flexible screen navigation and data entry. The eight physical function keys can be assigned to commonly used commands, depending on the HMI project design.

This arrangement can be useful for applications where operators need a straightforward interface rather than a full industrial computer.

4.2 PROFINET Communication

PROFINET communication is one of the main selection criteria for this model.

It is relevant to automation systems that use Ethernet-based industrial communication between compatible controllers and operator panels. Depending on the engineering configuration, the HMI can display process data and send operator-entered values to the PLC.

For an existing machine, the network configuration and HMI project should be reviewed before a replacement panel is selected.

4.3 SIPLUS Environmental Design

The SIPLUS version is designed for specified environmental conditions and incorporates a conformal coating.

This can provide an additional protective measure for electronic assemblies in applications where temperature variation or certain environmental exposures are relevant.

The actual suitability of the panel depends on the installation environment. Cabinet temperature, humidity, condensation, dust, vibration, chemical exposure, and enclosure protection should all be considered.

5. Product Applications

5.1 Manufacturing and Assembly Machinery

The panel can serve as the local operator interface for assembly machines, production equipment, and general-purpose manufacturing systems.

Typical functions include:

• Machine start and stop commands.

• Operating-mode selection.

• Production counter display.

• Process-value monitoring.

• Alarm acknowledgment.

• Parameter entry.

• Maintenance and diagnostic screens.

These functions can be configured according to the machine’s control program and operating requirements.

5.2 Packaging and Filling Equipment

Packaging and filling machines often require recipe selection, target-value entry, production monitoring, and fault management.

The KTP700 Basic PN can present these functions through a set of configured operating screens. Operators can use the interface to view production status, adjust authorized settings, and respond to alarm messages.

The actual number of screens and available functions depends on the engineering project.

5.3 Conveyor and Material-Handling Systems

In conveyor systems, the HMI can display equipment status, motor operating conditions, production counts, and fault information.

Operators can use the panel to select operating modes and execute permitted commands. The PLC remains responsible for sequencing, interlocks, and machine-control logic.

PROFINET can provide a convenient communication path where the controller and other network equipment support the same architecture.

5.4 Pumping and Water-Process Equipment

For pumping stations and process equipment, the HMI can display values such as tank level, pressure, temperature, pump status, and alarm conditions when these values are available from the control system.

The panel can also provide operator access to authorized process parameters and maintenance information.

The HMI should not be treated as a replacement for independent protection systems, safety equipment, or the control logic required for safe operation.

5.5 Industrial Equipment in Variable Temperature Conditions

The specified operating range of -20°C to +50°C may make the SIPLUS version suitable for selected installations with wider ambient temperature variation.

The actual temperature at the panel location must be assessed, especially where drives, power supplies, and other heat-generating devices are installed inside the same cabinet.

The conformal coating should be regarded as one part of the product’s environmental design, not as a guarantee of suitability for every harsh industrial environment.

6. Product Advantages

6.1 Compact Design and Practical Installation

The 7-inch format provides a useful balance between screen space and installation size.

The front dimensions of approximately 214 × 158 mm allow the panel to be integrated into many machine-control cabinet designs. The final cutout and mounting clearance must follow the mechanical specifications of the exact product.

6.2 Color Visualization

The 800 × 480 pixel display supports 65,536 colors, making it possible to distinguish operating states, alarms, machine modes, and process values through a consistent visual layout.

A well-designed interface can help operators recognize abnormal conditions more quickly and reduce the time spent navigating between screens.

6.3 Touchscreen and Physical Function Keys

The combination of a touchscreen and eight physical function keys provides flexibility when designing the operator interface.

Frequently used commands can be assigned to physical keys, while more detailed functions can be accessed through screen controls. This can be useful for repetitive machine-operation tasks.

6.4 PROFINET Integration

The PROFINET interface makes the model relevant to modern Ethernet-based automation systems.

For compatible installations, the HMI can exchange data with a PLC through a configured industrial network. This can simplify the integration of operator controls and machine-status information into the overall control architecture.

6.5 Environmental Protection Features

The SIPLUS configuration incorporates conformal coating and specifies an operating temperature range of -20°C to +50°C.

These characteristics can be useful in selected installations where the environmental requirements justify choosing a SIPLUS model instead of a standard HMI.

6.6 Support for Operator Monitoring

An HMI can centralize operating information that would otherwise be distributed across separate indicators, meters, and control devices.

With an appropriately designed project, operators can view machine status, process values, alarm messages, production counts, and maintenance information from a single interface.

6.7 Potential Reduction in System Complexity

For basic and medium-complexity machinery, an integrated operator panel can provide the necessary visualization without requiring a separate industrial computer.

The actual cost and maintenance benefits depend on the complexity of the application, engineering requirements, installation costs, and spare-parts strategy.

7. Product Series and Family Classification

The product series identifies the broader family, while the complete order number identifies the specific hardware and environmental configuration.

When selecting related products, it is important to distinguish between display size, communication interface, environmental specification, and hardware generation. These characteristics can affect compatibility even when two panels appear similar.

8. Five Recommended Models From the Same Series or Related Families

The following five models are useful candidates for comparing display size, communication requirements, and environmental configuration.

The model numbers should be checked against the intended hardware variant before purchasing. Where an exact mechanical figure cannot be confidently established, it is marked for verification rather than estimated.

8.1 Related Model Comparison Table

*The target model’s technical specification lists a device weight of 0.780 kg, while the catalog-listed net weight is 0.977 kg. The exact weights and dimensions of other variants should be confirmed from their respective technical specifications. The KTP900 and KTP400 designations above are comparison candidates, not a guarantee that the complete order numbers are interchangeable.

8.2 Model 1: 6AG1123-2DB03-2AX0 — KTP400 Basic DP

The KTP400 Basic DP class is worth considering when installation space is limited and the operator interface requires only a small number of screens.

Its compact format can be suitable for auxiliary machinery, simple production stations, and equipment with relatively straightforward operating procedures.

The main limitation is the smaller display area. Detailed alarm lists, complex process diagrams, and extensive parameter screens may be less convenient to use.

8.3 Model 2: 6AG1123-2GA03-2AX0 — KTP700 Basic DP

The KTP700 Basic DP is a closely related 7-inch SIPLUS operator panel with a PROFIBUS DP interface.

It is worth considering when the existing automation system uses PROFIBUS DP and the environmental characteristics of the SIPLUS version are appropriate for the installation.

Its main difference from the target model is the communication interface. The DP and PN versions should be selected according to the PLC network rather than screen size alone.

8.4 Model 3: 6AG1123-2GB03-2AX0 — KTP700 Basic Color PN

This is the target model.

It combines a 7-inch color display, touchscreen input, eight physical function keys, PROFINET communication, and a SIPLUS environmental configuration.

It is a practical candidate for compatible Ethernet-based automation systems that need a compact local operator interface.

8.5 Model 4: 6AG1123-2JB03-2AX0 — KTP900 Basic Variant

A 9-inch HMI class can provide more space for operating controls, process values, and alarm information.

It may be useful when operators need to view more information on each screen or when the application requires a more extensive interface.

The precise communication interface and hardware specification should be confirmed before this model is considered for a particular project.

8.6 Model 5: 6AG1123-2MA03-2AX0 — KTP1200 Basic DP

The KTP1200 Basic DP offers a larger display class for applications requiring more extensive visualization.

It can be considered for machinery with multiple operating modes, detailed process screens, and more complex parameter-entry requirements.

The larger display increases the installation footprint, so the cabinet cutout, rear clearance, communication requirements, and engineering compatibility should be checked before selection.

9. Five Additional Siemens Models Worth Considering

The following models provide alternatives across the standard SIMATIC HMI Basic Panel family. They are particularly useful when the project does not necessarily require the SIPLUS environmental configuration.

*Approximate dimensions indicate the corresponding display class and should not replace the exact mechanical drawing. The precise communication interface, hardware generation, and device weight must be confirmed for each order number.

9.1 KTP400 Basic

The KTP400 Basic is suitable for compact operator stations where a limited number of controls and status indicators are sufficient.

Its small display helps reduce installation space, although it provides less room for complex process visualization.

9.2 KTP700 Basic DP

The KTP700 Basic DP is relevant to systems that require PROFIBUS DP communication.

It is a candidate for existing machines that need a compatible standard HMI and do not require the specific SIPLUS environmental configuration.

9.3 KTP700 Basic PN

The KTP700 Basic PN is the standard hardware reference for the target model.

It is relevant to applications using compatible PROFINET networks where the standard environmental specification is sufficient.

9.4 KTP900 Basic

The KTP900 Basic class provides a larger screen for applications that require more visualization space.

It can be considered for equipment with more operating parameters, additional alarm information, or more elaborate screen layouts.

9.5 KTP1200 Basic

The KTP1200 Basic class is intended for applications that benefit from a larger operator interface.

It may be suitable for more extensive machine-control screens, but the exact model variant and engineering compatibility should be confirmed before purchase.

10. Comparison Between the SIPLUS and Standard KTP700 Basic PN Models

The standard and SIPLUS models share the same general KTP700 Basic PN platform, but they should not be assumed to have identical environmental capabilities.

For applications with ordinary indoor installation conditions, the standard variant may be sufficient. Where the specified SIPLUS temperature range and protective configuration are needed, the SIPLUS model may be more appropriate.

11. Installation and Engineering Considerations

11.1 Mechanical Installation

The target model has a front-panel size of 214 × 158 mm, a mounting cutout of approximately 198 × 142 mm, and a depth of 39 mm.

The final cabinet design should account for mounting clearance, cable connections, access for maintenance, ventilation, and the mechanical requirements of the exact device revision.

11.2 Power Supply

The nominal supply voltage is 24 V DC.

The power supply should be selected according to the device’s actual electrical requirements and the total load connected to the same circuit. Suitable circuit protection and grounding should be incorporated into the installation.

11.3 PROFINET Configuration

Before installation, confirm that the PLC supports the required communication configuration.

The network should be designed with appropriate addressing, cabling, connectors, and industrial Ethernet practices. The HMI project must also be configured to communicate with the correct controller and process data.

11.4 Engineering Software

Check the engineering software version, device configuration, firmware compatibility, and availability of the original HMI project before carrying out a replacement.

A panel with a similar display and appearance may still require engineering changes if its hardware identifier or supported software differs.

11.5 Environmental Suitability

The specified operating temperature is -20°C to +50°C.

The actual temperature at the mounting position should be assessed, especially where other heat-generating equipment is installed in the same cabinet.

Humidity, condensation, dust, chemical exposure, and vibration should also be considered. The conformal coating does not remove the need for suitable enclosure protection.

12. Product Selection Recommendations

13. Final Product Assessment

The Siemens 6AG1123-2GB03-2AX0 is a SIPLUS KTP700 Basic Color PN operator panel designed for industrial visualization and local machine control.

Its main features include a 7-inch TFT color display, 800 × 480 resolution, 65,536 colors, touchscreen operation, eight physical function keys, a PROFINET interface, conformal coating, and a specified operating temperature range of -20°C to +50°C.

The front-panel dimensions are 214 × 158 mm, the mounting cutout is approximately 198 × 142 mm, and the overall depth is 39 mm. The technical specification lists a device weight of 0.780 kg, while the catalog-listed net weight is 0.977 kg. These figures should be distinguished when preparing mechanical drawings and purchasing records.

The KTP400, KTP700 DP, KTP900, and KTP1200 product classes provide alternatives for different display sizes and communication requirements. The standard KTP700 Basic PN is another option when the SIPLUS environmental configuration is not required.

For direct replacement, the complete order number remains the most reliable starting point. For a new installation, the selection should be based on communication compatibility, display requirements, environmental conditions, mechanical dimensions, and engineering software support.

Final procurement checklist:

• Confirm the complete model number and hardware revision.

• Verify the communication interface and PLC compatibility.

• Confirm the operating temperature and environmental requirements.

• Check the panel cutout and mounting depth.

• Distinguish device weight from catalog-listed net weight.

• Verify electrical requirements and engineering software compatibility.

• Confirm replacement suitability before finalizing the purchase.

These checks help ensure that the selected HMI matches the intended application and avoids unnecessary changes to the control system.