Siemens 6AV2125-2DB23-0AX0 SIMATIC HMI KTP400 Basic

Name: Siemens 6AV2125-2DB23-0AX0 SIMATIC HMI KTP400 Basic
Brand: Siemens
SKU: 6AV2125-2DB23-0AX0
Price: 543.00 EUR
Availability: InStock

€ 543,00

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SKU: 6AV2125-2DB23-0AX0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens SIMATIC HMI KTP400 Basic (part number 6AV2125-2DB23-0AX0) is a compact key and touch panel belonging to the Basic Panel 2nd Generation family. It features a 4-inch widescreen TFT display and is designed for straightforward visualization tasks in machine-level automation. This panel is part of Siemens' entry-level HMI portfolio, offering a cost-effective solution for basic operator interface requirements.

The KTP400 Basic panel provides a 480 x 272 pixel resolution TFT display capable of rendering 64,000 colors, combined with a resistive touch screen and 4 configurable function keys. It communicates via a PROFINET interface, enabling direct integration with Siemens S7-1200 and S7-1500 PLCs as well as other PROFINET-compatible controllers. The panel is configured using Siemens TIA Portal (WinCC Basic or higher), supports up to 400 tags, and includes 10 MB of user memory for project data.

The KTP400 Basic is widely deployed in packaging machinery, conveyor systems, small manufacturing cells, and building automation equipment where a compact, reliable operator panel is required. Its slim form factor and standard panel cutout dimensions make it suitable for integration into control cabinets and machine doors with limited space. The PROFINET connectivity and TIA Portal engineering environment ensure seamless integration into modern Siemens-based automation architectures.

Technical Specifications

Display Size	4 inch (widescreen)
Display Resolution	480 x 272 px
Display Colors	64,000 colors
Display Type	TFT
Touch Technology	Resistive touch screen
Function Keys	4 configurable function keys
Communication Interface	PROFINET (RJ45)
User Memory	10 MB
Number of Tags	400
Input/Operating Voltage	24 V DC
Power Consumption	4.5 W (typical)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Dimensions (W x H x D)	137 x 101 x 38 mm
Panel Cutout	122 x 86 mm
Certifications	CE, UL, cULus
Engineering Software	TIA Portal WinCC Basic V13 SP1 or higher

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the configured PLC. The connection to the controller has been lost or cannot be established.
Check PROFINET cable and RJ45 connector integrity. Verify IP address configuration on both the panel and PLC. Confirm the PLC is in RUN mode and the project configuration matches the hardware setup.
Event ID: 10001: Connection to the PLC was interrupted during runtime operation.
Inspect the PROFINET network for cable faults or switch failures. Verify PLC is powered and operational. Re-download the HMI project if the issue persists after network checks.
Event ID: 20000: Project download error. The project could not be transferred to the panel successfully.
Ensure the engineering PC and panel are on the same network subnet. Check firewall settings on the engineering PC. Retry the download via TIA Portal and verify the panel is in transfer mode.
Event ID: 40000: Internal device error or hardware fault detected on the panel.
Perform a panel reset to factory defaults. If the error persists, the panel hardware may require service or replacement.
Event ID: 70000: Insufficient memory available for the current project. User memory limit has been reached or exceeded.
Reduce the project size by removing unused screens, tags, or graphics. Optimize image resources and re-download the project to the panel.
Event ID: 50000: Tag update error. One or more configured tags could not be read from or written to the PLC.
Verify that the tag addresses in the HMI project match the actual PLC data block or memory addresses. Check PLC program for address conflicts and re-download the HMI project.
Event ID: 30000: System time synchronization error. The panel could not synchronize its clock with the configured time source.
Check the time synchronization settings in TIA Portal. Verify that the PLC or NTP server used for time sync is accessible and correctly configured.

Frequently Asked Questions

Which PLCs are compatible with the KTP400 Basic 6AV2125-2DB23-0AX0?

The KTP400 Basic is primarily designed for use with Siemens S7-1200 and S7-1500 PLCs via PROFINET. It can also communicate with S7-300 and S7-400 controllers using appropriate PROFINET configurations within TIA Portal.

What software is required to configure and program this panel?

The panel is configured using Siemens TIA Portal with WinCC Basic (V13 SP1 or higher). WinCC Basic is included with TIA Portal and supports the full feature set of the Basic Panel 2nd Generation family.

Does the KTP400 Basic support data logging or recipe management?

The KTP400 Basic has limited support for recipes and data logging compared to higher-tier Comfort Panels. Basic recipe functionality is available, but advanced data logging and trending features require a Comfort or Advanced Panel.

What is the front panel protection rating of this HMI?

The front face of the KTP400 Basic carries an IP65 protection rating, making it suitable for installation in environments where dust and water jets may be present. The rear of the panel is rated IP20.

Can the panel firmware be updated in the field?

Yes, firmware updates can be performed via TIA Portal or using a USB connection with a suitable update package from Siemens. It is recommended to back up the existing project before performing any firmware update.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel power connector. Verify polarity is correct and voltage is within the 20.4–28.8 V DC acceptable range.

Correct any wiring errors or supply voltage issues. If the supply voltage is correct and the display remains blank, the internal power supply or backlight may have failed and the panel should be sent for repair or replacement.

Touchscreen does not respond or responds inaccurately

Check whether the function keys still respond, which would indicate the processor is running but the touch layer has failed. Inspect the screen surface for physical damage or contamination.

Clean the screen surface with a soft, dry cloth. Perform a touchscreen recalibration through the panel's Start Center settings menu. If inaccuracy persists, the resistive touch layer may be worn or damaged and require panel servicing.

Panel cannot establish communication with the PLC

Verify the PROFINET IP address assigned to the panel matches the address configured in the TIA Portal project. Use a network scanner or ping test to confirm network connectivity between the panel and PLC.

Correct IP address mismatches in TIA Portal and re-download the project. Replace the PROFINET cable if physical layer faults are detected. Ensure the PLC is in RUN mode and the PROFINET device name is correctly assigned.

Project download from TIA Portal fails or times out

Confirm the engineering PC and the HMI panel are on the same IP subnet. Check that the panel is in Transfer mode (accessible via the Start Center). Verify no firewall or antivirus software is blocking the TIA Portal communication port.

Set the panel to Transfer mode manually via the Start Center. Disable any firewall rules blocking TIA Portal on the engineering PC. If the issue persists, perform a factory reset on the panel and retry the download.

Panel repeatedly reboots or freezes during operation

Check the 24 V DC supply for voltage dips or ripple using an oscilloscope or multimeter. Inspect the project for memory overuse or excessively complex screen animations that may overload the processor.

Stabilize the power supply and ensure it is adequately rated for the panel load. Optimize the HMI project by reducing screen complexity and the number of simultaneous tag updates. If reboots continue with a minimal project, the panel hardware may require replacement.

Condition	Repair, Used, Refurbished, New in box (sealed)