Siemens 6AV6646-1BC24-0AA1 SIMATIC KTP400 Basic

Name: Siemens 6AV6646-1BC24-0AA1 SIMATIC KTP400 Basic
Brand: Siemens
SKU: 6AV6646-1BC24-0AA1
Price: 1075.00 EUR
Availability: InStock

€ 1.075,00

Condition

Clear

SKU: 6AV6646-1BC24-0AA1 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6646-1BC24-0AA1 is a SIMATIC KTP400 Basic panel, part of the SIMATIC Basic Panel series from Siemens. It is a compact 4-inch key and touch-operated HMI panel designed for straightforward visualization and operator control tasks. This unit provides a cost-effective entry-level HMI solution within the Siemens SIMATIC portfolio, suitable for machines requiring simple process monitoring and control.

The KTP400 Basic features a 4-inch TFT widescreen display with a resolution of 480 x 272 pixels and 64,000 color support, combined with 4 configurable function keys for direct operator input. It communicates via a PROFINET interface, enabling seamless integration with Siemens S7-1200 and S7-1500 PLCs as well as other PROFINET-compatible controllers. The panel is configured using Siemens WinCC Basic or TIA Portal software, supports a 10 MB user memory for project data, and operates on a 24 V DC supply. The housing is rated IP65 on the front face, providing protection against dust and water ingress in industrial environments.

The SIMATIC KTP400 Basic is widely deployed in small to medium-scale machine automation, packaging equipment, conveyor systems, and building automation applications. Its compact form factor makes it suitable for installation in confined control cabinet doors or machine panels where space is limited. The combination of touch and key operation provides flexibility for operators working in environments where gloved-hand operation is required.

Technical Specifications

Display Size	4 inch
Display Resolution	480 x 272 pixels
Display Colors	64,000 colors (TFT)
Touch Technology	Resistive touch + 4 function keys
Input/Operating Voltage	24 V DC
Power Consumption	4.5 W (typical)
Communication Interface	PROFINET (RJ45)
User Memory	10 MB
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
Mounting	Panel mounting
Certifications	CE, UL, cULus
Configuration Software	TIA Portal / WinCC Basic V13 or higher

Common Error Codes & System Events

Event ID: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been lost.
Check PROFINET cable and RJ45 connector integrity. Verify PLC IP address matches the HMI project configuration. Ensure the PLC is in RUN mode and the network switch or direct link is functioning correctly.
Event ID: 10001: Connection to the PLC was interrupted during runtime operation.
Check physical network connection and cable. Verify PLC is powered and running. Review PROFINET device name and IP address settings in TIA Portal for consistency.
Event ID: 20000: Project download error. The project could not be transferred to the HMI panel successfully.
Ensure the HMI panel is in transfer mode. Verify the PC and panel are on the same network subnet. Check TIA Portal project for compilation errors before retransferring.
Event ID: 40000: Internal device error detected. A hardware or firmware fault has been identified within the panel.
Perform a panel restart. If the error persists, update the panel firmware via TIA Portal. If unresolved, the panel may require repair or replacement.
Event ID: 50000: Operator panel memory error. Insufficient or corrupted user memory detected.
Delete unused project data and re-download the project. If the error persists, perform a factory reset and reload the project from TIA Portal.
Event ID: 70010: Firmware update failed or firmware version mismatch between the HMI panel and the TIA Portal project version.
Re-flash the panel firmware using the correct firmware version matching the TIA Portal project. Ensure stable power supply during firmware update.
Event ID: 3000: Tag read/write error. A configured tag could not be read from or written to the connected PLC.
Verify the PLC data block and tag addresses referenced in the HMI project are correct and accessible. Check PLC program for data block protection settings.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC KTP400 Basic (6AV6646-1BC24-0AA1)?

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 when configured appropriately in TIA Portal.

What software is required to configure and program this HMI panel?

The KTP400 Basic is configured using Siemens TIA Portal with the WinCC Basic engineering software package. A minimum of TIA Portal V13 is required for this panel variant.

What is the communication interface available on the 6AV6646-1BC24-0AA1?

This panel is equipped with one PROFINET interface via an RJ45 connector. It does not include an MPI or PROFIBUS interface.

Can this panel be operated with gloves?

Yes. The KTP400 Basic combines a resistive touchscreen with 4 physical function keys, allowing operation with standard industrial gloves using the function keys when touch input is not practical.

What is the front panel protection rating of this HMI?

The front face of the KTP400 Basic is rated IP65, providing full protection against dust and protection against low-pressure water jets. The rear of the unit is rated IP20.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel power connector. Verify polarity is correct. Check if the panel status LED indicates any activity.

Ensure the 24 V DC supply is within the specified tolerance range. Correct any wiring polarity issues. If the supply is confirmed correct and the display remains blank, the internal power supply or backlight may be faulty and the unit should be sent for repair.

HMI panel shows 'Connecting…' and cannot establish communication with the PLC

Verify the PROFINET cable is securely connected at both the panel and PLC ends. Check the IP address and PROFINET device name configured in TIA Portal match the actual PLC settings.

Correct any IP address or device name mismatches in the TIA Portal project and re-download to the HMI. Replace the PROFINET cable if physical damage is suspected. Ensure the PLC is powered on and in RUN mode.

Touchscreen does not respond to touch input

Check if the function keys still operate correctly to isolate whether the issue is with the touch layer only. Inspect the screen surface for damage or contamination.

Clean the screen surface with a soft, dry cloth. Perform a panel restart. If the touchscreen remains unresponsive after restart, the resistive touch layer may be damaged and the panel will require repair or replacement.

Project download from TIA Portal fails or times out

Confirm the panel is set to transfer mode (accessible via the Start Center on the panel). Verify the PC and panel are connected to the same network and the firewall on the PC is not blocking the TIA Portal communication.

Set the panel to transfer mode manually via the Start Center. Disable any PC firewall temporarily during download. Ensure the TIA Portal project is compiled without errors before initiating the transfer.

Panel displays incorrect or frozen tag values during runtime

Check the PLC communication status in the HMI runtime diagnostics. Verify the PLC data block addresses referenced in the HMI project have not changed after a PLC program update.

Re-download the updated HMI project to the panel after verifying all tag addresses match the current PLC program. Ensure the PLC data blocks are not set to optimized access if absolute addressing is used in the HMI project.

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