Siemens 6AV6446-1AA41-2BA4 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-2BA4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-2BA4
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-2BA4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-2BA4 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding visualization and operator control tasks in industrial automation environments. This panel features a 12-inch TFT display and is part of the SIMATIC MP 370 series, which provides high-performance human-machine interface functionality for complex process visualization. It is manufactured by Siemens and integrates seamlessly into SIMATIC-based automation architectures.

The MP 370 panel is equipped with a 12" TFT color display with a resolution of 800 x 600 pixels (SVGA), supporting 256 colors. It offers both touch screen and key operation capabilities, providing flexible operator interaction. The unit communicates via MPI, PROFIBUS DP, and Ethernet interfaces, enabling integration into a wide range of network topologies. Onboard memory supports project storage and runtime operation, and the panel runs on WinCC flexible runtime software. The operating voltage is 24 V DC, and the unit is rated to IP65 on the front panel for protection against dust and water ingress.

The SIMATIC MP 370 is widely used in manufacturing, process industries, automotive production, and machine building applications where a robust and versatile HMI solution is required. Its combination of touch and key operation makes it suitable for environments where operators need reliable and intuitive access to process data. The panel is commonly integrated into systems controlled by SIMATIC S7-300 and S7-400 PLCs, as well as third-party controllers via standard communication protocols.

Technical Specifications

Display Size	12 inch
Display Type	TFT color
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Touch Technology	Touch screen and membrane keys
Input/Operating Voltage	24 V DC
IP/Protection Rating	IP65 (front panel)
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
Mounting	Panel mounting
Series/Product Family	SIMATIC MP 370
Software	WinCC flexible Runtime

Common Error Codes & System Events

Event ID: 10000: Connection to PLC lost or communication timeout detected between the HMI panel and the configured controller.
Check MPI/PROFIBUS/Ethernet cabling and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both devices if necessary.
Event ID: 10001: Connection to PLC established after a previous communication failure.
Informational event. No corrective action required. Monitor for recurring disconnections which may indicate an unstable network.
Event ID: 20000: Tag read error. The HMI is unable to read a configured tag from the controller.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for address changes.
Event ID: 40000: Project download error. A project transfer to the panel was interrupted or failed.
Check the transfer cable or network connection. Ensure WinCC flexible version is compatible with the panel firmware. Retry the transfer after restarting the panel in transfer mode.
Event ID: 50000: Runtime system error. The WinCC flexible runtime encountered an internal fault during operation.
Restart the panel. If the error persists, reload the project from WinCC flexible. Check for corrupted project files or insufficient panel memory.
Event ID: 70000: Alarm buffer overflow. The number of pending alarms has exceeded the configured alarm buffer capacity.
Acknowledge and clear existing alarms. Review alarm configuration in WinCC flexible to increase buffer size or reduce alarm frequency.
Event ID: 110000: Panel operating system or firmware version mismatch detected.
Update the panel firmware using ProSave or WinCC flexible to match the version required by the project. Ensure compatibility between the project and firmware versions.

Frequently Asked Questions

What communication interfaces are available on the 6AV6446-1AA41-2BA4?

The SIMATIC MP 370 (6AV6446-1AA41-2BA4) supports MPI, PROFIBUS DP, and Ethernet (RJ45) communication interfaces, allowing connection to SIMATIC S7 PLCs and other compatible controllers.

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

This panel is configured using Siemens WinCC flexible engineering software. The panel runs WinCC flexible Runtime for project execution.

Is this panel compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the MP 370 is fully compatible with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP, and can also connect via Ethernet to S7 controllers with appropriate communication modules.

What is the front panel protection rating of the 6AV6446-1AA41-2BA4?

The front panel of the MP 370 is rated to IP65, providing protection against dust ingress and low-pressure water jets.

What is the operating supply voltage for this panel?

The panel operates on a 24 V DC supply voltage, which is standard for SIMATIC HMI devices in this series.

Troubleshooting

Display remains blank after power on

Check that 24 V DC supply voltage is present at the power connector. Measure voltage at the panel terminals to confirm adequate supply. Inspect the internal fuse if accessible.

Ensure the power supply is within the 24 V DC specification and can deliver sufficient current. Replace the power supply or internal fuse if faulty. If the backlight has failed, the panel may require backlight or display replacement.

Panel cannot establish communication with the PLC

Verify MPI or PROFIBUS address settings on both the panel and PLC. Check cable connections, termination resistors on the bus, and cable integrity. Confirm the correct communication driver is configured in the WinCC flexible project.

Correct any address mismatches in the HMI project or PLC configuration. Replace damaged cables and ensure proper bus termination at both ends of the PROFIBUS or MPI network. Reload the project if configuration changes were made.

Touch screen does not respond or responds inaccurately

Attempt to recalibrate the touch screen through the panel's Start Center or Control Panel settings. Check for physical damage or contamination on the touch surface.

Perform a touch screen calibration via the panel's operating system settings. Clean the touch surface with a soft, dry cloth. If calibration fails or the touch screen remains unresponsive, the touch screen assembly may require replacement.

Project transfer from WinCC flexible fails

Check the transfer connection (Ethernet or MPI/PROFIBUS cable). Ensure the panel is set to transfer mode via the Start Center. Verify that the WinCC flexible version is compatible with the panel firmware version.

Set the panel to transfer mode manually through the Start Center. Use ProSave to update firmware if a version mismatch exists. Retry the transfer using a known-good cable or network connection.

Panel repeatedly restarts or crashes during runtime

Check available memory on the panel and ensure the loaded project does not exceed panel memory limits. Review the project for excessive tag polling rates or large graphic objects that may overload the runtime.

Optimize the WinCC flexible project by reducing image complexity, lowering tag update cycles, and removing unused resources. Reload the project after optimization. If restarts persist, consider a firmware update or hardware inspection for faults.

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