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

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

€ 1.995,00

Condition

Clear

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

Description
Additional information

The Siemens 6AV6446-1AA41-1BA4 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization tasks. This panel is part of the SIMATIC MP 370 series, which offers a 12-inch TFT color display and is intended for use as a high-performance operator interface in industrial automation environments. It is manufactured by Siemens and combines robust hardware with the WinCC flexible runtime software environment.

The MP 370 features a 12.1-inch TFT display with a resolution of 800 x 600 pixels (SVGA) and 256 colors, providing clear visualization of process data and HMI graphics. The panel supports touch screen operation and is equipped with communication interfaces including PROFIBUS DP and MPI, enabling direct integration with Siemens SIMATIC S7 PLCs and third-party controllers. It runs on a Windows CE operating system and supports WinCC flexible runtime for project execution, offering substantial memory for project data and recipes. The unit operates on a 24 V DC supply and is rated to IP65 on the front face, ensuring protection against dust and water ingress in industrial settings.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical process industries where a reliable and feature-rich operator panel is required. Its large display area and touch interface make it suitable for complex HMI applications requiring detailed process overviews, alarm management, and trend displays. The panel's compatibility with the SIMATIC S7 controller family and its robust industrial design make it a practical choice for both OEM machine builders and end-user plant installations.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Display Type	TFT LCD
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	PROFIBUS DP, MPI, RS-232, USB
Operating System	Windows CE
IP/Protection Rating	IP65 (front), IP20 (rear)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10 % to 90 % (non-condensing)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC MP 370

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC or controller. The connection to the configured PLC address cannot be established.
Check PROFIBUS/MPI cable connections and termination resistors. Verify the PLC address settings in the WinCC flexible project match the physical PLC configuration. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Connection to PLC lost during runtime operation. The panel was previously connected but has lost communication.
Inspect cable integrity and connector seating on both the panel and PLC side. Check for electromagnetic interference sources near the communication cable. Restart the HMI project and verify PLC status.
Event ID: 20000: Project download error. The project transfer from the engineering PC to the panel has failed or been interrupted.
Verify the transfer cable connection and COM port settings. Ensure WinCC flexible version is compatible with the panel firmware. Check available memory on the panel and delete unused projects if necessary.
Event ID: 40000: System memory low warning. Available RAM or flash memory on the panel is critically low.
Delete unused projects, recipe data, and log files from the panel. Reduce the size of the active project or increase the use of external memory cards.
Event ID: 50000: Touchscreen calibration error or touch input not responding correctly to screen coordinates.
Perform a touchscreen recalibration via the panel's Control Panel settings in Windows CE. If calibration fails repeatedly, inspect the touch overlay for damage and consider replacement.
Event ID: 60000: Internal hardware fault detected. A self-diagnostic routine has identified a hardware component error.
Perform a full power cycle of the panel. If the fault persists, back up the project, perform a factory reset, and reload the project. If the error remains, the unit requires professional repair or replacement of the internal hardware.
Event ID: 70000: Firmware or operating system error. The panel OS has encountered an unrecoverable software exception.
Restart the panel. If the issue recurs, update the panel firmware to the latest compatible version using the Siemens ProSave tool. Perform a clean OS restore if necessary.

Frequently Asked Questions

What PLC systems is the 6AV6446-1AA41-1BA4 compatible with?

The MP 370 is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It also supports communication with S7-200 and third-party controllers through configurable drivers in WinCC flexible.

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

The panel is configured using Siemens WinCC flexible engineering software. The project is then transferred to the panel via a serial cable, USB, or network connection using the ProSave tool or directly from WinCC flexible.

What is the supply voltage for the 6AV6446-1AA41-1BA4?

The panel operates on a 24 V DC supply voltage. Ensure the power supply is adequately rated, typically at least 2 A, to handle startup inrush current.

Does this panel support recipe management and data logging?

Yes, the MP 370 supports recipe management, data logging, and trend display functions within the WinCC flexible runtime environment. Data can be stored internally or on an external memory card.

What is the front panel protection rating of this unit?

The front face of the 6AV6446-1AA41-1BA4 is rated to IP65, providing full protection against dust ingress and protection against low-pressure water jets, making it suitable for washdown-adjacent industrial environments.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check for correct polarity. Inspect the internal fuse if accessible. Verify the backlight is not simply set to minimum brightness in the Control Panel settings.

Correct any wiring or polarity issues at the power connector. If the supply voltage is correct and the display remains blank, the backlight inverter or internal power supply board may require replacement. Restore brightness settings via the Windows CE Control Panel if the panel is otherwise operational.

Touch screen does not respond or responds inaccurately

Attempt to interact with the panel using a stylus to determine if the issue is positional inaccuracy or complete non-response. Access the Windows CE Control Panel to check touch calibration settings.

Recalibrate the touch screen through the Windows CE Control Panel under stylus settings. If the touch screen is physically damaged or the calibration cannot be saved, the touch overlay assembly requires replacement.

HMI panel fails to communicate with the S7 PLC

Check the MPI or PROFIBUS DP cable for continuity and correct termination at both ends of the network. Verify the PLC node address and baud rate settings in the WinCC flexible project match the physical network configuration.

Replace or reseat the communication cable. Correct the PLC address and baud rate in the WinCC flexible project and re-download to the panel. Ensure bus termination resistors are correctly placed at both ends of the PROFIBUS segment.

Panel repeatedly reboots or freezes during operation

Check the 24 V DC supply for voltage drops or ripple, especially under load. Review the system event log in WinCC flexible for recurring fault event IDs. Inspect for excessive ambient temperature around the panel installation.

Stabilize the power supply and ensure it meets the panel's current requirements. Improve ventilation around the panel if overheating is suspected. If software-related, reload the WinCC flexible project or update the panel firmware using ProSave.

Project transfer from engineering PC to panel fails

Verify the transfer cable type and the COM port or USB settings on the PC. Confirm the panel is in Transfer mode (accessible via the Start Center on the panel). Check that the WinCC flexible version is compatible with the panel firmware version.

Switch the panel to Transfer mode manually via the Start Center. Use the correct transfer cable and ensure the PC COM port is not occupied by another application. Update panel firmware if a version mismatch is identified, then retry the project download.

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