Siemens 6AV6446-1BA40-2BA3 MP 370

€ 2.495,00

SKU: 6AV6446-1BA40-2BA3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1BA40-2BA3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI Multi Panel series, designed for demanding visualization and operator control tasks in industrial automation environments. This panel features a 12-inch TFT display and runs on the Windows CE operating system, making it suitable for complex HMI applications. It is part of Siemens' established SIMATIC HMI product line, which is widely used across manufacturing and process industries.

The MP 370 (6AV6446-1BA40-2BA3) is equipped with a touch-sensitive screen and supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet, enabling seamless integration with SIMATIC S7 PLCs and other controllers. The panel is powered by a 24 V DC supply and provides sufficient onboard memory for storing project data, recipes, and historical logs. Its robust industrial-grade housing is rated for continuous operation in harsh environments, and it supports configuration via SIMATIC WinCC flexible engineering software.

The MP 370 is commonly deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant operations where a reliable and versatile operator interface is required. Its large display area and touch operation make it well suited for applications requiring detailed process visualization, alarm management, and recipe handling. The panel's compatibility with the SIMATIC controller ecosystem makes it a practical choice for system integrators working within Siemens automation architectures.

Technical Specifications

Display Size	12 inch
Display Type	TFT color LCD
Display Colors	256 colors
Display Resolution	800 x 600 px (SVGA)
Touch Technology	Resistive touch screen
Input Voltage	24 V DC
Power Consumption	Max. 30 W
Operating System	Windows CE
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
Serial Interface	RS-422/RS-485
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
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Connection to PLC lost or communication timeout detected.
Check MPI/PROFIBUS/Ethernet cable connections and verify PLC is powered and running. Check communication parameters in WinCC flexible project.
Event ID: 10001: Tag read/write error — the HMI cannot access a configured PLC tag.
Verify the tag address in the WinCC flexible project matches the PLC data block or memory area. Check PLC program for address conflicts.
Event ID: 20000: Project download failed or project data is corrupted.
Re-download the project from the engineering PC using WinCC flexible. Ensure the correct panel type and OS version are selected in the project settings.
Event ID: 40000: System memory low — available RAM is insufficient for current operation.
Reduce the number of active screens, limit historical data logging, or archive and clear existing log files to free memory.
Event ID: 50000: Recipe data error — recipe record cannot be read or written.
Check recipe configuration in WinCC flexible. Verify that the recipe memory area on the panel has sufficient free space and that tag assignments are correct.
Event ID: 70000: Alarm logging error — alarm buffer is full or logging target is unavailable.
Archive and clear the alarm log. Verify that the logging destination (internal flash or external memory card) is accessible and has sufficient space.
Event ID: 110000: Screen saver or backlight timeout has activated, display appears off.
Touch the screen or press any key to reactivate the display. Adjust backlight timeout settings in the panel's Control Panel if needed.

Frequently Asked Questions

Which engineering software is used to configure the MP 370 (6AV6446-1BA40-2BA3)?

The MP 370 is configured using Siemens SIMATIC WinCC flexible. Projects are created on a PC and downloaded to the panel via MPI, PROFIBUS, or Ethernet.

Which PLCs are compatible with this HMI panel?

The MP 370 is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. Ethernet-based communication with S7 controllers is also supported.

What is the supply voltage for the 6AV6446-1BA40-2BA3?

The panel operates on a 24 V DC supply voltage. Ensure the power supply can deliver sufficient current to meet the panel's maximum power consumption of approximately 30 W.

Can the MP 370 be used with third-party controllers?

Yes, the MP 370 supports communication with third-party controllers via its serial RS-422/RS-485 interface using standard protocols such as Modbus RTU, depending on the driver configuration in WinCC flexible.

What is the front panel protection rating of this unit?

The front panel of the MP 370 is rated IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for installation in industrial control panels.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel's power connector. Check that the supply is within tolerance and that the power connector is fully seated.

If supply voltage is correct, check the internal backlight. The CCFL backlight lamp may have failed and require replacement. If the panel shows no signs of life at all, inspect the internal power supply board for damage.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touch screen via the panel's Control Panel (Start > Settings > Control Panel > Touch). Check for physical damage or contamination on the screen surface.

Perform a touch screen recalibration. If the issue persists, the resistive touch overlay may be worn or damaged and will need to be replaced.

Panel fails to communicate with the PLC

Verify the MPI or PROFIBUS address settings on both the panel and the PLC. Check cable integrity and termination resistors on the PROFIBUS network. Use a bus diagnostic tool if available.

Correct any address conflicts, replace damaged cables, and ensure proper bus termination. Re-download the WinCC flexible project to confirm communication parameters are correctly configured.

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 panel for signs of overheating by checking ambient temperature and ventilation around the unit.

Stabilize the power supply and ensure adequate ventilation. If the problem persists, back up the project, perform a factory reset via the panel's loader menu, and re-download the project.

Project download fails from engineering PC

Verify the communication cable between the PC and panel (MPI adapter or Ethernet cable). Confirm that the WinCC flexible project is configured for the correct panel type (MP 370, 12-inch touch).

Use the correct PC adapter (e.g., PC Adapter USB for MPI) and ensure the driver is properly installed. Match the panel OS version in the project settings and retry the download.

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