Siemens 6AV6446-1AA41-2BA3 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-2BA3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-2BA3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-2BA3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-2BA3 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 Siemens' established SIMATIC HMI Multi Panel series, offering a high-performance operator interface for industrial automation environments. It serves as a human-machine interface (HMI) capable of running WinCC flexible runtime for comprehensive process visualization and control.

The MP 370 features a 12-inch TFT display with a resolution of 800 x 600 pixels (SVGA) and 256-color support, providing clear visualization of process data and graphics. It is equipped with a touch screen and an integrated membrane keyboard, offering flexible operator input options. The panel includes a 32 MB Flash memory for project storage, supports MPI, PROFIBUS DP, and Ethernet communication interfaces, and runs on a Windows CE operating system. It operates on a 24 V DC supply and is rated to IP65 at the front panel, making it suitable for panel-mount installations in industrial enclosures.

The SIMATIC MP 370 is widely deployed in manufacturing, automotive, food and beverage, chemical, and water treatment industries. It is typically used for machine-level HMI applications where a robust, mid-size display with multiple communication options is required. Its compatibility with Siemens S7 PLCs and support for PROFIBUS DP and Ethernet makes it a practical choice for integration into existing Siemens automation architectures.

Technical Specifications

Display Size	12 inch
Display Type	TFT color
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Touch Technology	Resistive touch screen with membrane keyboard
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Memory	32 MB Flash
Operating System	Windows CE
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
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, cUL

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 interrupted.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both the panel and PLC if necessary.
Event ID: 10001: Connection to PLC timed out. The HMI panel did not receive a response from the controller within the expected time frame.
Check network cabling and bus termination. Verify the PLC is in RUN mode and the communication parameters in WinCC flexible match the PLC configuration.
Event ID: 20000: Tag read error. The HMI panel was unable to read the value of a configured tag from the PLC.
Verify the tag address in WinCC flexible matches the actual PLC data block or memory area. Check PLC program for correct data area definitions.
Event ID: 40000: Project download error. A project transfer from the engineering PC to the HMI panel failed.
Check the transfer cable or network connection. Ensure the panel is in Transfer mode and that the correct communication interface is selected in WinCC flexible Transfer settings.
Event ID: 50000: Runtime error. WinCC flexible runtime encountered an internal error and may have terminated unexpectedly.
Restart the HMI panel. If the problem persists, re-download the project from WinCC flexible. Check for project configuration errors such as invalid scripts or missing resources.
Event ID: 70000: Flash memory write error. The panel was unable to write data to the internal Flash memory, which may affect recipe or alarm logging.
Check available Flash memory space. Delete unused projects or data. If the error persists, the internal Flash memory may be failing and the panel may require repair or replacement.
Event ID: 30000: Alarm logging error. The HMI panel was unable to write alarm entries to the configured alarm log.
Verify the alarm log storage location (internal Flash or memory card) has sufficient free space. Check that the memory card is properly inserted if external logging is configured.

Frequently Asked Questions

What communication interfaces does the 6AV6446-1AA41-2BA3 support?

The SIMATIC MP 370 supports MPI, PROFIBUS DP, and Ethernet (RJ45) communication interfaces, allowing integration with Siemens S7 PLCs and other compatible controllers.

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

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

What is the display size and resolution of this panel?

The 6AV6446-1AA41-2BA3 features a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and 256-color support.

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

Yes, the MP 370 is fully compatible with Siemens S7-300 and S7-400 PLCs via MPI or PROFIBUS DP, and can also communicate with S7-300/400 over Ethernet using the appropriate communication modules.

What is the front panel protection rating of the 6AV6446-1AA41-2BA3?

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

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check that the supply is within the specified tolerance. Inspect the internal fuse if accessible.

Ensure the 24 V DC supply is stable and within specification. If the supply is correct and the display remains blank, the internal power supply board or backlight inverter may be faulty and the unit should be sent for repair.

HMI panel does not communicate with the PLC

Check the MPI, PROFIBUS, or Ethernet cable connections and verify bus termination resistors are correctly placed. Confirm the PLC address and communication parameters in the WinCC flexible project match the physical setup.

Correct any wiring or termination issues. Update the communication parameters in WinCC flexible to match the PLC configuration and re-download the project. Restart both the panel and PLC after making changes.

Touchscreen does not respond or responds inaccurately

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

Perform a touch screen calibration via Start > Settings > Control Panel > Touch on the Windows CE interface. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the touch screen digitizer may need replacement.

Project transfer from PC to panel fails

Verify the panel is set to Transfer mode. Check the communication cable or network connection between the engineering PC and the panel. Confirm the correct interface is selected in WinCC flexible Transfer settings.

Switch the panel to Transfer mode via the panel's Start Center. Ensure the correct COM port, MPI address, or IP address is configured in WinCC flexible. Replace the transfer cable if it is suspected to be faulty.

Panel repeatedly restarts or crashes during runtime

Check for project configuration errors such as invalid scripts, missing tag connections, or corrupted project files. Monitor the panel's memory usage during runtime.

Re-download a clean version of the project from WinCC flexible. If the issue persists, perform a factory reset of the panel and re-download the project. Check for hardware faults such as failing Flash memory or insufficient power supply stability.

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