Siemens 6AV6446-1AA40-2AA3 SIMATIC MP 370

Name: Siemens 6AV6446-1AA40-2AA3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA40-2AA3
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1AA40-2AA3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-2AA3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and plant-level visualization tasks. This unit features a 12-inch TFT display and is part of Siemens' high-performance panel range, offering a robust operator interface for industrial automation environments. It is a Windows CE-based panel capable of running WinCC flexible runtime for comprehensive HMI functionality.

The MP 370 (6AV6446-1AA40-2AA3) is equipped with a 12" TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch operation. It provides multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (10/100 Mbit/s), enabling integration with SIMATIC S7 PLCs and other controllers. The panel runs on a 24 V DC supply, includes onboard flash memory, and supports additional storage via CompactFlash cards. It is certified to relevant CE and UL standards and carries an IP65 protection rating on the front face.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, process industries, and factory automation where a high-resolution, multi-protocol HMI panel is required. Its compatibility with SIMATIC S7-300, S7-400, and other controllers makes it suitable for complex SCADA and supervisory visualization tasks. The panel's robust construction and broad communication capability make it appropriate for both standalone machine control panels and distributed control architectures.

Technical Specifications

Display Size	12 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors (TFT)
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet 10/100 Mbit/s, RS-422/485
Operating System	Windows CE
Memory	12 MB flash (user memory), CompactFlash slot
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 HMI Multi Panel MP 370

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 MPI/PROFIBUS or Ethernet cabling and connector integrity. Verify PLC address settings match the HMI project configuration. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Connection timeout to the configured PLC. The HMI did not receive a response from the controller within the expected time window.
Check network cable and bus termination resistors. Verify baud rate and station address settings on both HMI and PLC. Restart both devices if the issue persists.
Event ID: 20000: Tag read error. The HMI is unable to read a configured tag or variable from the controller.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check that the PLC program contains the referenced variable.
Event ID: 40000: Project download error. A project transfer from the engineering PC to the panel has failed or is incomplete.
Check the transfer cable or Ethernet connection between the PC and panel. Ensure the panel is in Transfer mode. Retry the download using WinCC flexible.
Event ID: 70010: System memory low. The available runtime memory on the panel is insufficient to load or run the current project.
Reduce the size of the HMI project (images, scripts, tags). Clear unused data from the CompactFlash card. Consider archiving log data to free memory.
Event ID: 110000: Recipe data error. A recipe record could not be read from or written to the configured storage location.
Check the CompactFlash card for errors or insufficient space. Verify recipe configuration in WinCC flexible. Replace the CompactFlash card if it is faulty.
Event ID: 50000: Script runtime error. A configured VBScript or function in the HMI project has encountered an execution error.
Review the script logic in WinCC flexible for syntax or runtime errors. Check that all referenced tags and functions are correctly defined in the project.

Frequently Asked Questions

What communication interfaces does the 6AV6446-1AA40-2AA3 support?

The MP 370 supports MPI, PROFIBUS DP, Ethernet (10/100 Mbit/s), and RS-422/485 serial interfaces, allowing connection to SIMATIC S7 PLCs and third-party controllers.

Which HMI engineering software is used to configure this panel?

The panel is configured using Siemens WinCC flexible (2004 or later versions). Projects are downloaded to the panel via Ethernet or MPI/PROFIBUS connection.

What is the display size and resolution of this panel?

The 6AV6446-1AA40-2AA3 features a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA).

Is the MP 370 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 also supports S7-1200/1500 via Ethernet with appropriate driver configuration.

What is the front panel protection rating of this unit?

The front panel of the 6AV6446-1AA40-2AA3 carries an IP65 protection rating, making it suitable for installation in control cabinet doors exposed to dust and water spray.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check that the supply is within the specified range and that the power connector is fully seated.

Restore the 24 V DC supply to within specification. If the supply is correct and the display remains blank, the internal backlight or power supply board may be faulty and require replacement.

Panel does not establish communication with the PLC

Verify the MPI or PROFIBUS address configured in the HMI project matches the address set on the panel. Check bus termination at both ends of the cable and inspect the connector for bent or damaged pins.

Correct any address mismatches in the WinCC flexible project and re-download. Replace damaged cables or connectors. Ensure bus termination resistors are correctly installed at the cable ends.

Touch screen does not respond or responds inaccurately

Check whether the touch screen responds at all by observing any visual feedback on the display. An inaccurate response may indicate a calibration drift; no response may indicate a hardware fault.

Perform a touch screen recalibration via the panel's Control Panel settings in Windows CE. If recalibration does not resolve the issue, the touch screen overlay or controller board may need replacement.

Panel repeatedly restarts or crashes during operation

Check the CompactFlash card for errors and verify that the WinCC flexible project is not corrupted. Monitor system memory usage during runtime to identify memory overflow conditions.

Replace the CompactFlash card with a new one and re-download the project. Reduce project complexity if memory usage is excessive. If restarts continue, the panel's main board may require inspection or replacement.

Project transfer from PC to panel fails

Confirm the panel is set to Transfer mode (accessible via the Start Center on boot). Check the Ethernet or MPI cable connection between the PC and the panel, and verify firewall settings on the PC are not blocking the transfer.

Switch the panel to Transfer mode before initiating the download in WinCC flexible. Use a direct Ethernet crossover cable or verified network connection. Disable PC firewall temporarily to rule out network blocking.

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