Siemens 6AV6446-1AA41-0BB5 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-0BB5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-0BB5
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-0BB5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-0BB5 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level visualization and operator control tasks. This panel is part of the MP 370 series, which offers a 12-inch display and is intended for use as a high-performance operator interface in industrial automation environments. It is manufactured by Siemens and integrates seamlessly within the SIMATIC automation ecosystem.

The MP 370 features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports both touch and key operation, providing flexible interaction options for operators. It runs on Windows CE and is configured using Siemens WinCC flexible engineering software, supporting a wide range of communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP). The panel includes onboard flash memory for project storage, supports USB ports for peripherals and data transfer, and is rated for continuous industrial operation with a robust front panel design.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant environments where a reliable and feature-rich HMI is required at the machine or cell level. Its combination of touch and function key operation makes it suitable for applications requiring both graphical navigation and direct key-based control. The panel's compatibility with SIMATIC S7 PLCs and support for multiple fieldbus protocols makes it a versatile choice for complex automation systems.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Type	TFT color LCD
Display Colors	256 colors
Touch Technology	Resistive touch screen with function keys
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Operating System	Windows CE
Memory	12 MB flash (user memory)
USB Ports	2 x USB (Type A)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP/Protection Rating	IP65 (front panel)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC MP 370

Common Error Codes & System Events

Event ID: 10000: Configuration error detected during project download or startup; project data may be corrupt or incompatible with the panel firmware version.
Re-download the project using WinCC flexible. Ensure the firmware version on the panel matches the version used during project compilation.
Event ID: 10001: Communication connection to the PLC has been lost or cannot be established.
Check MPI/PROFIBUS/Ethernet cabling and connector integrity. Verify PLC address settings and communication parameters in the project configuration.
Event ID: 20000: System memory low; available RAM for runtime operation is critically low.
Reduce the number of active screens or objects. Optimize the project to reduce memory usage and restart the panel.
Event ID: 40000: Tag read/write error; a configured variable could not be read from or written to the connected controller.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for address conflicts.
Event ID: 50000: Recipe data error; a recipe record could not be read or written correctly.
Check recipe configuration in WinCC flexible. Verify that the recipe data storage location (flash or memory card) is accessible and not full.
Event ID: 70000: Alarm buffer overflow; the number of pending alarms has exceeded the buffer capacity.
Acknowledge and clear existing alarms. Review alarm configuration to reduce simultaneous alarm generation and increase buffer size if possible in the project settings.
Event ID: 110000: Backup/restore operation failed; data could not be backed up to or restored from the memory card.
Check that the memory card is correctly inserted and not write-protected. Reformat the card if necessary and retry the backup/restore operation.

Frequently Asked Questions

What communication interfaces are supported by the 6AV6446-1AA41-0BB5?

The MP 370 supports MPI, PROFIBUS DP, and Ethernet (TCP/IP) interfaces, as well as RS-422/485 serial communication, allowing connection to a wide range of Siemens and third-party controllers.

Which engineering software is used to configure this panel?

The SIMATIC MP 370 is configured using Siemens WinCC flexible software. The project must be compiled with a compatible version of WinCC flexible and downloaded to the panel via Ethernet, MPI, or USB.

Is the 6AV6446-1AA41-0BB5 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 communicate with S7 controllers over Ethernet using the TCP/IP protocol.

What is the front panel protection rating of this HMI?

The front panel of the MP 370 is rated IP65, making it resistant to dust ingress and low-pressure water jets, suitable for installation in industrial control cabinet doors.

Can the firmware on the MP 370 be updated in the field?

Yes, the firmware can be updated using the ProSave tool from Siemens, transferring the firmware image via Ethernet or MPI connection to the panel.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the panel power connector. Verify that the supply is within the specified range and that the connector is firmly seated.

Restore correct 24 V DC supply. If voltage is correct and display remains blank, the internal backlight or power supply board may have failed and the unit should be sent for repair or the backlight replaced.

Panel does not communicate with the PLC

Verify the communication cable type and wiring for the selected interface (MPI, PROFIBUS, or Ethernet). Check the PLC address and baud rate settings configured in the WinCC flexible project against the actual PLC settings.

Correct any wiring faults or address mismatches. Replace the communication cable if damaged. Ensure the PLC is in RUN mode and that the correct communication driver is selected in the project.

Touchscreen does not respond or responds inaccurately

Check for physical damage or contamination on the touch surface. Attempt to recalibrate the touchscreen using the panel's Control Panel settings accessible during startup.

Clean the touch surface with a soft, dry cloth. Perform a touchscreen recalibration via the Windows CE Control Panel. If the issue persists, the touch overlay may need replacement.

Project download fails or times out

Verify the Ethernet or MPI connection between the engineering PC and the panel. Check that the panel is in transfer mode and that no firewall or network settings are blocking the connection.

Switch the panel to transfer mode manually via the Start Center. Disable any PC firewall temporarily during download. Ensure the correct IP address or MPI address is configured in the WinCC flexible transfer settings.

Panel freezes or restarts unexpectedly during operation

Check for overheating by verifying the ambient temperature and ensuring adequate ventilation around the panel. Review the project for memory-intensive operations or script errors that could cause runtime instability.

Ensure the installation environment is within the 0 to 50 °C operating temperature range. Optimize the WinCC flexible project to reduce CPU and memory load. Update the panel firmware to the latest available version to resolve known runtime issues.

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