Siemens 6AV6446-1AA41-0BB3 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-0BB3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-0BB3
Price: 4076.00 EUR
Availability: InStock

€ 4.076,00

Condition

Clear

SKU: 6AV6446-1AA41-0BB3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-0BB3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI Multi Panel series by Siemens. It is a high-performance operator panel designed for demanding visualization and control tasks in industrial automation environments. This unit features a 12-inch TFT display and runs on the Windows CE operating system, making it suitable for complex HMI applications.

The MP 370 (6AV6446-1AA41-0BB3) is equipped with a touch-sensitive screen interface and supports a wide range of communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling seamless integration into existing Siemens automation networks. It offers substantial onboard memory for project storage and runtime data, and supports configuration via Siemens WinCC flexible engineering software. The panel is built to industrial standards with a robust front panel rated to IP65, ensuring protection against dust and water ingress in harsh production environments.

The SIMATIC MP 370 is widely deployed in manufacturing, automotive, food and beverage, chemical processing, and machine tool industries. Its combination of a large display, versatile communication options, and Windows CE-based runtime environment makes it well suited for applications requiring complex process visualization, recipe management, alarm logging, and trend display on the factory floor.

Technical Specifications

Display Size	12 inch
Display Type	TFT color LCD
Display Colors	256 colors
Touch Technology	Resistive touch screen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
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
Engineering Software	WinCC flexible

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 communication partner has been lost.
Check the communication cable and connector integrity. Verify MPI/PROFIBUS address settings and baud rate configuration. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: No connection to the PLC. The HMI cannot establish a connection to the configured PLC at startup.
Verify network address settings on both the HMI and PLC. Check physical wiring and termination resistors on PROFIBUS. Confirm the PLC project is loaded and running.
Event ID: 20000: Tag read error. The HMI was unable to read the value of a configured process tag from the PLC.
Check that the tag address configured in WinCC flexible matches the actual PLC data block or memory address. Verify PLC program is running and the address exists.
Event ID: 20001: Tag write error. The HMI failed to write a value to the configured PLC tag.
Confirm the PLC memory area is not write-protected. Check tag address configuration and ensure the PLC is in a state that accepts write commands.
Event ID: 40000: Project loading error. The HMI runtime was unable to load the configured project file from internal memory.
Transfer the project again from the engineering PC using WinCC flexible. Check available storage memory on the panel and ensure the project file is not corrupted.
Event ID: 50000: System memory low. Available RAM on the HMI panel is critically low, which may cause runtime instability.
Reduce the number of simultaneously active screens or objects. Optimize the project by reducing image sizes and the number of active tags. Restart the panel to clear memory.
Event ID: 60000: Internal device error or hardware fault detected by the panel self-diagnostic routine.
Perform a panel restart. If the error persists, back up the project and perform a factory reset. Contact Siemens technical support or arrange for hardware inspection and repair.

Frequently Asked Questions

What is the display size and type of the 6AV6446-1AA41-0BB3?

The 6AV6446-1AA41-0BB3 features a 12-inch TFT color LCD with a resistive touch screen interface supporting 256 colors.

What communication interfaces are supported by the MP 370?

The MP 370 supports MPI, PROFIBUS DP, Ethernet (TCP/IP), and RS-422/485 serial interfaces, allowing integration with a wide range of Siemens PLCs and third-party controllers.

Which engineering software is used to configure the SIMATIC MP 370?

The MP 370 is configured using Siemens WinCC flexible, which allows project creation, tag configuration, alarm management, and project transfer to the panel.

What is the supply voltage for the 6AV6446-1AA41-0BB3?

The panel operates on a 24 V DC supply voltage.

Is the MP 370 compatible with SIMATIC S7 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 communication over Ethernet with appropriate configuration.

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply terminals. Measure voltage at the panel connector. Inspect the internal fuse if accessible.

Ensure the power supply is correctly wired and providing stable 24 V DC. If voltage is correct and display remains blank, the internal power supply board or backlight inverter may have failed and the unit should be sent for repair.

Touch screen does not respond or responds inaccurately

Determine whether the issue is a complete lack of response or positional inaccuracy. Check for physical damage or contamination on the screen surface.

Perform a touch screen calibration via the Windows CE control panel or the SIMATIC HMI service menu. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the touch panel overlay may need replacement.

HMI cannot connect to PLC via PROFIBUS

Verify the PROFIBUS cable is correctly connected and terminated at both ends. Check that the MPI/PROFIBUS address on the HMI matches the configured communication partner address in the project.

Correct any address conflicts, ensure termination resistors are active only at the physical ends of the bus, and confirm the baud rate matches across all devices. Re-transfer the project if communication parameters were changed.

Project transfer from WinCC flexible fails

Check the transfer connection type (Ethernet or MPI/PROFIBUS). Ensure the panel is in Transfer mode and the PC firewall or antivirus is not blocking the WinCC flexible transfer application.

Set the panel to Transfer mode via the Start Center. Verify the IP address or MPI address settings match in WinCC flexible transfer settings. Disable firewall temporarily during transfer if needed and retry.

Panel freezes or restarts unexpectedly during operation

Check for power supply instability or voltage drops below 24 V DC. Review the alarm and event log on the panel for any system memory or runtime errors preceding the freeze.

Stabilize the power supply and ensure adequate current capacity. Optimize the HMI project to reduce memory usage. If the problem persists, perform a firmware update or factory reset and reload the project.

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