Siemens 6AV6446-3AA41-2BY4 SIMATIC MP 370

Name: Siemens 6AV6446-3AA41-2BY4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-3AA41-2BY4
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-3AA41-2BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA41-2BY4 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization applications. This unit features a 12-inch TFT color display and is part of Siemens' high-performance operator panel lineup, offering robust local HMI functionality for industrial automation environments. The MP 370 series bridges the gap between compact operator panels and full PC-based SCADA systems.

The 6AV6446-3AA41-2BY4 variant is equipped with a resistive touch screen interface and supports communication via MPI, PROFIBUS DP, and Ethernet interfaces, enabling integration with a wide range of Siemens SIMATIC S7 controllers. The panel runs WinCC flexible runtime software and provides substantial onboard memory for project data, recipes, and historical logs. It is built to withstand industrial environments, carrying a front-panel IP65 protection rating and operating across a wide temperature range suitable for factory floor installation.

The MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant automation. Its combination of a large color display, touch operation, and multi-protocol communication makes it suitable for complex HMI applications requiring detailed process visualization, alarm management, and recipe handling. The panel is compatible with SIMATIC S7-300, S7-400, and S7-200 controller families, making it a versatile choice for both new installations and system upgrades.

Technical Specifications

Display Size	12 inch
Display Type	TFT color
Display Resolution	800 x 600 px (SVGA)
Display Colors	256 colors
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
IP Protection Rating (Front)	IP65
IP Protection Rating (Rear)	IP20
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC MP 370

Common Error Codes & System Events

Event ID: 1000: Project transfer error — communication between the configuration PC and the panel could not be established during download.
Check the transfer cable and interface settings. Ensure the correct communication port and transfer mode are selected in WinCC flexible. Verify the panel is in transfer mode.
Event ID: 1003: Project data corrupted or incompatible — the loaded project file cannot be executed by the panel runtime.
Recompile the project in WinCC flexible and retransfer. Ensure the WinCC flexible version matches the firmware version on the panel.
Event ID: 2000: Connection to PLC lost — the configured communication connection to the SIMATIC controller has been interrupted.
Check MPI/PROFIBUS cable connections and termination resistors. Verify PLC is powered and running. Check station address configuration on both panel and PLC.
Event ID: 2001: Tag read/write error — a configured tag could not be read from or written to the connected controller.
Verify the tag address exists in the PLC program. Check data block numbers and variable addresses in the WinCC flexible project. Confirm PLC is in RUN mode.
Event ID: 3000: System memory low — available runtime memory on the panel is insufficient to execute the current project.
Reduce the project size by optimizing graphics, limiting historical data storage, or reducing the number of active screens. Consider archiving data to an external memory card.
Event ID: 4000: Internal hardware fault — a self-diagnostic routine has detected an internal hardware error on the panel.
Perform a panel restart. If the fault persists, note the event ID details and contact Siemens technical support. The panel may require repair or replacement of internal components.
Event ID: 5000: Firmware update failed — the firmware update process was interrupted or the firmware file is incompatible.
Restart the panel and retry the firmware update using the correct firmware version for this panel type. Use a formatted and compatible memory card or ProSave tool via Ethernet.

Frequently Asked Questions

Which Siemens controllers is the MP 370 6AV6446-3AA41-2BY4 compatible with?

The MP 370 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. Ethernet-based communication with S7 controllers is also supported using the integrated RJ45 port.

What software is used to configure and program the MP 370 panel?

The MP 370 is configured using Siemens WinCC flexible software. The project is compiled on a PC and transferred to the panel via MPI, PROFIBUS, or Ethernet connection.

What is the display resolution and touch technology of this panel?

The 6AV6446-3AA41-2BY4 features an 800 x 600 pixel (SVGA) TFT color display with a resistive touch screen interface.

What is the front panel protection rating of the MP 370?

The front panel of the MP 370 carries an IP65 protection rating, making it suitable for installation in environments where dust and water jets may be present.

Can the MP 370 be used with an external memory card for data storage?

Yes, the MP 370 supports external memory cards (CompactFlash) for storing project data, recipes, historical logs, and firmware updates.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel power connector. Check for correct polarity. Inspect the internal fuse if accessible.

Ensure the power supply provides a stable 24 V DC within the specified tolerance. Replace the power supply if voltage is absent or unstable. If voltage is correct and display remains blank, the backlight or internal power board may require replacement.

Touch screen does not respond or responds inaccurately

Check whether the touch screen is physically damaged or contaminated. Attempt a touch screen recalibration via the panel's Start Center or service menu.

Clean the touch screen surface with a soft, dry cloth. Perform a touch screen calibration through the panel's operating system settings. If calibration fails repeatedly, the touch screen overlay may need to be replaced.

Panel cannot establish communication with the PLC

Verify MPI or PROFIBUS cable connections and check that bus termination resistors are correctly placed at both ends of the network. Confirm the panel's station address does not conflict with other devices on the bus.

Correct any wiring faults and ensure proper bus termination. Set unique station addresses for all devices. Verify the communication parameters in the WinCC flexible project match the PLC configuration.

Project transfer from PC to panel fails

Check the transfer cable integrity and confirm the correct interface (MPI, PROFIBUS, or Ethernet) is selected in WinCC flexible. Verify the panel is set to transfer mode via the Start Center.

Replace the transfer cable if damaged. Set the panel to transfer mode and retry the download. Ensure firewall or antivirus software on the PC is not blocking the ProSave or WinCC flexible communication.

Panel displays 'Runtime not started' or freezes on startup

The project file on the panel may be corrupted or incompatible with the installed firmware version. Check the firmware version via the Start Center diagnostics menu.

Retransfer a freshly compiled project from WinCC flexible. If the firmware version is mismatched, update the panel firmware using ProSave before retransferring the project.

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