Siemens 6AV6446-3AA40-3BY3 SIMATIC MP 370

Name: Siemens 6AV6446-3AA40-3BY3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-3AA40-3BY3
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-3AA40-3BY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA40-3BY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding visualization and operator control tasks in industrial automation environments. This unit features a 15-inch TFT color display and is part of the MP 370 series, which represents a high-performance class of Siemens panel PCs and multi panels intended for complex process visualization. It operates within the SIMATIC HMI product range and is fully integrated into the Siemens TIA and STEP 7 engineering environments.

The MP 370 Touch (6AV6446-3AA40-3BY3) is equipped with a resistive touchscreen interface on its 15-inch TFT display with a resolution of 1024 x 768 pixels (XGA) and 64,000 colors. It supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling flexible integration into existing Siemens and third-party control architectures. The panel runs on Windows CE and is configurable using WinCC flexible engineering software. It provides onerous memory capacity for project data and supports USB and CF card interfaces for data transfer and project storage.

The SIMATIC MP 370 is widely deployed in manufacturing, process automation, and machine building industries where large-format visualization and robust operator interaction are required. Its 15-inch display makes it suitable for control cabinets and operator stations in applications such as packaging machinery, automotive assembly lines, water treatment plants, and chemical processing facilities. The panel's compatibility with SIMATIC S7 PLCs and its support for PROFIBUS DP makes it a natural fit for Siemens-centric automation architectures.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	64,000 colors
Display Type	TFT color LCD
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 35 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), USB
Memory	12 MB project memory (Flash)
Operating System	Windows CE
Engineering Software	WinCC flexible
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP Rating (Front)	IP65
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Connection to PLC lost or communication timeout on configured connection.
Check MPI/PROFIBUS/Ethernet cabling and termination resistors. Verify PLC is powered and running. Check connection parameters in WinCC flexible project.
Event ID: 10001: Connection to PLC established after a previous loss of communication.
Informational event. No corrective action required. Monitor for recurring disconnections that may indicate network instability.
Event ID: 20000: Tag read/write error — the panel cannot read or write a configured tag from/to the PLC.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory area. Check PLC program for address conflicts.
Event ID: 40000: Project download error — project transfer to the panel failed or was interrupted.
Check the transfer cable or Ethernet connection between the engineering PC and the panel. Ensure the panel is in Transfer mode and that WinCC flexible version is compatible.
Event ID: 50000: Insufficient memory — project memory on the panel is full or nearly exhausted.
Reduce project size by optimizing graphics, removing unused tags, or compressing images. Consider archiving historical data to an external CF card.
Event ID: 60000: CF card not detected or read/write error on the CompactFlash card.
Remove and reinsert the CF card. Check card for damage or corruption. Replace with a compatible CF card if errors persist.
Event ID: 70000: System runtime error — WinCC flexible Runtime has encountered an internal fault.
Restart the panel. If the error recurs, reload the project via WinCC flexible. Check for firmware compatibility between the panel and the project version.

Frequently Asked Questions

What display size and resolution does the 6AV6446-3AA40-3BY3 have?

The 6AV6446-3AA40-3BY3 features a 15-inch TFT color display with a resolution of 1024 x 768 pixels (XGA) and supports 64,000 colors.

Which communication interfaces are available on this MP 370 panel?

The panel supports MPI, PROFIBUS DP, and Ethernet (TCP/IP) for PLC connectivity, as well as USB ports for peripherals and data transfer. A CompactFlash card slot is also provided for storage.

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

The MP 370 is configured using Siemens WinCC flexible engineering software. It is not compatible with the newer TIA Portal WinCC Advanced without a migration step.

Is the 6AV6446-3AA40-3BY3 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 appropriate driver.

What is the front panel protection rating of this unit?

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.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check that the voltage is within the specified range and that polarity is correct. Inspect the internal fuse if accessible.

Correct any supply voltage issues. If the supply is confirmed good and the display remains blank, the backlight inverter or the display itself may have failed and the unit should be sent for repair or the backlight replaced.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touchscreen via the Windows CE Control Panel or the SIMATIC HMI startup menu. Check for physical damage, scratches, or contamination on the touch surface.

Perform a touchscreen recalibration. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the resistive touch overlay may be worn or damaged and requires replacement.

Panel fails to establish communication with the PLC

Verify the MPI or PROFIBUS address configured in the WinCC flexible project matches the address set on the panel and the PLC. Check cable integrity and bus termination at both ends of the network.

Correct address mismatches in the project configuration and reload the project to the panel. Replace damaged cables and ensure proper bus termination resistors are installed at the physical ends of the PROFIBUS or MPI segment.

Project transfer from engineering PC to panel fails

Confirm the panel is set to Transfer mode (accessible via the Start Center on the panel). Check that the IP address or MPI address used in WinCC flexible matches the panel settings. Verify the Ethernet or MPI cable is functional.

Set the panel to Transfer mode before initiating the download. Correct any address mismatches. Try a different cable or transfer method (e.g., switch from MPI to Ethernet transfer). Ensure the WinCC flexible version matches the panel firmware version.

Panel displays a white or distorted screen after startup

This may indicate a corrupted project file or a firmware issue. Attempt to restart the panel and observe whether the issue occurs before or after the WinCC flexible Runtime loads.

Reload the project from the engineering PC using WinCC flexible. If the issue persists before Runtime loads, perform a panel reset to factory defaults via the SIMATIC HMI startup menu and re-transfer the project. A firmware update may also be required.

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