Siemens 6AV6446-3AA41-3BY3 SIMATIC MP 370

Name: Siemens 6AV6446-3AA41-3BY3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-3AA41-3BY3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-3AA41-3BY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA41-3BY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization tasks. This unit features a 12-inch TFT display and is part of Siemens' high-performance operator panel series, offering robust human-machine interface capabilities for industrial environments. The MP 370 series bridges the gap between compact operator panels and full PC-based SCADA systems.

The 6AV6446-3AA41-3BY3 variant is equipped with a touch-screen interface and supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet, enabling flexible integration into existing automation architectures. The panel runs on the Windows CE operating system and is configured using Siemens WinCC flexible engineering software. It provides sufficient onboard memory for complex visualization projects, supports recipe management, trend displays, alarm logging, and can handle a large number of process tags.

The MP 370 is widely deployed in the automotive, food and beverage, packaging, and general manufacturing industries where a reliable and feature-rich operator interface is required at the machine level. Its compatibility with Siemens S7-300 and S7-400 PLCs, as well as third-party controllers via standard protocols, makes it a versatile choice for both OEM machine builders and system integrators. The robust industrial housing and wide operating temperature range ensure reliable operation in demanding shop-floor environments.

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
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45), RS-422/485
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), IP20 (rear)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC 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 physical communication cable and connectors. Verify MPI or PROFIBUS address settings on both the panel and PLC. Ensure the PLC is in RUN mode and the network is correctly configured in WinCC flexible.
Event ID: 10001: Communication timeout. The HMI panel did not receive a response from the PLC within the configured timeout period.
Check network load and cable integrity. Increase the communication timeout value in the WinCC flexible project settings. Verify PLC program is not blocking communication.
Event ID: 20000: Project download error. A fault occurred during the transfer of the WinCC flexible project to the panel.
Verify the transfer cable or Ethernet connection is secure. Ensure the correct COM port or IP address is configured in WinCC flexible. Restart the panel and retry the download.
Event ID: 40000: Tag read error. The HMI panel is unable to read the value of a configured process tag from the PLC.
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 data area.
Event ID: 40001: Tag write error. The HMI panel is unable to write a value to the configured PLC tag.
Check that the target PLC memory area is not write-protected. Verify the tag address configuration in WinCC flexible. Ensure the PLC is in a state that allows external write access.
Event ID: 50000: Internal device error. A hardware or firmware fault has been detected within the HMI panel.
Perform a panel restart. If the error persists, perform a factory reset via the Control Panel in Windows CE. If the fault continues, the unit may require repair or replacement of internal components.
Event ID: 60000: Memory error. Insufficient memory available to load or run the current project.
Reduce the size of the WinCC flexible project by removing unused images, graphics, or tags. Ensure no unnecessary background applications are running on the Windows CE environment.

Frequently Asked Questions

Which engineering software is used to configure the MP 370?

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

Which PLCs are compatible with the SIMATIC MP 370?

The MP 370 is compatible with Siemens S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP. It also supports Ethernet-based communication with S7 controllers and can connect to third-party PLCs via configurable serial protocols.

What is the supply voltage for the 6AV6446-3AA41-3BY3?

The panel operates on 24 V DC supply voltage. Ensure the power supply is rated for the panel's maximum power consumption of approximately 30 W.

Does the MP 370 support recipe management and data logging?

Yes, the MP 370 supports recipe management, trend displays, alarm logging, and data archiving as standard functions within WinCC flexible projects.

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 spray may be present.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Verify the supply polarity is correct and the voltage is within the specified range. Inspect the internal fuse if accessible.

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

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 touch surface. Attempt a touch screen recalibration via the Windows CE Control Panel.

Clean the touch surface with a soft, dry cloth. Perform touch screen recalibration in the Control Panel under Siemens HMI settings. If the touch screen remains unresponsive, the touch digitizer layer may need to be replaced.

HMI cannot establish communication with the PLC

Verify the MPI or PROFIBUS cable is correctly connected and undamaged. Check that the bus address configured on the panel matches the project settings and does not conflict with other nodes on the network.

Correct any address conflicts and ensure termination resistors are properly placed at both ends of the PROFIBUS or MPI network. Re-download the WinCC flexible project after correcting communication parameters.

Panel freezes or restarts unexpectedly

Check the supply voltage for ripple or voltage drops under load. Review the Windows CE event log for software exceptions. Determine if the issue occurs during specific operator actions or at random intervals.

Ensure a stable, regulated 24 V DC power supply is used. Update the panel firmware to the latest version available from Siemens. If the problem persists, perform a factory reset and re-download the project.

Project download fails or transfer is interrupted

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 antivirus software is blocking the WinCC flexible transfer function.

Set the panel to Transfer mode via the Start Center. Disable firewall exceptions for WinCC flexible on the engineering PC. Use a direct Ethernet connection rather than a network switch if possible to avoid network-related interruptions.

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