Siemens 6AV6446-3AA41-2BY3 SIMATIC MP 370

Name: Siemens 6AV6446-3AA41-2BY3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-3AA41-2BY3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-3AA41-2BY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA41-2BY3 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 the SIMATIC MP 370 series, which provides high-performance operator interface capabilities for industrial automation environments. It is manufactured by Siemens and represents a mid-to-upper tier panel PC solution within the SIMATIC HMI portfolio.

The MP 370 panel is equipped with a 12" TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports both touch and key operation depending on the variant. It runs on Microsoft Windows CE and is compatible with Siemens WinCC flexible runtime software, enabling flexible visualization and control configurations. Communication interfaces include MPI/PROFIBUS DP and Ethernet (10/100 Mbit/s), allowing integration into a wide range of Siemens and third-party automation networks. The unit supports USB ports for peripherals and data transfer, and includes a CompactFlash card slot for extended memory and project storage.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant environments where robust and reliable HMI solutions are required. Its compatibility with SIMATIC S7 PLCs and support for WinCC flexible make it suitable for complex visualization tasks involving multiple screens, trend displays, alarm management, and recipe handling. The panel's industrial-grade construction and broad communication capability make it appropriate for both standalone machine control and networked SCADA-level applications.

Technical Specifications

Display Size	12 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors (TFT)
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI/PROFIBUS DP, Ethernet 10/100 Mbit/s, USB
Memory	CompactFlash card slot for extended storage
Operating System	Windows CE
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
Series/Product Family	SIMATIC MP 370
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 100001: Configuration error detected during project download or startup
Verify the WinCC flexible project configuration and re-download the project to the panel. Check for version compatibility between the engineering software and the panel runtime.
Event ID: 110000: Communication connection to PLC lost or unavailable
Check MPI/PROFIBUS DP or Ethernet cabling and connector integrity. Verify PLC address settings and ensure the PLC is in RUN mode. Check network configuration in WinCC flexible.
Event ID: 120001: Tag read/write error — PLC tag could not be accessed
Verify the tag address configuration in the WinCC flexible project. Confirm the PLC program contains the referenced data block or memory address. Check communication link status.
Event ID: 130001: Recipe data error — recipe record could not be read or written
Check the recipe configuration in WinCC flexible. Ensure sufficient memory is available on the CompactFlash card. Verify that the target PLC data area is correctly mapped.
Event ID: 140001: Alarm buffer overflow — too many pending alarms
Acknowledge and clear existing alarms. Review alarm configuration to reduce unnecessary alarm triggers. Consider increasing the alarm buffer size in the WinCC flexible project settings.
Event ID: 150001: System memory low — available runtime memory is insufficient
Reduce the complexity of the active screen or project. Clear unnecessary data from runtime memory. Consider optimizing the WinCC flexible project to reduce memory footprint.
Event ID: 160001: CompactFlash card not detected or read/write failure
Check that the CompactFlash card is properly seated in the slot. Replace the card if it is faulty. Ensure the card is formatted correctly and has sufficient free space.

Frequently Asked Questions

What software is required to program and configure the MP 370?

The MP 370 is configured using Siemens WinCC flexible engineering software. The project is then downloaded to the panel via MPI, PROFIBUS DP, Ethernet, or USB connection.

Which PLCs are compatible with the SIMATIC MP 370?

The MP 370 is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. Ethernet-based communication also allows connectivity to S7 PLCs with Ethernet modules and, via drivers, to third-party controllers.

What is the supply voltage for the 6AV6446-3AA41-2BY3?

The panel operates on 24 V DC supply voltage, which is standard for SIMATIC HMI panels in industrial cabinet installations.

Does the MP 370 support both touch and key operation?

The MP 370 series is available in touch-only and touch-and-key variants. The specific variant of the 6AV6446-3AA41-2BY3 features a resistive touchscreen interface for operator input.

Can the MP 370 be used as a replacement for older SIMATIC OP/TP panels?

Yes, the MP 370 running WinCC flexible can be used to replace older SIMATIC OP and TP panels. Project migration tools within WinCC flexible assist in converting legacy ProTool projects to the WinCC flexible format.

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. Inspect the internal fuse if accessible.

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

Panel does not communicate with the S7 PLC via MPI/PROFIBUS

Verify the MPI/PROFIBUS cable connections at both the panel and PLC. Check that the bus termination resistors are correctly placed at both ends of the bus. Confirm the MPI address configured in WinCC flexible matches the panel hardware setting.

Correct any wiring faults and ensure proper bus termination. Adjust the MPI/PROFIBUS address in the panel startup menu or WinCC flexible project to match the network configuration. Replace the cable if continuity testing reveals a fault.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touchscreen using the calibration utility accessible from the Windows CE control panel or the panel startup menu. Check for physical damage or contamination on the screen surface.

Perform a full touchscreen recalibration. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the touchscreen overlay or controller board may need to be replaced.

WinCC flexible project fails to download to the panel

Check the communication interface being used (USB, Ethernet, or MPI). Verify that the PC and panel are on the same network or correctly connected. Confirm that the WinCC flexible version is compatible with the panel firmware version.

Update the panel firmware to match the WinCC flexible engineering software version. Use a direct USB or Ethernet connection for the download. Ensure no firewall or antivirus software is blocking the transfer on the engineering PC.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or instability using a multimeter or oscilloscope. Review the WinCC flexible project for memory-intensive screens or scripts that may cause runtime overload.

Stabilize the power supply by adding a buffer capacitor or UPS module. Optimize the WinCC flexible project by reducing script complexity and screen object count. If the issue persists, the panel may require hardware inspection for failing capacitors or memory components.

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