Siemens 6AV6446-3AA40-0AY3 MP370

€ 2.995,00

SKU: 6AV6446-3AA40-0AY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA40-0AY3 is a Multi Panel MP370 belonging to Siemens' SIMATIC HMI Multi Panel series. This unit is a high-performance operator panel designed for demanding industrial visualization and control tasks, offering a 12-inch TFT display with touch screen functionality. It is part of the SIMATIC HMI product line, which integrates seamlessly with Siemens automation systems including S7 PLCs and STEP 7 engineering environments.

The MP370 (6AV6446-3AA40-0AY3) features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports 256 colors. It is equipped with a resistive touch screen interface and runs on the Windows CE operating system, providing a flexible platform for SCADA and HMI applications developed with WinCC flexible. The panel supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), and includes onboard memory for project storage as well as a CompactFlash card slot for expanded storage. The operating voltage is 24 V DC, and the unit carries CE and UL certifications.

The SIMATIC MP370 is widely used in manufacturing automation, process control, and machine building applications across industries such as automotive, food and beverage, chemical processing, and packaging. Its combination of a large touch display, robust communication options, and Windows CE-based flexibility makes it suitable for complex visualization tasks requiring dynamic graphics, alarm management, and data logging. The panel is typically mounted in control cabinet doors or operator stations where a reliable and responsive HMI interface is required.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Display Type	TFT color LCD
Touch Technology	Resistive touch screen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-232
Memory	12 MB internal project memory
Storage Expansion	CompactFlash card slot
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 HMI Multi Panel MP370

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 or cannot be established.
Check the physical communication cable and connectors. Verify MPI/PROFIBUS address settings and baud rate configuration. Confirm the PLC is powered and in RUN mode.
Event ID: 10001: Timeout error on the communication link. The HMI did not receive a response from the PLC within the expected time frame.
Check network cabling and termination resistors on PROFIBUS. Reduce communication load or increase timeout settings in WinCC flexible project configuration.
Event ID: 20000: Project download error. The project transfer from the engineering PC to the HMI panel failed or was interrupted.
Verify the transfer cable connection and PC communication settings. Ensure the panel is in Transfer mode before initiating download. Check available memory on the panel.
Event ID: 40000: Tag read/write error. A configured tag could not be read from or written to the connected controller.
Verify the tag address configuration in the WinCC flexible project. Confirm the PLC data block or memory area referenced by the tag exists and is accessible.
Event ID: 50000: System memory low warning. The available runtime memory on the HMI panel is critically low, which may affect panel performance.
Reduce the number of active screens or objects. Optimize the project by removing unused images or scripts. Consider using a CompactFlash card for extended storage.
Event ID: 60000: Screen object error. A configured screen object could not be rendered or displayed correctly due to a configuration inconsistency.
Review the affected screen in WinCC flexible for misconfigured objects or missing resources. Recompile and re-download the project to the panel.
Event ID: 70000: Alarm buffer overflow. The number of pending alarms has exceeded the alarm buffer capacity of the HMI panel.
Acknowledge and clear active alarms. Review alarm configuration to reduce unnecessary alarm triggers. Increase alarm buffer size in the WinCC flexible project settings if possible.

Frequently Asked Questions

What communication interfaces does the MP370 6AV6446-3AA40-0AY3 support?

The MP370 supports MPI, PROFIBUS DP, Ethernet (TCP/IP), and RS-232 interfaces, allowing connectivity to a wide range of Siemens S7 PLCs and third-party controllers.

Which engineering software is used to program the MP370?

The MP370 is configured and programmed using Siemens WinCC flexible, which provides a comprehensive environment for creating HMI screens, alarms, tags, and communication configurations.

What operating system does the MP370 run on?

The MP370 runs on Microsoft Windows CE, which provides the runtime environment for WinCC flexible HMI applications.

Can the MP370 be connected to a Siemens S7-300 or S7-400 PLC?

Yes, the MP370 can communicate directly with S7-300 and S7-400 PLCs via MPI or PROFIBUS DP, and also via Ethernet using the appropriate communication modules.

What is the storage expansion option available on this panel?

The MP370 includes a CompactFlash card slot that can be used to expand project storage capacity or for data logging and recipe management.

Troubleshooting

Display remains blank after power on

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

Correct any power supply issues and ensure stable 24 V DC is provided. If the backlight has failed, the backlight inverter or the display assembly may need replacement. If the panel shows no signs of life, the internal power supply board may require repair or replacement.

Touch screen does not respond or responds inaccurately

Attempt to recalibrate the touch screen through the panel's Start Center or Control Panel settings. Check for physical damage or contamination on the touch surface.

Perform a touch screen calibration via the Windows CE Control Panel. Clean the touch surface with a soft, dry cloth. If calibration does not resolve the issue, the resistive touch overlay may be worn or damaged and will require replacement.

HMI cannot establish communication with the PLC

Verify the communication cable type and wiring. Check the MPI or PROFIBUS address configured on both the HMI and the PLC. Use the panel's diagnostic tools to check the communication status.

Correct address conflicts and ensure the baud rate matches on all devices on the bus. Replace the communication cable if damaged. Verify PROFIBUS termination resistors are correctly placed at both ends of the bus.

Project transfer from PC to panel fails

Confirm the panel is set to Transfer mode via the Start Center. Check the transfer cable connection and verify the correct COM port or Ethernet IP address is configured in WinCC flexible transfer settings.

Switch the panel to Transfer mode before initiating the download. Use a known-good MPI/PROFIBUS or Ethernet cable. Ensure the PC firewall is not blocking the transfer and that the correct transfer channel is selected in WinCC flexible.

Panel reboots unexpectedly or freezes during operation

Check the supply voltage for instability or voltage drops under load. Review the project for memory-intensive scripts or excessive screen object counts that may overload the panel's CPU.

Stabilize the 24 V DC power supply and ensure adequate current capacity. Optimize the WinCC flexible project by reducing script complexity and the number of simultaneous active objects. If the issue persists, a firmware update or hardware repair may be required.

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