Siemens 6AV6446-1AA40-2BA5 SIMATIC MP 370

Name: Siemens 6AV6446-1AA40-2BA5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA40-2BA5
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1AA40-2BA5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-2BA5 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization tasks. This panel is part of Siemens' high-performance operator panel series, offering a 12-inch TFT display and running the Windows CE operating system with WinCC flexible runtime. It is intended for use as a human-machine interface in industrial automation environments where robust and reliable visualization is required.

The MP 370 features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports both touch and key operation depending on the variant. It is equipped with multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (10/100 Mbit/s), enabling flexible integration into Siemens S7 and other automation networks. The panel includes 12 MB of user memory for project data and supports USB ports for data transfer and peripheral connection. The unit operates on 24 V DC supply and is rated IP65 on the front face for protection against dust and water ingress.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant automation. Its combination of touch and key operation, broad communication capability, and compatibility with WinCC flexible engineering software makes it suitable for complex HMI applications requiring rich graphical displays and reliable operator interaction. The panel is commonly used in control cabinets and machine front panels where a large, clear display and multi-protocol connectivity are essential.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Display Type	TFT LCD
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
User Memory	12 MB
Communication Interface	MPI, PROFIBUS DP, Ethernet 10/100 Mbit/s, RS-422/485
USB Ports	2 x USB (Type A)
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
IP Rating (Rear)	IP20
Operating System	Windows CE
Certifications	CE, UL, cUL
Mounting	Panel mounting

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC or controller. The configured connection cannot be established.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify the PLC address and communication parameters in the WinCC flexible project match the hardware configuration.
Event ID: 10001: Connection to the PLC was interrupted during runtime after a previously successful connection.
Inspect communication cables for damage or loose connectors. Check PLC operating state and ensure the network is free of excessive bus load or address conflicts.
Event ID: 20000: Project download error. The project could not be transferred to the panel successfully.
Verify the transfer cable or Ethernet connection between the engineering PC and the panel. Ensure the panel is in transfer mode and that the WinCC flexible project is compiled without errors before retransfer.
Event ID: 40000: Tag read/write error. A configured tag could not be read from or written to the PLC.
Check that the tag address in the WinCC flexible project corresponds to a valid and accessible address in the PLC program. Verify PLC is in RUN mode and the data block or memory area exists.
Event ID: 70010: System memory low. Available runtime memory on the panel is critically low.
Reduce the number of active screens, limit the use of large graphics or animations, and restart the panel. Consider optimizing the project to reduce memory usage.
Event ID: 110000: Recipe data error. A recipe could not be read or written correctly.
Check the recipe configuration in WinCC flexible for correct tag assignments and data types. Verify that sufficient memory is available on the panel for recipe storage.
Event ID: 130000: Alarm logging error. Alarm or event data could not be written to the configured storage location.
Check the configured storage path and ensure the target storage medium (USB or internal memory) is available and has sufficient free space.

Frequently Asked Questions

What communication interfaces are available on the 6AV6446-1AA40-2BA5?

The MP 370 12-inch panel provides MPI, PROFIBUS DP, Ethernet (10/100 Mbit/s), and RS-422/485 interfaces, allowing connection to Siemens S7 PLCs and third-party controllers via various protocols.

Which engineering software is used to configure this panel?

The 6AV6446-1AA40-2BA5 is configured using Siemens WinCC flexible engineering software. Projects are created on a PC and downloaded to the panel via Ethernet or MPI/PROFIBUS connection.

Is this panel compatible with Siemens S7-300 and S7-400 PLCs?

Yes, the MP 370 supports direct communication with Siemens S7-300 and S7-400 PLCs via MPI or PROFIBUS DP, and also supports S7 communication over Ethernet using the integrated network interface.

What is the operating voltage for the 6AV6446-1AA40-2BA5?

The panel operates on a 24 V DC supply voltage. It is important to ensure a stable and adequately rated 24 V DC power supply is used to prevent operational issues.

What is the front panel protection rating of this HMI?

The front face of the MP 370 is rated IP65, providing complete protection against dust ingress and protection against low-pressure water jets, making it suitable for installation in industrial control panels.

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 tolerance. Inspect the internal fuse if accessible.

Ensure the 24 V DC supply is stable and correctly wired. If the supply is confirmed good but the display remains blank, the internal power supply board or backlight inverter may be faulty and require replacement.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touch screen via the panel's Start Center or control panel settings in Windows CE. Check for physical damage or contamination on the screen surface.

Perform a touch screen calibration through the Windows CE control panel. Clean the screen surface with a soft, dry cloth. If calibration fails repeatedly, the touch sensor layer may be damaged and the display assembly may need replacement.

Panel cannot establish communication with the PLC

Verify the communication cable type and wiring between the panel and PLC. Check the MPI or PROFIBUS address settings on both the panel and PLC. Use a bus diagnostic tool to check for bus errors or address conflicts.

Correct any address mismatches in the WinCC flexible project and PLC hardware configuration. Replace the communication cable if damaged. Ensure bus termination resistors are correctly placed at both ends of the PROFIBUS or MPI network.

Project transfer from PC to panel fails

Confirm the panel is set to transfer mode via the Start Center. Check the Ethernet or MPI cable connection between the engineering PC and the panel. Verify the IP address or MPI address settings match in WinCC flexible transfer settings.

Set the correct transfer channel and address in WinCC flexible. Restart the panel in transfer mode and retry the download. If using Ethernet, ensure no firewall is blocking the transfer port on the engineering PC.

Panel reboots unexpectedly during operation

Check the 24 V DC supply for voltage drops or ripple, especially under load. Inspect the environment for excessive temperature or vibration. Review the Windows CE event log for software-related crash information.

Stabilize the power supply by using a dedicated, adequately rated 24 V DC source. Ensure the panel operating temperature does not exceed 50 °C. If the issue persists, the panel may require a firmware update or hardware inspection by a qualified repair technician.

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