Siemens 6AV6446-1AA40-2BA4 SIMATIC MP 370

Name: Siemens 6AV6446-1AA40-2BA4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA40-2BA4
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1AA40-2BA4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-2BA4 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level visualization and operator control tasks. This unit features a 12-inch TFT display and is part of the SIMATIC MP 370 series, which provides high-performance panel functionality for industrial automation environments. It is manufactured by Siemens and represents a mid-to-upper tier panel in the SIMATIC HMI portfolio.

The MP 370 (6AV6446-1AA40-2BA4) is equipped with a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch screen operation. It runs on WinCC flexible as its configuration software and includes interfaces such as MPI/PROFIBUS DP, RS-422/RS-485, USB, and Ethernet (depending on variant). The panel operates on 24 V DC supply voltage and provides a robust aluminum front bezel with IP65 protection rating on the front face, making it suitable for panel-mount installation in industrial cabinets.

The SIMATIC MP 370 is widely used in manufacturing, automotive, food and beverage, chemical, and process industries where a reliable and feature-rich operator interface is required. Its compatibility with Siemens S7-300 and S7-400 PLCs via MPI/PROFIBUS DP, as well as third-party controllers via serial interfaces, makes it a versatile choice for both OEM machine builders and system integrators. The large display area and touch operation allow operators to monitor complex process visualizations and interact with control systems efficiently.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Type	TFT Color LCD
Display Colors	256 colors
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485, USB, Ethernet
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 the HMI panel and the connected PLC or controller. The configured connection cannot be established.
Check MPI/PROFIBUS DP or Ethernet cable connections. Verify PLC address settings and baud rate configuration in WinCC flexible. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to the PLC was interrupted during runtime operation.
Check physical cable integrity and connector seating. Verify network topology and termination resistors on PROFIBUS. Restart the HMI panel and PLC if the connection is not restored automatically.
Event ID: 20000: Tag read error. The HMI panel cannot read the value of a configured tag from the PLC.
Verify the tag address exists in the PLC program and the data block is not deleted. Check access permissions and ensure the PLC program is consistent with the HMI project configuration.
Event ID: 20001: Tag write error. The HMI panel cannot write a value to the configured PLC tag.
Check that the target address in the PLC is writable and not write-protected. Verify the PLC is in RUN mode and the tag address is correctly configured in WinCC flexible.
Event ID: 40000: Project download error or project data on the panel is corrupted or incompatible.
Re-download the WinCC flexible project to the panel using a USB connection or Ethernet. Ensure the WinCC flexible version used for the project matches the firmware version on the panel.
Event ID: 50000: Internal device error or hardware fault detected on the HMI panel.
Perform a panel reset. If the error persists, check the 24 V DC power supply for stability. Contact Siemens technical support or arrange for hardware repair/replacement.
Event ID: 60000: Insufficient memory on the HMI panel. The runtime project exceeds available memory resources.
Reduce the size of the WinCC flexible project by optimizing graphics, reducing the number of screens, or compressing image files. Ensure no unnecessary background applications are running.

Frequently Asked Questions

What PLC systems is the SIMATIC MP 370 (6AV6446-1AA40-2BA4) compatible with?

The MP 370 is compatible with Siemens S7-300 and S7-400 PLCs via MPI/PROFIBUS DP. It also supports communication with third-party controllers via RS-422/RS-485 serial interfaces and Ethernet using standard protocols.

What software is used to configure the SIMATIC MP 370?

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

What is the supply voltage for the 6AV6446-1AA40-2BA4?

The panel operates on a 24 V DC supply voltage. Ensure the power supply is stable and within the specified tolerance range to avoid operational issues.

What is the IP protection rating of the MP 370 front panel?

The front face of the MP 370 achieves IP65 protection, making it resistant to dust ingress and low-pressure water jets. The rear of the unit is rated IP20.

Can the firmware on the SIMATIC MP 370 be updated?

Yes, the firmware can be updated using a USB memory stick or via Ethernet connection using the ProSave tool provided by Siemens. Always ensure the firmware version is compatible with the WinCC flexible project version being used.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for any blown internal fuses. Observe whether the backlight is on but the screen is dark, or whether there is no power at all.

Ensure the 24 V DC supply is within tolerance. If the backlight is faulty, the display assembly may need replacement. If there is no power indication, check the internal fuse and power supply board. Replace defective components as necessary.

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, scratches, or contamination on the touch surface.

Perform a touch screen calibration via the Start Center menu. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the touch screen overlay may need to be replaced.

HMI panel cannot establish communication with the PLC

Verify the MPI or PROFIBUS DP address configured on the panel matches the network settings. Check cable connections, termination resistors, and baud rate settings. Use a PROFIBUS diagnostic tool to check network integrity.

Correct any address or baud rate mismatches in the WinCC flexible project and re-download. Replace damaged cables or connectors. Ensure proper bus termination at both ends of the PROFIBUS network.

Panel repeatedly restarts or crashes during runtime

Check the 24 V DC power supply for voltage dips or instability using a multimeter or oscilloscope. Review the WinCC flexible project for memory overload or script errors that may cause runtime exceptions.

Stabilize the power supply and ensure it is adequately rated for the panel's power consumption. Optimize the WinCC flexible project to reduce memory usage. Update the panel firmware to the latest compatible version.

Project download fails or panel does not accept new project

Check the USB connection or Ethernet link between the engineering PC and the panel. Verify that the WinCC flexible version on the PC is compatible with the panel firmware version. Ensure the panel is in transfer mode.

Switch the panel to transfer mode via the Start Center. Use the correct transfer channel (USB or Ethernet) as configured in WinCC flexible. If version mismatch is detected, update the panel firmware using ProSave before re-downloading the project.

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