Siemens 6AV6446-4AA40-0AY3 SIMATIC MP 370

Name: Siemens 6AV6446-4AA40-0AY3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-4AA40-0AY3
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-4AA40-0AY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-4AA40-0AY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization tasks. This panel features a 12-inch TFT display and is part of Siemens' high-performance operator panel range, offering robust local human-machine interface capabilities for industrial automation environments. It is engineered to integrate seamlessly with Siemens SIMATIC S7 and S5 controller families as well as third-party PLCs.

The MP 370 panel is equipped with a high-resolution 12-inch TFT color display with 256 colors and a resistive touchscreen interface, allowing intuitive operator interaction. It supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling flexible integration into various network architectures. The panel runs on Windows CE and is configurable via Siemens WinCC flexible engineering software, supporting project memory via CompactFlash card. It provides a USB interface for peripherals and data transfer, and includes an RS-232/RS-422/RS-485 serial interface for additional connectivity options.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant environments where reliable operator control and process visualization are required at the machine level. Its multi-protocol communication capability makes it suitable for heterogeneous automation environments where both Siemens and third-party controllers are present. The panel's robust industrial housing and wide operating temperature range make it appropriate for installation in control cabinets and on machine fronts in demanding production settings.

Technical Specifications

Display Size	12 inch
Display Type	TFT color LCD
Display Colors	256 colors
Display Resolution	640 x 480 px (VGA)
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-232/RS-422/RS-485, USB
Operating System	Windows CE
Configuration Software	WinCC flexible
Memory 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 Rating (Front)	IP65
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC controller.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both the panel and the PLC.
Event ID: 10001: Connection to the PLC was interrupted during runtime.
Inspect communication cables for damage. Verify network settings and PLC program is running. Re-establish connection and check for electromagnetic interference on the bus.
Event ID: 20000: Project download failed or project data is corrupted on the panel.
Re-download the WinCC flexible project to the panel via Ethernet or USB. Verify the project was compiled without errors before transfer. Check available memory on the CompactFlash card.
Event ID: 40000: System memory low warning. Available runtime memory is insufficient.
Reduce the number of active alarms or logged data. Optimize the project to reduce memory usage. Consider using a higher-capacity CompactFlash card.
Event ID: 50000: Internal device error or hardware fault detected on the panel.
Perform a panel restart. If the fault persists, perform a factory reset via the Control Panel in Windows CE. Contact Siemens technical support or arrange for hardware inspection and repair.
Event ID: 60000: Alarm buffer overflow. The number of pending alarms exceeds the buffer capacity.
Acknowledge and clear existing alarms. Review the alarm configuration in WinCC flexible to increase buffer size or implement alarm archiving to an external storage medium.
Event ID: 70000: Tag value out of configured limit range.
Check the process value being written to the tag. Verify PLC data source and scaling configuration in the HMI project. Adjust high/low limit settings in WinCC flexible if required.

Frequently Asked Questions

What communication protocols does the SIMATIC MP 370 (6AV6446-4AA40-0AY3) support?

The MP 370 supports MPI, PROFIBUS DP, Ethernet TCP/IP, RS-232/RS-422/RS-485, and USB interfaces, allowing connection to Siemens S7/S5 controllers as well as third-party PLCs.

Which engineering software is used to configure the MP 370 panel?

The MP 370 is configured using Siemens WinCC flexible software. Projects are compiled in WinCC flexible and downloaded to the panel via Ethernet, USB, or serial connection.

What is the display size and resolution of the 6AV6446-4AA40-0AY3?

The panel features a 12-inch TFT color display with a resolution of 640 x 480 pixels (VGA) and supports 256 colors.

What is the supply voltage required for the MP 370 panel?

The MP 370 requires a 24 V DC power supply for operation.

Can the MP 370 be used with non-Siemens PLCs?

Yes, the MP 370 supports communication drivers for various third-party controllers via its RS-232/RS-422/RS-485 serial interfaces and Ethernet port, in addition to native Siemens MPI and PROFIBUS DP connectivity.

Troubleshooting

Display remains blank after power on

Check that 24 V DC supply voltage is present at the power connector. Measure voltage at the panel terminals to confirm correct polarity and adequate current supply.

Ensure the power supply delivers stable 24 V DC with sufficient current capacity. Replace the power supply if voltage is absent or unstable. If voltage is correct and display remains blank, the internal backlight or display module may require replacement.

Touchscreen does not respond or registers incorrect touch positions

Verify the touchscreen surface is clean and free of moisture or debris. Check if the touch calibration has been disrupted, which can occur after a firmware update or factory reset.

Perform a touchscreen recalibration via the Windows CE Control Panel on the MP 370. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the resistive touchscreen overlay may be damaged and require replacement.

Panel fails to communicate with the connected PLC

Verify the MPI or PROFIBUS address configured in the WinCC flexible project matches the PLC settings. Check cable connections, bus termination, and cable integrity.

Correct any address mismatches in the HMI project and re-download to the panel. Replace damaged communication cables and ensure proper bus termination resistors are installed at both ends of the PROFIBUS or MPI network.

Project download to the panel fails or is interrupted

Check the Ethernet or USB connection between the engineering PC and the panel. Verify that the panel is in transfer mode and that the WinCC flexible project has been compiled without errors.

Switch the panel to transfer mode via the Start Center menu. Retry the download over a direct Ethernet connection. Ensure the CompactFlash card has sufficient free space and is not write-protected or corrupted.

Panel repeatedly restarts or freezes during operation

Check for unstable 24 V DC supply voltage, particularly voltage dips caused by other loads on the same supply circuit. Review the alarm and event log for recurring system error events.

Provide a dedicated, regulated 24 V DC supply to the panel. If the issue persists, perform a factory reset via the Windows CE Control Panel and re-download the project. Persistent hardware faults may require internal component inspection or panel replacement.

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