Siemens 6AV6446-1BA41-0BB3 SIMATIC MP 370

Name: Siemens 6AV6446-1BA41-0BB3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1BA41-0BB3
Price: 4546.00 EUR
Availability: InStock

€ 4.546,00

Condition

Clear

SKU: 6AV6446-1BA41-0BB3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1BA41-0BB3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding visualization and operator control tasks in industrial automation environments. This panel features a 12-inch TFT display and is part of Siemens' high-performance Multi Panel series, which bridges the gap between standard operator panels and full PC-based systems. It is intended for use as a stationary operator interface in machine and plant automation.

The MP 370 (6AV6446-1BA41-0BB3) is equipped with a touch-sensitive screen and supports a wide range of communication interfaces including MPI, PROFIBUS DP, and Ethernet, enabling integration with SIMATIC S7 PLCs and other controllers. The panel runs on Windows CE and supports WinCC flexible runtime software for flexible project configuration. It offers onboard flash memory and supports external storage via CompactFlash cards, providing sufficient capacity for complex visualization projects with graphics, trends, and alarm management.

The SIMATIC MP 370 is widely deployed in manufacturing, automotive, food and beverage, chemical, and process industries where a robust and versatile HMI solution is required. Its compatibility with the SIMATIC S7-300 and S7-400 controller families makes it a standard choice for machine builders and system integrators working within the Siemens automation ecosystem. The panel's industrial-grade construction and broad communication capability make it suitable for both standalone machine control panels and distributed plant visualization systems.

Technical Specifications

Display Size	12 inch
Display Type	TFT color LCD
Display Colors	256 colors
Display Resolution	800 x 600 pixels (SVGA)
Touch Technology	Resistive touchscreen
Input Voltage	24 V DC
Power Consumption	Approx. 30 W
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
Communication Interfaces	MPI, PROFIBUS DP, Ethernet (RJ45), RS-422/RS-485
Operating System	Windows CE
Memory	12 MB Flash (onboard), CompactFlash slot
Certifications	CE, UL, cULus
Mounting	Panel mounting

Common Error Codes & System Events

Event ID: 1000: Communication error between HMI panel and PLC controller
Check MPI/PROFIBUS cable connections, verify correct station address configuration, and confirm PLC is in RUN mode.
Event ID: 1003: Connection to PLC lost or timeout during runtime
Verify physical communication cable integrity, check baud rate settings on both HMI and PLC, and restart the HMI project.
Event ID: 10000: System error during project download or transfer
Check PC-to-panel transfer cable, verify WinCC flexible project compatibility with panel firmware version, and retry transfer.
Event ID: 1004: Tag read/write error — variable cannot be accessed
Verify the PLC address referenced in the HMI tag table is correct and accessible. Check PLC program for the corresponding data block or variable.
Event ID: 2000: Internal system fault or runtime application crash
Perform a warm restart of the panel. If the fault persists, reload the WinCC flexible project or update the panel firmware.
Event ID: 3000: Alarm buffer overflow — too many pending alarms
Acknowledge and clear active alarms. Review alarm configuration to reduce simultaneous alarm triggers or increase alarm buffer size in the project settings.
Event ID: 1700: Backup battery low or battery failure
Replace the internal backup battery. Refer to the MP 370 operating instructions for battery replacement procedure to avoid data loss.

Frequently Asked Questions

What PLC families are compatible with the SIMATIC MP 370 (6AV6446-1BA41-0BB3)?

The MP 370 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. Ethernet-based communication with S7 controllers is also supported using the integrated RJ45 port.

What software is used to configure and program the MP 370 panel?

The MP 370 is configured using Siemens WinCC flexible software. Projects are created on a PC and downloaded to the panel via a data transfer cable, CompactFlash card, or Ethernet connection.

What is the display resolution and screen size of the 6AV6446-1BA41-0BB3?

This panel features a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports 256 colors.

Can the MP 370 panel be used with third-party controllers or non-Siemens PLCs?

Yes, the MP 370 supports communication drivers for a range of third-party controllers via its serial interfaces (RS-422/RS-485), including Allen-Bradley, Mitsubishi, and Modbus-compatible devices, depending on the WinCC flexible driver configuration.

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

The front panel of the MP 370 carries an IP65 protection rating, making it suitable for installation in environments where dust and water spray may be present.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for blown internal fuse. Verify the power supply unit output is stable and within tolerance.

Ensure the 24 V DC supply is within the specified range and capable of supplying sufficient current. Replace the internal fuse if blown. If the backlight has failed, the panel may require backlight or inverter board replacement.

Touchscreen does not respond or responds inaccurately

Check whether the touch input is consistently offset or completely unresponsive. Determine if the issue is mechanical (damaged overlay) or calibration-related.

Perform a touchscreen recalibration via the panel's Control Panel settings in Windows CE. If the touch overlay is physically damaged, the touchscreen assembly will need to be replaced.

Panel fails to communicate with the SIMATIC S7 PLC

Verify MPI or PROFIBUS cable connections and termination resistors. Check that the HMI station address does not conflict with other nodes on the network. Confirm baud rate settings match on both devices.

Correct any address conflicts, ensure proper cable termination at both ends of the bus, and verify matching baud rate settings in both the WinCC flexible project and the PLC hardware configuration.

WinCC flexible project fails to download to the panel

Check the transfer cable connection between PC and panel. Verify the panel is in Transfer mode. Confirm the WinCC flexible version is compatible with the panel firmware version.

Switch the panel to Transfer mode via the Start Center. Update the panel firmware if there is a version mismatch. Use a known-good transfer cable or switch to Ethernet-based transfer if available.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC power supply for voltage dips or instability under load. Review the WinCC flexible project for memory-intensive scripts or excessive tag polling rates.

Stabilize the power supply and ensure it is adequately rated for the panel's power consumption. Optimize the WinCC flexible project by reducing update cycles and script complexity. Update the panel firmware to the latest available version.

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