Siemens 6AV6446-1BA40-1BA4 SIMATIC MP 370

Name: Siemens 6AV6446-1BA40-1BA4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1BA40-1BA4
Price: 2995.00 EUR
Availability: InStock

€ 2.995,00

Condition

Clear

SKU: 6AV6446-1BA40-1BA4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1BA40-1BA4 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization applications. This panel operates as a high-performance operator interface unit capable of running both WinCC flexible and, in some configurations, standard Windows-based SCADA applications. It is part of Siemens' established SIMATIC HMI panel range, offering a robust platform for industrial human-machine interface tasks.

The MP 370 features a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch screen operation. It is equipped with a 32-bit processor and runs on a Windows CE operating system, providing a stable and responsive runtime environment. Communication interfaces include PROFIBUS DP, MPI, and Ethernet (depending on variant), enabling integration with SIMATIC S7 PLCs and other automation systems. The unit includes a CF card slot for project storage and data logging, and supports USB ports for peripherals.

The SIMATIC MP 370 is widely deployed in manufacturing, automotive, food and beverage, and chemical processing industries where a combination of visualization, data acquisition, and operator control is required at the machine or line level. Its ability to run WinCC flexible runtime makes it suitable for complex HMI projects with large tag counts, trend displays, alarm management, and recipe handling. The panel's robust industrial housing and wide operating temperature range make it appropriate for installation in control cabinets in demanding production environments.

Technical Specifications

Display Size	12 inch
Display Type	TFT color
Display Resolution	800 x 600 pixels (SVGA)
Touch Technology	Resistive touch screen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	PROFIBUS DP, MPI, Ethernet (RJ45)
Memory	12 MB user memory (project)
Storage Slot	CompactFlash (CF) card slot
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
Certifications	CE, UL, cULus
Mounting	Panel mounting

Common Error Codes & System Events

Event ID: 040000: Configuration error detected during project download or startup. The project file may be corrupted or incompatible with the panel firmware version.
Re-download the project using WinCC flexible. Ensure the firmware version on the panel matches the version used to compile the project.
Event ID: 070000: Communication error on MPI or PROFIBUS DP interface. The panel cannot establish or maintain a connection to the configured PLC.
Check MPI/PROFIBUS cable connections and termination resistors. Verify the bus address and baud rate settings match those configured in the PLC and HMI project.
Event ID: 080000: Ethernet communication error. The panel cannot reach the configured PLC or network device via TCP/IP.
Verify Ethernet cable connection and IP address configuration on both the panel and the PLC. Check for network conflicts or firewall settings blocking communication.
Event ID: 100000: Tag read/write error. The panel is unable to read from or write to one or more configured PLC tags.
Confirm the PLC is in RUN mode and that the tag addresses in the HMI project match the actual PLC data blocks. Check communication link status.
Event ID: 110000: Recipe data error. A recipe record could not be read from or written to the configured storage location.
Check the CF card for available storage space and file system integrity. Re-download the project and verify recipe configuration in WinCC flexible.
Event ID: 120000: Data log error. The panel failed to write data log entries, possibly due to a full or missing CF card.
Insert or replace the CF card and ensure it has sufficient free space. Check data log configuration settings in the WinCC flexible project.
Event ID: 060000: Printer communication error. The panel cannot communicate with the configured printer.
Check the printer connection via USB or serial interface. Verify the correct printer driver is configured in the Control Panel settings on the MP 370.

Frequently Asked Questions

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

The MP 370 is programmed using Siemens WinCC flexible software. The project is compiled on a PC and transferred to the panel via Ethernet, MPI, or a CF card.

Which PLCs are compatible with the Siemens MP 370?

The MP 370 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP, and with S7-300/400 via Ethernet. It also supports communication with third-party controllers using standard protocols.

What is the operating voltage for the 6AV6446-1BA40-1BA4?

The panel operates on 24 V DC power supply, which is the standard supply voltage for SIMATIC HMI panels.

Can the MP 370 store data and projects on a memory card?

Yes, the MP 370 is equipped with a CompactFlash (CF) card slot that can be used for project storage, data logging, recipe storage, and firmware updates.

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

The front panel of the MP 370 achieves IP65 protection, making it suitable for installation in environments where dust and water jets 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 correct polarity. Inspect the internal fuse if accessible.

Ensure the 24 V DC supply is within tolerance (typically 19.2 V to 28.8 V DC). Replace the power supply if voltage is absent. If voltage is correct but display remains blank, the backlight or internal power board may require replacement.

Panel fails to communicate with the S7 PLC via MPI or PROFIBUS

Check the physical cable connections and verify that bus termination resistors are correctly placed at both ends of the bus. Confirm the MPI/PROFIBUS address and baud rate settings on both the panel and the PLC.

Correct any address conflicts, ensure baud rates match, and replace damaged cables. Use a PROFIBUS diagnostic tool to check bus integrity if the issue persists.

Touch screen does not respond or registers incorrect touch positions

Access the touch screen calibration utility via the Windows CE Control Panel on the MP 370. Check for physical damage or contamination on the touch surface.

Perform a touch screen recalibration through the panel's Control Panel. Clean the screen surface with a soft cloth. If calibration does not resolve the issue, the touch screen overlay may need replacement.

Project download fails or is interrupted during transfer

Check the communication link between the programming PC and the panel (Ethernet or MPI cable). Verify that WinCC flexible version matches the panel firmware version.

Update the panel firmware to match the WinCC flexible project version. Use a direct Ethernet connection rather than a network switch for more reliable transfer. Alternatively, transfer the project via a CF card.

Panel repeatedly restarts or shows a watchdog reset message

This may indicate a corrupted project file, insufficient memory, or a hardware fault. Check the CF card for errors and review the event log accessible via the panel's Start menu.

Re-download a freshly compiled project to the panel. Replace the CF card if file system errors are detected. If restarts continue without a project loaded, the panel hardware may require professional repair or replacement of the main board.

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