Siemens 6AV6446-1BA41-2BB4 SIMATIC MP 370

Name: Siemens 6AV6446-1BA41-2BB4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1BA41-2BB4
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1BA41-2BB4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1BA41-2BB4 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 Siemens' high-performance panel range, offering robust operator interface capabilities for industrial automation environments. The MP 370 series sits above the OP/TP 270 range and is intended for applications requiring larger display areas and expanded functionality.

The MP 370 12" variant features a color TFT display with 256-color support and a resolution of 800 x 600 pixels (SVGA). It supports both touch and key operation, providing flexibility in operator interaction. Communication interfaces include MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling integration with SIMATIC S7 PLCs and other controllers. The panel runs on WinCC flexible runtime and provides substantial project memory for complex visualization tasks, along with USB and CF card slots for data transfer and project backup.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, process industries, and packaging machinery where a larger HMI footprint is required. Its compatibility with SIMATIC S7-300 and S7-400 PLCs via MPI and PROFIBUS makes it a natural fit for existing Siemens automation architectures. The panel's robust construction and wide operating temperature range make it suitable for installation in industrial control cabinets and harsh production environments.

Technical Specifications

Display Size	12 inch
Display Type	TFT color
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Touch Technology	Resistive touch screen with function keys
Input Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Memory (Project)	12 MB flash memory
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, cUL
Series/Product Family	SIMATIC MP 370

Common Error Codes & System Events

Event ID: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been lost.
Check MPI/PROFIBUS cable connections and termination resistors. Verify the PLC address and baud rate settings match the HMI project configuration. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to PLC interrupted during runtime. Data exchange has stopped.
Inspect the communication cable for damage. Check network topology and bus termination. Restart the HMI panel and verify PLC communication parameters.
Event ID: 20000: Project download error. The project could not be transferred to the panel successfully.
Verify the PC-to-panel connection (MPI, Ethernet, or USB). Ensure WinCC flexible version is compatible with the panel firmware. Retry the transfer after restarting both devices.
Event ID: 40000: System memory low. Available runtime memory is insufficient for the current project.
Reduce the project size by optimizing graphics and scripts. Clear unnecessary log files and archived data from the panel memory or CF card.
Event ID: 50000: CF card not recognized or read/write error on the CompactFlash card.
Remove and reinsert the CF card. Check the card for damage or corruption using a PC. Replace the CF card if errors persist.
Event ID: 70000: Firmware update failed or firmware version mismatch detected.
Re-initiate the firmware update using ProSave or WinCC flexible. Ensure the correct firmware version for the MP 370 12" panel is used and that power is not interrupted during the update.
Event ID: 30000: Tag read/write error. A configured tag could not be read from or written to the PLC.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for address conflicts.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC MP 370?

The MP 370 is compatible with SIMATIC S7-300, S7-400, and S7-200 PLCs via MPI or PROFIBUS DP interfaces. It also supports Ethernet-based communication with S7 controllers and third-party systems via OPC or serial protocols.

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

The MP 370 is configured using Siemens WinCC flexible software. Projects are created on a PC and transferred to the panel via MPI, PROFIBUS, Ethernet, or USB connection.

Does the MP 370 support Ethernet communication?

Yes, the 6AV6446-1BA41-2BB4 includes an Ethernet interface supporting TCP/IP, allowing integration with SIMATIC S7 PLCs and SCADA systems over a standard network.

What is the input voltage requirement for this panel?

The MP 370 operates on 24 V DC supply voltage. Ensure a stable, regulated 24 V DC power supply with sufficient current capacity is used.

Can the MP 370 be used as a replacement for an OP 370 or TP 370?

The MP 370 combines the functionality of both operator panel (OP) and touch panel (TP) variants, making it a suitable replacement for OP 370 and TP 370 units, provided the project is adapted in WinCC flexible for the MP 370 hardware.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Verify the supply is within the specified range and delivering adequate current. Inspect the internal fuse if accessible.

Ensure the 24 V DC supply is stable and correctly connected. If the backlight has failed, the panel may require backlight or inverter board replacement. If the panel shows no signs of life, the internal power supply board may need to be serviced or replaced.

Touchscreen does not respond or is inaccurate

Determine whether the issue is a complete lack of response or positional inaccuracy. Check if the touch calibration has been disrupted or if the touch overlay is physically damaged.

Perform a touchscreen recalibration via the panel's Start Center or Control Panel settings. If calibration does not resolve the issue, inspect the touch overlay for damage and replace if necessary.

Communication with PLC cannot be established

Verify the MPI or PROFIBUS cable connections at both the panel and PLC ends. Check bus termination at both ends of the network. Confirm that the PLC address and baud rate in the HMI project match the actual PLC settings.

Replace or reseat the communication cable. Correct any address or baud rate mismatches in the WinCC flexible project and reload the project to the panel. Ensure termination resistors are correctly installed.

Panel freezes or restarts unexpectedly during operation

Check the 24 V DC supply for voltage dips or instability under load. Review the system event log on the panel for recorded fault events. Assess whether the issue correlates with specific screen changes or tag updates.

Stabilize the power supply and add filtering if necessary. Optimize the WinCC flexible project to reduce CPU load. If the problem persists, perform a firmware update using ProSave and consider a factory reset followed by project reload.

CF card data not saved or card not recognized

Check whether the CF card is fully inserted and the card slot contacts are clean. Test the CF card in a PC card reader to verify its integrity and file system.

Replace the CF card with a compatible industrial-grade CompactFlash card. Reformat the card using the panel's built-in formatting tool if the file system is corrupted. Ensure the card capacity and type are within the panel's supported specifications.

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