Siemens 6AV6446-1AA41-2BA5 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-2BA5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-2BA5
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-2BA5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-2BA5 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization tasks. It features a 12-inch TFT display and is part of Siemens' high-performance operator panel lineup, offering robust graphical visualization capabilities for industrial automation environments. This unit is configured for touch operation and integrates seamlessly into Siemens automation architectures.

The MP 370 panel is equipped with a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA), supporting up to 256 colors. It provides multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling flexible integration with SIMATIC S7 PLCs and other controllers. The panel runs on WinCC flexible runtime software and offers onboard flash memory for project storage, along with a CompactFlash card slot for additional memory expansion. Operating on 24 V DC supply, it is built to withstand the rigors of industrial environments.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant operations. Its large display area and multi-interface connectivity make it suitable for complex HMI applications requiring detailed process visualization, alarm management, and recipe handling. The panel is particularly valued in applications where both touch interaction and high graphical fidelity are required at the machine or cell level.

Technical Specifications

Display Size	12 inch
Display Type	TFT color LCD
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Touch Technology	Resistive touch screen
Input Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Memory (Internal Flash)	4 MB (project memory)
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: 1000: Configuration error detected during project download or startup
Verify project compatibility with the panel firmware version and re-download the project using WinCC flexible.
Event ID: 10000: Communication connection to PLC lost or unavailable
Check MPI/PROFIBUS/Ethernet cable connections, verify PLC address settings, and confirm network configuration in the HMI project.
Event ID: 20000: Tag read/write error — PLC tag could not be accessed
Verify the tag address and data type in the WinCC flexible project match the PLC variable configuration.
Event ID: 40000: System memory low — available runtime memory is insufficient
Reduce the number of active screens or objects, optimize the project, or clear unnecessary data from the CompactFlash card.
Event ID: 50000: Project transfer failed during download from engineering station
Check the transfer cable or network connection, ensure the panel is in transfer mode, and verify firewall settings on the PC.
Event ID: 70000: Recipe data error — recipe record could not be read or written
Check recipe configuration in WinCC flexible, verify storage medium (CompactFlash) is properly inserted and not write-protected.
Event ID: 110000: Backup/restore operation failed
Ensure the CompactFlash card has sufficient free space and is not corrupted. Retry the backup/restore operation from the panel's Start Center.

Frequently Asked Questions

Which PLC families are compatible with the SIMATIC MP 370?

The MP 370 is compatible with SIMATIC S7-200, S7-300, S7-400, and S7-1200 PLCs via MPI, PROFIBUS DP, or Ethernet interfaces. It also supports connections to third-party controllers via serial protocols.

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

The MP 370 is programmed using Siemens WinCC flexible engineering software. Projects are downloaded to the panel via MPI, PROFIBUS, Ethernet, or USB connection.

Can the MP 370 be operated with a keyboard or mouse in addition to touch?

Yes, the MP 370 supports connection of an external USB keyboard and mouse, which can be used alongside or instead of the touch screen for operator input.

What is the maximum project size supported by the MP 370?

The internal flash memory supports up to 4 MB of project data. Larger projects or additional data such as recipes and logs can be stored on a CompactFlash card inserted into the panel.

Is the MP 370 front panel IP65 rated?

Yes, the front face of the MP 370 achieves IP65 protection when correctly installed in a panel cutout with the supplied seal, making it resistant to dust and water jets.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check for blown internal fuse. Observe whether the backlight is off or the screen shows no image at all.

Ensure the 24 V DC supply is within tolerance (20.4–28.8 V DC). Replace the internal fuse if blown. If the backlight has failed, the backlight inverter or display assembly may require replacement.

Panel does not communicate with the PLC

Check the MPI or PROFIBUS cable connections and termination resistors. Verify the bus address configured on the panel matches the project settings. Use a bus diagnostic tool to check for network errors.

Correct any wiring faults, ensure proper bus termination at both ends of the cable, and confirm the panel's MPI/PROFIBUS address is unique on the network. Re-download the project if configuration changes are made.

Touch screen is unresponsive or inaccurate

Determine whether the touch screen is completely unresponsive or only inaccurate in certain areas. Access the panel's Start Center to run the touch calibration routine.

Recalibrate the touch screen via the Start Center calibration tool. If the touch screen remains unresponsive after calibration, the touch foil or touch controller may be defective and require replacement.

Panel repeatedly restarts or crashes during operation

Check for overheating by measuring ambient temperature around the panel. Review system event logs in WinCC flexible for recurring event IDs. Check the CompactFlash card for errors.

Ensure ambient temperature does not exceed 50 °C and that ventilation around the panel is adequate. Replace a faulty CompactFlash card. If the issue persists, the panel's internal power supply or main board may require service.

Project download fails from engineering PC

Verify the communication cable (MPI, Ethernet, or USB) is properly connected. Confirm the panel is set to Transfer mode via the Start Center. Check PC firewall and antivirus settings that may block the transfer.

Set the panel to Transfer mode before initiating download. Use a known-good cable and verify the correct communication channel is selected in WinCC flexible Transfer settings. Temporarily disable PC firewall if blocking is suspected.

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