Siemens 6AV6446-1AA41-0BA4 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-0BA4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-0BA4
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-0BA4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-0BA4 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 local operation and monitoring capabilities within automated production environments. The MP 370 series bridges the gap between standard operator panels and full PC-based SCADA systems, providing a reliable and compact visualization solution.

The 6AV6446-1AA41-0BA4 variant is equipped with a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA), supporting up to 256 colors. It includes a touch screen interface and integrates multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling flexible integration into Siemens S7 PLC networks. The panel runs on Windows CE and is configured using WinCC flexible engineering software, supporting project memory via CompactFlash card. It operates on a 24 V DC supply and is rated IP65 on the front face for protection against dust and water ingress.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical industries where a reliable and feature-rich HMI is required at the machine level. Its PROFIBUS DP and MPI connectivity make it particularly suited for integration with Siemens S7-300 and S7-400 PLC systems. The panel's robust construction and IP65 front protection make it appropriate for installation in industrial control cabinets exposed to harsh environmental conditions.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Type	TFT Color LCD
Display Colors	256 colors
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 40 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Operating System	Windows CE
Configuration Software	WinCC flexible 2004 or higher
Memory (Project)	CompactFlash card (external)
IP Protection Rating	IP65 (front), IP20 (rear)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Configuration error detected during project transfer or startup. The loaded project is incompatible with the panel firmware version.
Verify that the WinCC flexible project version matches the panel firmware. Re-transfer the project after updating firmware or recompiling the project.
Event ID: 20000: Communication connection to the PLC has been lost or cannot be established.
Check MPI/PROFIBUS DP or Ethernet cable connections and termination resistors. Verify PLC address settings and communication parameters in the project configuration.
Event ID: 40000: System memory low warning. Available RAM for runtime operation is critically low.
Reduce the number of active screens or objects loaded simultaneously. Check for memory leaks in scripts and optimize the project structure.
Event ID: 50000: CompactFlash card not detected or read/write error on the storage medium.
Reseat the CompactFlash card and ensure it is properly formatted. Replace the CompactFlash card if errors persist after reseating.
Event ID: 60000: Internal hardware fault detected. A self-diagnostic check has identified a hardware component failure.
Perform a panel restart. If the fault persists, the unit requires professional repair or replacement of the internal mainboard.
Event ID: 70000: Firmware update failed or firmware image is corrupt.
Retry the firmware update using the correct firmware file for the 6AV6446-1AA41-0BA4. Ensure stable power supply during the update process.
Event ID: 30000: Tag or variable update timeout. A configured tag could not be updated within the defined monitoring time.
Check PLC communication and verify that the tag addresses configured in WinCC flexible match the actual PLC data blocks. Increase the monitoring time if necessary.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC MP 370 (6AV6446-1AA41-0BA4)?

The MP 370 is primarily designed for use with Siemens S7-300 and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It also supports Ethernet-based communication with S7 PLCs using the TCP/IP interface.

What software is required to configure and program this HMI panel?

The panel is configured using Siemens WinCC flexible 2004 or a later compatible version. Projects are compiled in WinCC flexible and transferred to the panel via Ethernet, MPI, or USB.

What is the display resolution and touch technology of the 6AV6446-1AA41-0BA4?

This panel features an 800 x 600 pixel (SVGA) TFT color display with a resistive touch screen interface, supporting up to 256 colors.

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

The front face of the MP 370 is rated IP65, providing full protection against dust ingress and protection against low-pressure water jets. The rear of the unit is rated IP20.

Can the MP 370 store data locally?

Yes, the MP 370 supports data storage via an external CompactFlash card, which is used for project storage, recipe data, and data logging functions.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector. Check that the supply is within the specified range and that the polarity is correct. Inspect the internal fuse if accessible.

Correct any supply voltage issues. If the supply is confirmed good and the display remains blank, the internal power supply board or backlight inverter may have failed and the unit should be sent for repair.

Touch screen does not respond or responds inaccurately

Check whether the touch screen is physically damaged or contaminated. Attempt a touch screen recalibration through the panel's Control Panel settings in Windows CE.

Clean the touch screen surface with a soft, dry cloth. Perform a recalibration via Start > Control Panel > Touch on the Windows CE interface. If inaccuracy persists, the touch screen overlay may require replacement.

Communication with the PLC cannot be established

Verify the MPI or PROFIBUS DP cable connections, bus termination, and node addresses. Check that the communication parameters in the WinCC flexible project match the PLC configuration.

Correct any wiring or termination issues. Ensure the PLC address in the HMI project matches the physical PLC setting. Test with a known-good cable to rule out cable faults.

Project transfer from engineering PC fails

Check the transfer cable or Ethernet connection between the PC and the panel. Ensure the panel is set to Transfer mode and that the correct interface is selected in WinCC flexible transfer settings.

Switch the panel to Transfer mode via the Start Center or Control Panel. Verify the IP address or MPI address settings. Disable any firewall software on the engineering PC that may block the transfer.

Panel restarts unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or instability under load. Review the Windows CE event log for software exceptions. Inspect the CompactFlash card for errors.

Stabilize the power supply using a dedicated 24 V DC source with adequate current capacity. Replace the CompactFlash card if storage errors are found. If the issue persists, a firmware re-flash or hardware repair may be required.

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