Siemens 6AV6446-1AA40-2BA3 MP 370

€ 2.495,00

SKU: 6AV6446-1AA40-2BA3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-2BA3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI Multi Panel series, designed for demanding visualization and operator control tasks in industrial automation environments. This panel features a 15-inch TFT display and runs on the Windows CE operating system, making it suitable for complex HMI applications requiring high graphical performance. It is part of Siemens' established SIMATIC HMI product line, which is widely used in conjunction with SIMATIC S7 PLCs and other automation systems.

The MP 370 (6AV6446-1AA40-2BA3) is equipped with a touch-screen interface and supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling flexible integration into existing automation networks. The panel operates on a 24 V DC power supply and provides a display resolution of 1024 x 768 pixels with 256 colors, delivering clear visualization of process data. It supports configuration via Siemens WinCC flexible engineering software and offers onboard memory for project storage, along with a CompactFlash card slot for additional memory expansion. The unit is rated IP65 on the front face, providing protection against dust and water ingress in industrial environments.

The MP 370 is commonly deployed in manufacturing plants, automotive production lines, chemical processing facilities, and water treatment installations where a robust and versatile HMI solution is required. Its large display area and multi-protocol communication capability make it well suited for applications demanding detailed process visualization and operator interaction across complex machinery. The panel's compatibility with the broader SIMATIC ecosystem ensures straightforward integration with existing Siemens PLC and drive infrastructure.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Type	TFT color LCD
Display Colors	256 colors
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 60 W
Operating System	Windows CE
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Memory (Internal)	12 MB (project memory)
Memory Expansion	CompactFlash card slot
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
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: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been lost.
Check MPI/PROFIBUS/Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both the HMI panel and the PLC.
Event ID: 10001: Timeout on communication connection. The HMI panel did not receive a response from the PLC within the configured timeout period.
Check network cabling and connectors. Verify PLC is in RUN mode. Increase the communication timeout value in WinCC flexible project settings if network latency is high.
Event ID: 20000: Project download error. A fault occurred during the transfer of the HMI project from the engineering PC to the panel.
Ensure the correct transfer cable or network connection is used. Verify WinCC flexible version compatibility with the panel firmware. Check available memory on the panel and clear old projects if necessary.
Event ID: 40000: Tag update error. One or more process tags cannot be read or written, typically due to an address mismatch between the HMI project and the PLC program.
Verify tag addresses in the WinCC flexible project match the actual PLC data block or memory addresses. Recompile and re-download the project after corrections.
Event ID: 50000: System memory low. The available runtime memory on the panel is insufficient to execute the current project.
Reduce the complexity of the HMI project (e.g., reduce number of simultaneous alarms, limit trend data). Consider archiving data to a CompactFlash card. Restart the panel to free temporary memory.
Event ID: 60000: Backup battery low or missing. The internal buffer battery voltage has dropped below the minimum threshold, risking loss of retained data.
Replace the internal buffer battery with the correct Siemens-specified replacement. Perform a backup of the project before replacing the battery to avoid data loss.
Event ID: 70000: Operating system error or panel firmware fault. An internal software exception has occurred causing the panel to become unresponsive or restart unexpectedly.
Perform a controlled restart of the panel. If the fault persists, update the panel firmware to the latest version using Siemens ProSave tool. If unresolved, a factory reset may be required.

Frequently Asked Questions

What engineering software is required to configure the MP 370 (6AV6446-1AA40-2BA3)?

The MP 370 is configured using Siemens WinCC flexible software. The appropriate version must be compatible with the panel's firmware version; WinCC flexible 2008 SP4 or later is typically recommended for this panel.

What communication protocols does the 6AV6446-1AA40-2BA3 support?

This panel supports MPI, PROFIBUS DP, and Ethernet (TCP/IP) communication interfaces, as well as RS-422/485 serial communication. This allows connection to a wide range of Siemens and third-party PLCs.

What is the supply voltage for the MP 370 panel?

The MP 370 operates on a 24 V DC power supply. Ensure the power source is stable and within the specified tolerance range to avoid panel faults.

Is the MP 370 compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the MP 370 is fully compatible with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP interfaces, and also supports Ethernet-based communication with S7 controllers equipped with appropriate communication modules.

What is the front panel protection rating of the 6AV6446-1AA40-2BA3?

The front face of the MP 370 is rated IP65, providing full protection against dust ingress and protection against low-pressure water jets, making it suitable for installation in industrial panel doors.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check that the voltage is within the specified tolerance. 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 or the backlight replaced.

Touch screen does not respond or responds inaccurately

Check whether the touch screen responds at all by observing any visual feedback on the display. Determine if the issue is a complete failure or a calibration drift by testing touch accuracy across different screen areas.

Perform a touch screen recalibration via the panel's Control Panel settings in Windows CE. If the touch screen remains unresponsive after recalibration, the touch glass or touch controller board may be faulty and require replacement.

HMI panel cannot establish communication with the PLC

Verify the communication cable type and wiring between the panel and PLC. Check that the MPI or PROFIBUS address configured in the HMI project matches the PLC's actual address. Confirm the PLC is powered and in RUN mode.

Correct any address mismatches in the WinCC flexible project and re-download. Replace the communication cable if damaged. Check and set correct bus termination resistors on PROFIBUS networks. Ensure the network baud rate matches on all devices.

Panel restarts unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or ripple using an oscilloscope or multimeter. Review the panel's alarm and event log for system error event IDs. Check ambient temperature around the panel installation.

Stabilize the power supply by adding filtering capacitors or replacing the power supply unit. Ensure adequate ventilation around the panel to prevent overheating. Update panel firmware using Siemens ProSave if a software fault is suspected.

Project transfer from engineering PC fails

Verify the transfer cable or Ethernet connection between the PC and the panel. Confirm the panel is in Transfer mode (accessible via the Start Center on the panel). Check WinCC flexible version compatibility with the panel firmware version.

Switch the panel to Transfer mode manually via the Start Center. Use the correct transfer cable (PC/PPI or standard Ethernet). Ensure WinCC flexible project is compiled without errors before transfer. Update panel firmware if version incompatibility is detected.

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