Siemens 6AV6446-7AA41-0BY4 MP 377

€ 1.995,00

SKU: 6AV6446-7AA41-0BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-7AA41-0BY4 is a Multi Panel from the SIMATIC MP 377 series, part of Siemens' SIMATIC HMI product line. This unit features a 15-inch TFT display and is designed for high-performance human-machine interface applications in industrial automation environments. It belongs to the MP 377 family, which represents a mid-to-upper tier of Siemens' panel-based HMI solutions.

The MP 377 15" Touch (6AV6446-7AA41-0BY4) is equipped with a resistive touchscreen and supports a display resolution of 1024 x 768 pixels (XGA) with 64,000 colors. It runs on Microsoft Windows CE and is configurable using Siemens WinCC flexible or TIA Portal WinCC. The panel provides multiple communication interfaces including PROFIBUS DP, PROFINET/Ethernet (RJ45), USB ports, and a serial RS-422/RS-485 interface, enabling integration with a wide range of Siemens and third-party controllers. It features 12 MB user memory for project data and supports CF card slots for extended storage.

The SIMATIC MP 377 is widely deployed in manufacturing, process automation, automotive, food and beverage, and chemical industries. Its large 15-inch display makes it suitable for complex visualization tasks requiring detailed process overviews, trend displays, and alarm management. The panel's robust industrial design and broad communication capability make it appropriate for both machine-level and plant-level HMI applications.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	64,000 colors
Display Type	TFT LCD
Touch Technology	Resistive touchscreen
Operating System	Windows CE
User Memory	12 MB
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 40 W
Communication Interface	PROFIBUS DP, PROFINET/Ethernet (RJ45), USB, RS-422/RS-485
Storage Expansion	CompactFlash (CF) 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: 10000: Communication error between HMI panel and PLC controller. Connection to the configured PLC could not be established or was lost during operation.
Check PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both the HMI panel and PLC if necessary.
Event ID: 10001: Tag read error. The HMI panel is unable to read a configured tag or variable from the connected controller.
Verify the tag address in WinCC flexible or TIA Portal WinCC matches the actual PLC data block or memory address. Check communication link status and PLC program.
Event ID: 10002: Tag write error. The HMI panel failed to write a value to a configured tag in the connected controller.
Check that the target PLC memory area is not write-protected. Verify the tag address and data type configuration in the HMI project. Confirm the PLC is in RUN mode.
Event ID: 20000: Project loading error. The HMI panel encountered an error while loading the project from internal memory or CF card.
Re-transfer the project from the engineering PC using WinCC flexible or TIA Portal. Check the CF card for errors or replace it. Ensure the project was compiled without errors before transfer.
Event ID: 40000: System memory low. Available RAM for the HMI runtime is critically low, which may cause instability or slow response.
Reduce the number of active screens or objects in the project. Close unnecessary background applications. Consider optimizing the project structure to reduce memory usage.
Event ID: 50000: Backup battery low or missing. The internal backup battery voltage has dropped below the required threshold.
Replace the internal backup battery with the correct Siemens replacement type. Refer to the device manual for battery replacement procedure to avoid data loss.
Event ID: 60000: Touchscreen calibration error or touch input not responding correctly to user interaction.
Recalibrate the touchscreen via the Control Panel in Windows CE. If calibration fails repeatedly, inspect the touchscreen overlay for damage and consider replacement.
Event ID: 70000: CF card read/write error. The panel cannot access or write to the inserted CompactFlash card.
Remove and reinsert the CF card. Check the card for physical damage or corruption using a PC. Replace the CF card if errors persist and ensure the card is formatted correctly.

Frequently Asked Questions

What software is used to configure the SIMATIC MP 377 (6AV6446-7AA41-0BY4)?

The MP 377 can be configured using Siemens WinCC flexible 2008 or TIA Portal with WinCC. Projects are compiled on an engineering PC and transferred to the panel via Ethernet, USB, or CF card.

What communication protocols does the MP 377 support?

The MP 377 supports PROFIBUS DP, PROFINET/Industrial Ethernet via RJ45, USB, and serial RS-422/RS-485 interfaces. This allows connection to Siemens S7-300, S7-400, S7-1200, and S7-1500 PLCs as well as third-party controllers.

Is the 6AV6446-7AA41-0BY4 compatible with Siemens S7-1500 PLCs?

Yes, the MP 377 can communicate with S7-1500 PLCs via PROFINET/Ethernet when configured appropriately in TIA Portal WinCC. Ensure the firmware and WinCC version support the S7-1500 driver.

What is the front panel protection rating of the MP 377?

The front panel of the MP 377 meets IP65 protection, making it resistant to dust ingress and low-pressure water jets, suitable for industrial panel mounting environments.

Can the MP 377 store data logs or recipes on external media?

Yes, the MP 377 supports data logging and recipe storage on CompactFlash (CF) cards inserted into the onboard CF card slot, as well as on USB storage devices connected via the USB ports.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check that the voltage is within the specified tolerance. Inspect the internal fuse if accessible.

Restore the 24 V DC supply to within specification. If the supply is correct and the display remains blank, the backlight inverter or display assembly may be faulty and require replacement.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touchscreen through the Windows CE Control Panel under the Stylus or Touch settings. Check for physical damage, contamination, or delamination of the touch overlay.

Perform a full touchscreen recalibration. Clean the screen surface with a soft cloth. If calibration fails or accuracy does not improve, the resistive touchscreen overlay requires replacement.

HMI cannot establish communication with the PLC

Verify the Ethernet or PROFIBUS cable is properly connected and undamaged. Check the IP address or PROFIBUS node address configured in the HMI project matches the PLC settings. Use the panel's diagnostic tools to ping the PLC.

Correct any address mismatches in the WinCC project and retransfer. Replace faulty cables or connectors. Ensure the PLC is powered and in RUN mode. Check network switches or PROFIBUS repeaters if present.

Project transfer from engineering PC fails

Check the USB or Ethernet connection between the engineering PC and the panel. Verify the panel is in Transfer mode (accessible via the Start Center on the panel). Confirm firewall or antivirus software is not blocking the transfer.

Set the panel to Transfer mode manually via the Start Center. Disable firewall rules blocking WinCC flexible or TIA Portal transfer ports. Try an alternative transfer medium such as a CF card if network transfer continues to fail.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or ripple using an oscilloscope or multimeter. Review the alarm and event logs on the panel for system error events. Assess whether the issue correlates with specific screen changes or tag updates.

Stabilize the power supply and ensure adequate current capacity. Optimize the HMI project to reduce CPU load. Update the panel firmware to the latest version available from Siemens. If the issue persists, the main processing board may require repair or replacement.

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