Siemens 6AV6446-2AA45-0BY4 SIMATIC MP 377

Name: Siemens 6AV6446-2AA45-0BY4 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-2AA45-0BY4
Price: 5722.00 EUR
Availability: InStock

€ 5.722,00

Condition

Clear

SKU: 6AV6446-2AA45-0BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-2AA45-0BY4 is a Multi Panel belonging to the SIMATIC MP 377 series, part of Siemens' SIMATIC HMI product family. This unit features a 15-inch TFT display and is designed for demanding visualization and operator control tasks in industrial automation environments. It runs on the Windows CE operating system and is configured and programmed using Siemens WinCC flexible or TIA Portal software.

The MP 377 15" Touch features a high-resolution 1024 x 768 pixel (XGA) TFT display with 64,000 colors and resistive touch screen technology for reliable operator input. It is equipped with multiple communication interfaces including PROFIBUS DP, PROFINET (Ethernet), USB ports, and a serial RS-422/RS-485 interface, enabling integration into a wide range of automation architectures. The panel includes 12 MB user memory for project data and supports MPI/PROFIBUS communication at up to 12 Mbit/s, as well as 10/100 Mbit/s Ethernet connectivity.

The SIMATIC MP 377 is widely deployed in machine building, process automation, and plant engineering applications where a robust, mid-to-large format HMI is required. Its compatibility with Siemens S7-300, S7-400, and S7-1500 PLC families makes it a common choice for system integrators working within the Siemens automation ecosystem. Industries such as automotive manufacturing, food and beverage processing, chemical plants, and water treatment facilities commonly utilize this panel for supervisory control and data visualization tasks.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 px (XGA)
Display Colors	64,000 colors
Display Type	TFT LCD
Touch Technology	Resistive touchscreen
Operating System	Windows CE 6.0
User Memory	12 MB
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 40 W
Communication Interface	PROFIBUS DP, PROFINET (Ethernet 10/100 Mbit/s), MPI, RS-422/RS-485, USB
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP/Protection Rating	IP65 (front), IP20 (rear)
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Project transfer error — communication between the engineering station and the panel could not be established during download.
Check the network or PROFIBUS connection between the PC and the panel. Verify IP address or PROFIBUS address settings and ensure WinCC flexible or TIA Portal is configured for the correct interface.
Event ID: 10001: Project data corrupted or incompatible — the loaded project file cannot be executed by the panel runtime.
Recompile and retransfer the project from the engineering station. Ensure the WinCC flexible or TIA Portal version matches the panel firmware version.
Event ID: 20000: Connection to PLC lost — the configured communication connection to the controller has been interrupted.
Check PROFIBUS or Ethernet cabling and connectors. Verify PLC is powered and running. Check communication parameters (IP address, PROFIBUS address, rack/slot settings).
Event ID: 20001: Tag read/write error — a configured tag could not be read from or written to the connected PLC.
Verify the tag address exists in the PLC program and is accessible. Check data type consistency between HMI tag configuration and PLC variable.
Event ID: 40000: System memory low — available runtime memory on the panel is critically low.
Reduce the number of open screens or active alarms. Simplify the project or reduce the number of simultaneous connections. Restart the panel if necessary.
Event ID: 50000: Alarm buffer overflow — the alarm log has exceeded its configured maximum capacity.
Acknowledge and clear pending alarms. Increase the alarm buffer size in the project configuration or archive alarms to external storage.
Event ID: 70000: Firmware update failed — an error occurred during a firmware update procedure.
Retry the firmware update using the correct firmware file for the MP 377 15" Touch. Ensure stable power supply during the update and use the correct transfer medium (USB or Ethernet).
Event ID: 80000: Touchscreen calibration error — the touch input is misaligned or unresponsive.
Perform a touchscreen recalibration via the panel's Start Center or Control Panel settings. If the issue persists, check the touchscreen connector internally or replace the touch overlay.

Frequently Asked Questions

What PLC families is the SIMATIC MP 377 compatible with?

The MP 377 is compatible with Siemens S7-200, S7-300, S7-400, and S7-1500 PLC families via MPI, PROFIBUS DP, or PROFINET interfaces. It can also communicate with third-party controllers via serial protocols.

What software is used to program the 6AV6446-2AA45-0BY4?

This panel is programmed using Siemens WinCC flexible 2008 or later, or alternatively via the TIA Portal with the WinCC option. The project is then transferred to the panel via Ethernet, USB, or PROFIBUS.

What is the input voltage requirement for this panel?

The MP 377 15" Touch requires a 24 V DC power supply. Ensure the power source is stable and within the specified tolerance range to prevent runtime errors.

Does this panel support PROFINET communication?

Yes, the 6AV6446-2AA45-0BY4 includes an integrated PROFINET (Ethernet) interface supporting 10/100 Mbit/s, in addition to PROFIBUS DP and MPI interfaces.

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

The front of the panel carries an IP65 protection rating, making it suitable for installation in control cabinet doors where it may be exposed to dust and water spray. The rear of the unit is rated IP20.

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 tolerance. Inspect the internal fuse if accessible.

Correct the power supply voltage if out of range. Replace a blown internal fuse with the correct rating. If the backlight has failed, the backlight unit or inverter board may need replacement.

Touchscreen does not respond or registers incorrect input positions

Attempt a touchscreen recalibration from the Start Center. Check whether the touch overlay is physically damaged or contaminated.

Recalibrate the touchscreen via the Control Panel in Windows CE. Clean the screen surface. If calibration fails repeatedly, the resistive touch overlay may need to be replaced.

Panel cannot establish communication with the PLC

Verify the PROFIBUS address or IP address configured on the panel matches the HMI project settings. Check physical cabling and connectors on both the panel and PLC side.

Correct any address mismatches in the project configuration and retransfer. Replace damaged cables or connectors. Ensure the PLC is in RUN mode and the communication module is functioning correctly.

Project transfer from engineering PC fails repeatedly

Check the transfer cable or network connection between the PC and the panel. Verify the panel is in Transfer mode via the Start Center. Confirm firewall or antivirus software is not blocking the connection.

Set the panel to Transfer mode manually. Disable firewall rules blocking WinCC flexible communication ports. Try an alternative transfer medium such as USB if Ethernet transfer is failing.

Panel freezes or restarts unexpectedly during operation

Check for memory overload conditions (too many alarms, large project, many simultaneous connections). Verify the 24 V DC supply is stable and free from voltage dips.

Optimize the project to reduce memory usage. Ensure the power supply unit is adequately rated for the panel's load. Update the panel firmware to the latest version compatible with the MP 377 series.

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