Siemens 6AV6446-3AA41-0BY3 SIMATIC MP 377

Name: Siemens 6AV6446-3AA41-0BY3 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-3AA41-0BY3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-3AA41-0BY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA41-0BY3 is a Multi Panel belonging to the SIMATIC MP 377 series, part of Siemens' SIMATIC HMI product line. This unit features a 12-inch TFT display and is designed for demanding machine-level visualization and operator control tasks. It operates under the WinCC flexible runtime environment and is intended for use as a high-performance operator panel in industrial automation systems.

The MP 377 12" Touch features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and 64,000 colors, combined with a resistive touchscreen interface. It is equipped with a 1 GHz processor and 128 MB RAM along with 128 MB flash memory for project and runtime data storage. Communication interfaces include PROFIBUS DP, PROFINET (Ethernet), USB ports, and an RS-422/RS-485 serial interface, enabling integration with a wide range of Siemens and third-party controllers. The unit operates on 24 V DC supply and carries CE and UL certifications.

The SIMATIC MP 377 is widely deployed in manufacturing, automotive, food and beverage, chemical, and water treatment industries. Its robust construction and versatile communication capabilities make it suitable for machine-level HMI applications where reliable process visualization, recipe management, alarm logging, and trend display are required. The panel is compatible with Siemens S7-300, S7-400, and S7-1500 PLC families when used with appropriate communication drivers.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	64,000 colors
Display Type	TFT LCD
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Processor	1 GHz
RAM	128 MB
Flash Memory	128 MB
Communication Interface	PROFIBUS DP, PROFINET (Ethernet), RS-422/RS-485, USB
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
IP Rating (Front)	IP65
Certifications	CE, UL
Mounting	Panel mounting
Series/Product Family	SIMATIC MP 377

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 PROFIBUS or Ethernet cabling and connector integrity. Verify PLC is powered and running. Confirm correct station address and communication parameters in WinCC flexible project.
Event ID: 10001: Tag read/write error. A variable could not be read from or written to the connected controller.
Verify the tag address in the WinCC flexible project matches the actual PLC memory address. Check PLC program for address conflicts or data type mismatches.
Event ID: 20000: Project download error. Transfer of the WinCC flexible project to the panel failed or was interrupted.
Check USB or Ethernet transfer connection. Ensure the panel is in transfer mode. Verify sufficient flash memory is available on the device and retry the download.
Event ID: 40000: System memory low. Available RAM on the HMI panel is critically low, which may affect runtime performance.
Reduce the number of active screens, trends, or logged variables. Optimize the project to reduce memory usage. Restart the panel to clear runtime memory.
Event ID: 50000: Internal device error. A hardware or firmware fault has been detected within the panel.
Perform a power cycle. If the error persists, perform a factory reset via the Control Panel. Update firmware to the latest version using ProSave or WinCC flexible.
Event ID: 70000: Alarm buffer overflow. The alarm log buffer has reached its maximum capacity.
Archive or clear the alarm buffer. Increase the configured alarm buffer size in the WinCC flexible project settings if possible.
Event ID: 30000: Recipe data error. A recipe record could not be read or written correctly.
Check recipe configuration in the WinCC flexible project. Verify that recipe data storage location (flash or memory card) is accessible and not write-protected.

Frequently Asked Questions

What communication interfaces are available on the 6AV6446-3AA41-0BY3?

The MP 377 12" Touch provides PROFIBUS DP, PROFINET (Ethernet), RS-422/RS-485 serial, and USB interfaces, allowing connectivity to a wide range of Siemens and third-party PLCs.

Which Siemens PLCs are compatible with this HMI panel?

The SIMATIC MP 377 is compatible with Siemens S7-300, S7-400, and S7-1500 PLC families, as well as SIMATIC S5 and third-party controllers via appropriate communication drivers configured in WinCC flexible.

What software is required to program and configure this panel?

The panel is configured using Siemens WinCC flexible 2008 or later. Projects are transferred to the device via USB, Ethernet, or PROFIBUS using the ProSave utility or directly from WinCC flexible.

What is the operating supply voltage for this unit?

The 6AV6446-3AA41-0BY3 operates on a 24 V DC supply voltage.

Can a Compact Flash or memory card be used for additional storage?

Yes, the SIMATIC MP 377 supports a Compact Flash card slot for extended data storage, including project backup, recipe data, alarm logs, and trend data archiving.

Troubleshooting

Display remains blank after power on

Measure 24 V DC at the power supply connector. Check internal fuse and verify the power LED status. Attempt to access the Control Panel by touching the screen during boot.

Ensure stable 24 V DC supply within tolerance. Replace the internal fuse if blown. If the backlight has failed, the display panel or inverter board may require replacement.

Touchscreen does not respond or is misaligned

Attempt to recalibrate the touchscreen via the Siemens Control Panel accessible during startup. Check for physical damage or contamination on the touch surface.

Perform a touchscreen recalibration through the Start Center or Control Panel. Clean the screen surface with a soft cloth. If calibration fails repeatedly, the touchscreen overlay may need replacement.

Panel fails to communicate with PLC over PROFIBUS

Check PROFIBUS cable termination resistors at both ends of the network. Verify the panel PROFIBUS address matches the configuration in the WinCC flexible project. Use a PROFIBUS diagnostic tool to check bus integrity.

Correct cable termination and ensure only the two physical endpoints of the PROFIBUS segment have termination resistors enabled. Confirm matching baud rate and station address settings on both the panel and PLC.

WinCC flexible project cannot be transferred to the panel

Verify the panel is set to Transfer mode via the Start Center. Check the USB or Ethernet connection between the engineering PC and the panel. Confirm firewall settings are not blocking the transfer port.

Switch the panel to Transfer mode manually. Use a known-good USB cable or direct Ethernet connection. Disable PC firewall temporarily during transfer. Ensure the WinCC flexible version is compatible with the panel firmware version.

Panel repeatedly restarts or crashes during runtime

Check for project errors or unhandled exceptions in the WinCC flexible runtime log. Monitor RAM usage during operation. Inspect the 24 V DC supply for voltage fluctuations or noise.

Optimize the project to reduce memory load. Update the panel firmware using ProSave. Ensure the power supply is stable and adequately rated. If the issue persists, perform a factory reset and reload the project.

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