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

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

€ 1.995,00

Condition

Clear

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

Description
Additional information

The Siemens 6AV6446-6AA41-3BY3 is a Multi Panel (MP 377) belonging to the SIMATIC HMI family, designed for demanding visualization and operator control tasks in industrial automation environments. This panel is part of the MP 377 series, which offers a 12-inch TFT display and is built to operate reliably in harsh industrial conditions. It serves as a high-performance human-machine interface (HMI) for process monitoring, machine control, and data visualization.

The MP 377 12" features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports both touch and key operation. It is equipped with Windows CE as its operating system and runs WinCC flexible or SIMATIC WinCC (TIA Portal) runtime software. The panel provides multiple communication interfaces including PROFIBUS DP, PROFINET/Ethernet (RJ45), USB ports, and a serial RS-422/RS-485 interface, enabling integration into a wide range of automation architectures. Onboard memory includes 12 MB of user memory for project data, and a CompactFlash card slot allows for additional storage expansion.

The SIMATIC MP 377 12" is widely used in the manufacturing, automotive, food and beverage, chemical, and water treatment industries. Its robust construction, wide operating temperature range, and IP65 front panel protection rating make it suitable for installation in control cabinets and machine front panels exposed to dust, moisture, and vibration. The combination of touch and function key operation provides operators with flexible and intuitive control in environments where gloved operation or precise key input is required.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	64,000 colors
Touch Technology	Resistive touch screen with function keys
Operating System	Windows CE 5.0
User Memory	12 MB
Memory Expansion	CompactFlash card slot
Communication Interface	PROFIBUS DP, PROFINET/Ethernet (RJ45), RS-422/RS-485, USB
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
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: 1000000: System startup event. The HMI device has completed its boot sequence and runtime has started.
No action required. Verify that the project loads correctly and communication with the PLC is established.
Event ID: 1000002: Project transfer active. The panel is in transfer mode awaiting a project download from an engineering station.
Ensure the correct project is being transferred from the PC running WinCC flexible or TIA Portal. Check network or USB connection.
Event ID: 1000003: Communication error with PLC. The HMI panel has lost connection to the configured PLC or controller.
Check PROFIBUS or Ethernet cable connections, verify PLC address settings, and confirm the PLC is powered and running.
Event ID: 1000004: Tag read/write error. A configured tag could not be read from or written to the PLC.
Verify the tag address configuration in the HMI project matches the PLC data block or memory area. Check communication link integrity.
Event ID: 1000010: Backup battery low or missing. The internal backup battery voltage is below the required threshold.
Replace the internal backup battery with the correct Siemens replacement type. Refer to the device manual for battery replacement procedure.
Event ID: 1000011: CompactFlash card error. The inserted CompactFlash card cannot be read or is not recognized.
Remove and reinsert the CompactFlash card. If the error persists, format the card or replace it with a compatible CompactFlash card.
Event ID: 1000020: Screen saver active. The display has entered screen saver mode due to inactivity.
Touch the screen or press any key to deactivate the screen saver. Adjust screen saver timeout settings in the Control Panel if required.
Event ID: 1000040: Runtime software fault. The WinCC flexible or WinCC runtime has encountered an internal error and may have terminated.
Restart the runtime application via the Start Center. If the fault recurs, reload the project or perform a factory reset and re-transfer the project.

Frequently Asked Questions

What HMI software is compatible with the SIMATIC MP 377 12"?

The MP 377 12" is compatible with Siemens WinCC flexible 2008 and SIMATIC WinCC Runtime Advanced via TIA Portal. Projects must be compiled and transferred using the appropriate engineering software version.

What communication protocols does the 6AV6446-6AA41-3BY3 support?

The panel supports PROFIBUS DP, PROFINET/Industrial Ethernet via RJ45, RS-422/RS-485 serial communication, and USB. This allows connectivity to a wide range of Siemens and third-party PLCs.

Is the MP 377 12" compatible with Siemens S7-300 and S7-400 PLCs?

Yes, the MP 377 is fully compatible with SIMATIC S7-300, S7-400, and S7-1500 PLCs via PROFIBUS DP or PROFINET, as well as with S7-200 via serial communication.

What is the front panel protection rating of this HMI?

The front panel of the MP 377 12" carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets, suitable for installation in industrial machine fronts.

Can the MP 377 12" be expanded with additional storage?

Yes, the panel includes a CompactFlash card slot that can be used to expand storage for project data, recipes, data logs, and backup files.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check that the voltage is within the specified range (20.4 V to 28.8 V DC). Inspect the internal fuse if accessible.

Correct the supply voltage if out of range. If voltage is correct and display remains blank, the backlight inverter or internal power supply may be faulty and the unit should be sent for repair or the backlight replaced.

HMI panel does not communicate with PLC via PROFIBUS

Check the PROFIBUS cable connections and termination resistors at both ends of the bus. Verify the PROFIBUS address configured on the HMI matches the address set in the PLC project. Use a PROFIBUS diagnostic tool to check bus integrity.

Correct any wiring faults, ensure proper bus termination, and confirm matching PROFIBUS addresses in both the HMI project and PLC configuration. Reload the HMI project if configuration changes are made.

Touch screen does not respond or responds inaccurately

Check for physical damage to the touch surface. Attempt to recalibrate the touch screen via the Windows CE Control Panel or the SIMATIC HMI Start Center. Verify that no foreign objects are pressing against the screen.

Perform a touch screen recalibration through the Control Panel. If inaccuracy persists after calibration, the resistive touch overlay may be worn or damaged and requires replacement.

Project fails to transfer from engineering PC to the panel

Verify that the panel is in Transfer mode via the Start Center. Check the Ethernet or USB cable connection between the PC and the panel. Confirm that the IP address of the panel is correctly configured and reachable from the PC.

Set the panel to Transfer mode manually via the Start Center. Ensure the correct transfer channel (Ethernet or USB) is selected in WinCC flexible or TIA Portal. Disable any firewall software on the PC that may block the transfer connection.

Panel repeatedly reboots or freezes during runtime

Check for corrupted project data by reviewing the event log in the Start Center. Verify that the CompactFlash card is properly seated and not corrupted. Monitor the supply voltage for instability.

Re-transfer a freshly compiled project to the panel. Replace the CompactFlash card if it is found to be faulty. Ensure the 24 V DC power supply is stable and adequately rated for the panel's power consumption.

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