Siemens 6AV6446-7BA41-2BY4 SIMATIC MP 377

Name: Siemens 6AV6446-7BA41-2BY4 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-7BA41-2BY4
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-7BA41-2BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-7BA41-2BY4 is a Multi Panel belonging to the SIMATIC MP 377 series, part of Siemens' SIMATIC HMI product line. This unit features a 15-inch TFT display and is designed for demanding machine-level and process visualization tasks. It operates as a standalone HMI panel capable of running WinCC flexible runtime applications.

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. It is equipped with a 1 GHz processor, 128 MB RAM, and 128 MB flash memory for application storage. Communication interfaces include PROFINET (RJ45), MPI/PROFIBUS DP (RS-422/RS-485), USB ports, and an SD card slot for data archiving and project transfer. The panel operates on 24 V DC supply voltage and supports integration with Siemens S7-300, S7-400, and S7-1500 PLC families via standard Siemens communication drivers.

The SIMATIC MP 377 is widely used in machine building, automotive manufacturing, food and beverage processing, and chemical plant environments where robust and reliable HMI visualization is required. Its large display size and multi-protocol communication capability make it suitable for complex process overviews and multi-axis machine control panels. The panel's IP65 front protection rating allows installation in industrial enclosures exposed to dust and water spray.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 px (XGA)
Display Colors	64,000
Display Type	TFT
Touch Technology	Resistive
Input/Operating Voltage	24 V DC
Processor	1 GHz
RAM	128 MB
Flash Memory	128 MB
Communication Interface	PROFINET (RJ45), MPI/PROFIBUS DP (RS-422/RS-485), USB 2.0, SD card slot
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Certifications	CE, UL, cULus
Mounting	Panel mounting

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 PROFINET or MPI/PROFIBUS cabling and connector integrity. Verify PLC is powered and running. Confirm IP address or MPI address settings match the project configuration.
Event ID: 10001: Connection to PLC interrupted during runtime. The HMI panel lost communication with the configured controller.
Inspect network cables and switches. Restart the PLC and HMI panel. Check for duplicate IP or MPI addresses on the network.
Event ID: 20000: Tag read error. The HMI panel cannot read a configured tag from the PLC.
Verify the tag address exists in the PLC program and matches the HMI project configuration. Check data block numbers and variable types.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the panel failed.
Ensure the panel is in Transfer mode. Check USB or Ethernet connection between engineering PC and panel. Verify WinCC flexible version compatibility.
Event ID: 50000: Runtime license missing or invalid. The HMI runtime cannot start due to a missing or expired license.
Check the installed license on the panel using the Control Panel. Transfer a valid WinCC flexible runtime license to the panel via the Automation License Manager.
Event ID: 70000: Internal flash memory error. The panel detected a fault in the internal flash storage.
Perform a panel reset and attempt to reload the project. If the error persists, the internal flash memory may require replacement or the unit should be sent for repair.
Event ID: 60000: Screen saver or display fault. The display backlight has failed or the screen saver has activated unexpectedly.
Check display backlight lifetime. If the backlight has failed, the display unit requires replacement. Adjust screen saver settings in the panel Control Panel if activation is unintended.

Frequently Asked Questions

What PLC families are compatible with the SIMATIC MP 377?

The MP 377 supports communication with Siemens S7-200, S7-300, S7-400, and S7-1500 PLC families via MPI, PROFIBUS DP, and PROFINET interfaces. Third-party PLCs can also be connected using available communication drivers in WinCC flexible.

What software is required to program the MP 377?

The MP 377 is configured using Siemens WinCC flexible 2008 or later. Projects are created on a PC and transferred to the panel via USB, Ethernet, or SD card.

What is the supply voltage for the 6AV6446-7BA41-2BY4?

The panel requires a 24 V DC supply voltage. Ensure the power supply can deliver sufficient current, typically at least 2 A, for reliable operation.

Can the MP 377 be used with PROFINET?

Yes, the MP 377 features an integrated PROFINET interface (RJ45) supporting 10/100 Mbit/s Ethernet communication for PLC connectivity and project transfer.

What is the front protection rating of the MP 377?

The front panel of the MP 377 carries an IP65 protection rating, making it suitable for installation in enclosures where dust and water jets may be present.

Troubleshooting

Display remains blank after power on

Measure 24 V DC at the power supply connector on the rear of the panel. Check that the supply voltage is within the specified range. Inspect the display backlight by listening for startup sounds or checking if the touch screen responds.

If supply voltage is correct but display is blank, the backlight inverter or display unit may have failed. Replace the display assembly or send the unit for repair. If no voltage is present, check the external power supply and wiring.

HMI panel fails to establish communication with the PLC

Verify the PROFINET IP address or MPI/PROFIBUS address configured in the HMI project matches the panel and PLC settings. Use the panel's Control Panel to check network settings. Inspect cables and connectors for damage.

Correct any address mismatches in the WinCC flexible project and retransfer. Replace damaged cables or connectors. Ensure the PLC is in RUN mode and the network switch or hub is functioning correctly.

Touch screen does not respond or responds inaccurately

Check if the touch screen is physically damaged or contaminated. Attempt to recalibrate the touch screen using the Siemens calibration utility accessible from the panel's Control Panel during startup.

Clean the touch screen surface with a soft, dry cloth. Perform a touch screen recalibration. If the touch screen continues to malfunction after recalibration, the touch overlay or the panel itself may require replacement.

Project transfer to the panel fails

Confirm the panel is set to Transfer mode via the Control Panel or by pressing the transfer button during startup. Check the USB or Ethernet connection between the engineering PC and the panel. Verify that the WinCC flexible version on the PC is compatible with the panel firmware.

Switch the panel to Transfer mode and retry the download. Update the panel firmware if a version mismatch is detected. Try an alternative transfer method such as SD card if USB or Ethernet transfer continues to fail.

Panel repeatedly restarts or crashes during runtime

Check for overheating by verifying the ambient temperature is within the 0 to 50 °C operating range and that ventilation around the panel is adequate. Review the system event log in WinCC flexible for recurring event IDs that may indicate a software or memory fault.

Ensure adequate ventilation and reduce ambient temperature if necessary. Reload the project to the panel to rule out a corrupted runtime image. If the issue persists, perform a factory reset and reload the project. Persistent hardware faults may require the unit to be serviced or repaired.

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