Siemens 6AV6446-6BA41-3BY4 SIMATIC MP 377

Name: Siemens 6AV6446-6BA41-3BY4 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-6BA41-3BY4
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-6BA41-3BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-6BA41-3BY4 is a Multi Panel belonging to the SIMATIC MP 377 series, part of Siemens' SIMATIC HMI product line. This panel is a high-performance operator interface device designed for demanding industrial visualization and control tasks. It features a 15-inch widescreen TFT display and runs on the Windows CE operating system, providing a robust platform for SCADA and HMI applications.

The MP 377 panel is equipped with a resistive touch screen and supports multiple communication interfaces including PROFIBUS DP and Ethernet (PROFINET), enabling seamless integration into modern industrial networks. It offers substantial onboard memory for project data and runtime applications, and supports USB ports for peripheral connectivity and data transfer. The unit is built to withstand harsh industrial environments, conforming to relevant IEC standards for electromagnetic compatibility and environmental protection.

The SIMATIC MP 377 is widely deployed in manufacturing automation, process industries, and machine building applications where a large, high-resolution display and reliable network connectivity are essential. It is compatible with Siemens SIMATIC S7 PLCs and is programmed using WinCC flexible or TIA Portal engineering software. Typical installations include control panels for production lines, packaging machinery, water treatment facilities, and energy management systems.

Technical Specifications

Display Size	15 inch
Display Type	TFT widescreen
Display Resolution	1024 x 768 px
Display Colors	64,000 colors
Touch Technology	Resistive touch screen
Operating System	Windows CE 6.0
Input Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	PROFIBUS DP, Ethernet (PROFINET), USB
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
IP Rating (Rear)	IP20
Mounting	Panel mounting
Certifications	CE, UL, cULus

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 cable connections and termination resistors. Verify PLC is powered and running. Confirm correct communication parameters (address, baud rate) in the HMI project configuration.
Event ID: 10001: Connection to PLC interrupted during runtime. The HMI panel lost communication with the configured controller.
Inspect network cabling and connectors for damage. Check PLC CPU status. Restart the HMI panel and PLC if the connection is not automatically re-established.
Event ID: 20000: Tag read error. The HMI panel was unable to read a configured tag from the PLC.
Verify the tag address in the HMI project matches the actual PLC data block or memory address. Ensure the PLC program is running and the relevant data area is accessible.
Event ID: 20001: Tag write error. The HMI panel was unable to write a value to the configured PLC tag.
Check that the target PLC address is not write-protected. Verify the data type of the tag matches the PLC variable. Confirm the PLC is in RUN mode.
Event ID: 40000: Project loading error. The HMI runtime was unable to load the configured project file from internal memory or external storage.
Transfer the project again using WinCC flexible or TIA Portal. Check internal flash memory for corruption. Ensure the project was compiled without errors before transfer.
Event ID: 50000: System memory low. Available RAM on the HMI panel is critically low, which may cause instability or application crashes.
Reduce the number of active screens, animations, or logged tags. Restart the panel to free memory. Optimize the HMI project to reduce memory usage.
Event ID: 60000: Backup battery low or missing. The internal buffer battery for retaining real-time clock data is discharged or not present.
Replace the internal lithium backup battery with the correct replacement type. Refer to the device manual for battery access procedure and correct battery specification.

Frequently Asked Questions

Which engineering software is used to program the SIMATIC MP 377?

The MP 377 can be programmed using Siemens WinCC flexible 2008 or later. It is also supported in the TIA Portal via the WinCC runtime advanced option for migration projects.

What communication protocols does the 6AV6446-6BA41-3BY4 support?

This panel supports PROFIBUS DP and PROFINET (Ethernet) for PLC communication, as well as USB ports for peripheral devices and project transfer. Serial MPI communication may also be supported via adapter.

Is the MP 377 compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the SIMATIC MP 377 is fully compatible with SIMATIC S7-300 and S7-400 PLCs via PROFIBUS DP or MPI, and with S7-300/400 and S7-1500 via PROFINET Ethernet.

What is the supply voltage for the 6AV6446-6BA41-3BY4?

The panel operates on a 24 V DC supply voltage. Ensure the power supply is adequately rated for the panel's power consumption of approximately 30 W.

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

The front panel of the MP 377 achieves an IP65 protection rating when correctly installed in a panel cutout with the supplied gasket, making it suitable for environments with dust and water spray.

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply connector. Measure voltage at the panel terminals. Inspect the internal fuse if accessible. Verify the power supply unit is capable of delivering sufficient current.

Ensure the 24 V DC supply is stable and within tolerance. Replace a blown internal fuse if found. If the backlight has failed, the panel may require backlight or display replacement by a qualified repair technician.

Touch screen does not respond or responds inaccurately

Determine whether the issue is a complete lack of response or positional inaccuracy. Check for physical damage or contamination on the touch surface. Attempt a touch screen recalibration from the Windows CE control panel.

Clean the touch surface with a soft, dry cloth. Recalibrate the touch screen via Start > Settings > Control Panel > Stylus in the Windows CE environment. If the touch controller hardware has failed, the touch panel assembly requires replacement.

HMI panel cannot establish communication with the PLC

Verify the communication cable type and wiring (PROFIBUS or Ethernet). Check that the PLC address configured in the HMI project matches the actual PLC address. Confirm the PLC is powered and in RUN mode.

Correct any address mismatches in the WinCC flexible or TIA Portal project and retransfer. Replace damaged cables or connectors. Ensure PROFIBUS termination resistors are correctly placed at both ends of the bus segment.

Project transfer from PC to panel fails

Check the transfer cable or Ethernet connection between the PC and the panel. Ensure the panel is set to Transfer mode. Verify that the WinCC flexible version used is compatible with the panel firmware version.

Switch the panel to Transfer mode via the Start Center or loader screen. Use a known-good USB or Ethernet cable. Update the panel firmware if a version mismatch is detected, following the Siemens firmware update procedure.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or instability under load. Review the system event log on the panel for recorded fault events. Assess whether the issue correlates with specific HMI screen changes or tag updates.

Stabilize the power supply and ensure adequate current capacity. Optimize the HMI project to reduce CPU load, particularly complex scripts or high-frequency tag polling. If hardware faults are suspected, return the unit for professional inspection and repair.

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