Siemens 6AV6446-7AA41-2BY4 MP 377

€ 1.995,00

SKU: 6AV6446-7AA41-2BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-7AA41-2BY4 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 features a 15-inch TFT display and runs on the Windows CE operating system, providing a robust and flexible platform for machine-level HMI applications. It is part of Siemens' established MP 377 series, which bridges the gap between standard operator panels and full PC-based systems.

The 6AV6446-7AA41-2BY4 is equipped with a resistive touchscreen and an integrated keypad, offering flexible operator input options. It supports multiple communication interfaces including PROFIBUS DP and Ethernet (PROFINET), enabling seamless integration into modern and legacy automation networks. The panel provides 12 MB of user memory for project data and is configurable using Siemens WinCC flexible or TIA Portal (WinCC), supporting structured project engineering. The unit operates on a 24 V DC supply and features a fanless design for reduced maintenance requirements.

The MP 377 15" Touch is widely deployed in the manufacturing, automotive, food and beverage, and chemical processing industries, where a large, clearly readable display and reliable operator interaction are essential. Its compatibility with SIMATIC S7 PLCs and support for both PROFIBUS and PROFINET makes it suitable for integration into existing Siemens automation architectures. The panel is also used in water treatment, packaging machinery, and energy management applications where continuous operation and robust construction are required.

Technical Specifications

Display Size	15 inch
Display Type	TFT color
Display Resolution	1024 x 768 px (XGA)
Display Colors	64,000 colors
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	PROFIBUS DP, Ethernet (PROFINET), RS-422/485, USB
User Memory	12 MB
Operating System	Windows CE 6.0
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
Series/Product Family	SIMATIC HMI MP 377

Common Error Codes and System Events

Event ID: 10000: Configuration error detected on startup; the project file may be corrupted or incompatible with the panel firmware version.
Re-transfer the project using WinCC flexible or TIA Portal. Ensure the firmware version on the panel matches the configuration software version used.
Event ID: 10001: Connection to the PLC has been lost or cannot be established; communication timeout on PROFIBUS or PROFINET interface.
Check network cabling and connector integrity. Verify PLC address settings and ensure the PLC is in RUN mode. Check PROFIBUS/PROFINET configuration in the project.
Event ID: 10002: Tag read/write error; the HMI cannot access a configured PLC variable or data block.
Verify that the referenced data block and variable addresses exist in the PLC program. Check for address mismatches between the HMI project and the PLC configuration.
Event ID: 20000: System memory low; available RAM on the panel is insufficient for the current project or runtime operation.
Reduce the number of active alarms, logged data, or open screens. Optimize the project to reduce memory usage and re-transfer to the panel.
Event ID: 40000: Alarm buffer overflow; the number of pending alarms exceeds the configured alarm buffer capacity.
Acknowledge and clear existing alarms. Increase the alarm buffer size in the project configuration if recurring overflow is observed.
Event ID: 50000: Recipe data error; a recipe transfer to or from the PLC has failed due to data inconsistency or communication interruption.
Check recipe configuration for correct variable mapping. Retry the transfer and verify PLC data block availability during the transfer operation.
Event ID: 70000: Data log error; the panel cannot write to the configured data log, possibly due to insufficient storage space or a corrupted log file.
Check available storage on the internal flash memory or external memory card. Delete old log files or increase the storage medium capacity.

Frequently Asked Questions

What engineering software is required to configure the MP 377 15" Touch (6AV6446-7AA41-2BY4)?

This panel is configured using Siemens WinCC flexible 2008 or later, or alternatively via the TIA Portal with WinCC. The project is then transferred to the panel via Ethernet, USB, or a memory card.

Which PLC families are compatible with this HMI panel?

The MP 377 is compatible with SIMATIC S7-200, S7-300, S7-400, and S7-1200/1500 PLCs via PROFIBUS DP or PROFINET/Ethernet. It also supports third-party controllers through configurable communication drivers.

What is the supply voltage for the 6AV6446-7AA41-2BY4?

The panel requires a 24 V DC power supply. The permissible voltage range is typically 19.2 V DC to 28.8 V DC.

Does this panel support remote access or web-based visualization?

Yes, the MP 377 supports Sm@rtAccess and Sm@rtService functions, allowing remote monitoring and control via a standard web browser over an Ethernet connection.

Can the panel firmware be updated in the field?

Yes, the firmware can be updated using a USB memory stick or via the ProSave tool over an Ethernet or USB connection. Always ensure the firmware version is compatible with the WinCC flexible project version in use.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check that the voltage is within the 19.2–28.8 V DC range. Inspect the internal fuse if accessible.

Correct the supply voltage if out of range. If voltage is correct but display remains blank, the internal power supply board or backlight inverter may be faulty and requires replacement or professional repair.

Touchscreen input is inaccurate or unresponsive

Determine whether the issue is a calibration drift or a hardware fault. Access the touch calibration utility from the Windows CE Control Panel or the Start Center on the panel.

Recalibrate the touchscreen using the built-in calibration tool. If the touchscreen remains unresponsive after calibration, inspect the touch controller connection internally or replace the touchscreen assembly.

Panel fails to establish communication with the PLC

Check the PROFIBUS address or IP address configuration on both the panel and the PLC. Verify physical cable connections and check for link activity LEDs on the Ethernet port.

Correct any address mismatches in the HMI project and PLC configuration. Replace damaged cables or connectors. Ensure the PLC is powered and in RUN mode before the HMI attempts to connect.

Panel repeatedly restarts or crashes during operation

Check for overheating by verifying the ambient temperature is within the 0–50 °C operating range. Review the Windows CE event log for software exceptions or memory errors.

Ensure adequate ventilation around the panel. If overheating is ruled out, re-transfer the HMI project to clear potential software corruption. If the problem persists, the panel may require a firmware reinstallation or hardware service.

Project transfer fails from engineering PC to panel

Verify the Ethernet or USB connection between the PC and the panel. Confirm that the panel is in transfer mode (accessible via the Start Center or loader menu) and that no firewall is blocking the ProSave or WinCC flexible transfer.

Disable any PC firewall temporarily during transfer. Restart both the panel and the engineering PC. If using Ethernet, ensure both devices are on the same subnet. Re-attempt the transfer using ProSave as a standalone tool if WinCC flexible transfer fails.

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