Siemens 6AV6446-7AA41-3BY4 SIMATIC MP 377

Name: Siemens 6AV6446-7AA41-3BY4 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-7AA41-3BY4
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-7AA41-3BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-7AA41-3BY4 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 touchscreen and supports multiple communication interfaces including PROFIBUS DP and Ethernet (PROFINET), enabling seamless integration into existing automation networks. It offers substantial onboard memory and supports the WinCC flexible runtime software for advanced process visualization. The unit is built to industrial standards with a robust aluminum front panel, ensuring durability in harsh environments, and carries relevant certifications including CE and UL markings.

The SIMATIC MP 377 is widely deployed in industries such as automotive manufacturing, food and beverage processing, chemical plants, and water treatment facilities. Its large display area and multi-protocol communication capability make it suitable for complex machine control panels and process control stations where operators require clear visualization of multiple process variables simultaneously. The panel integrates directly with Siemens S7-300 and S7-400 PLCs as well as third-party controllers via standard protocols.

Technical Specifications

Display Size	15 inch
Display Type	TFT widescreen
Display Resolution	1024 x 768 px
Display Colors	64,000 colors
Touch Technology	Resistive touchscreen
Operating System	Windows CE 6.0
Input Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	PROFIBUS DP, Ethernet (PROFINET), USB, RS-422/485
Memory (User)	12 MB
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
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 1000000: System startup event; the HMI device has been powered on and the runtime software is initializing.
No action required under normal conditions. If startup fails to complete, check the 24 V DC supply and verify the project file integrity.
Event ID: 1000002: Runtime software has been stopped or terminated unexpectedly.
Restart the HMI panel. If the fault persists, reload the project using WinCC flexible or SIMATIC WinCC and check for software corruption.
Event ID: 110000: Communication connection to the PLC has been lost or interrupted.
Check PROFIBUS or Ethernet cabling and connector integrity. Verify PLC is powered and the correct communication parameters are configured in the project.
Event ID: 110001: Communication connection to the PLC has been re-established after a previous loss.
No corrective action required. Monitor for recurring disconnections which may indicate an intermittent cable or network fault.
Event ID: 120000: Tag read/write error; the HMI was unable to read or write a configured tag from the controller.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for address changes.
Event ID: 130000: Recipe data transfer error; a recipe could not be transferred to or from the PLC.
Check recipe configuration in the project. Ensure sufficient memory is available and that the target PLC data area is correctly addressed.
Event ID: 140000: Data log or alarm log memory is full; the HMI cannot write further log entries.
Archive or delete existing log data. Increase the allocated log memory in the WinCC flexible project settings and reload the project.
Event ID: 160000: Backup battery low or missing; the internal buffer battery voltage is below the required threshold.
Replace the internal backup battery with the correct Siemens replacement type. Refer to the MP 377 operating instructions for battery replacement procedure.

Frequently Asked Questions

What communication protocols does the SIMATIC MP 377 (6AV6446-7AA41-3BY4) support?

The MP 377 supports PROFIBUS DP, PROFINET (Ethernet), USB, and RS-422/485 serial communication. This allows connection to Siemens S7 PLCs as well as third-party controllers using standard protocols.

Which HMI software is used to configure and program this panel?

The MP 377 is configured using Siemens WinCC flexible or SIMATIC WinCC (TIA Portal compatible versions). The runtime software runs directly on the panel under Windows CE 6.0.

Is the 6AV6446-7AA41-3BY4 compatible with Siemens S7-300 and S7-400 PLCs?

Yes, the MP 377 is fully compatible with S7-300 and S7-400 PLCs via PROFIBUS DP or PROFINET. It can also communicate with S7-1200 and S7-1500 PLCs using Ethernet connections.

What is the display size and resolution of this panel?

The panel features a 15-inch widescreen TFT display with a resolution of 1024 x 768 pixels and supports up to 64,000 colors.

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

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

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check that the supply is within the specified tolerance. Inspect the internal fuse if accessible.

Restore the 24 V DC supply to within specification. If the supply is correct and the display remains blank, the internal power supply board or backlight inverter may require replacement.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touchscreen via the Windows CE control panel or the SIMATIC HMI startup menu. Check for physical damage or contamination on the screen surface.

Perform a touchscreen recalibration. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the resistive touch overlay may need to be replaced.

HMI cannot establish communication with the PLC

Verify the PROFIBUS address or IP address settings on both the HMI and PLC match the project configuration. Check all cables and connectors for damage or loose connections.

Correct any address mismatches in the WinCC flexible project and reload it to the panel. Replace damaged cables or connectors. Ensure the PROFIBUS termination resistors are correctly set at both ends of the network.

Panel repeatedly restarts or crashes during runtime

Check the 24 V DC supply for voltage fluctuations or noise. Review the Windows CE event log for software errors. Verify the project file is not corrupted.

Stabilize the power supply using a suitable filter or UPS. Reload the project from WinCC flexible. If the issue persists, perform a factory reset and reload the operating system image using the Siemens ProSave tool.

Project transfer from engineering PC fails

Verify the Ethernet or USB connection between the PC and the panel. Ensure the panel is in transfer mode and that the correct IP address or COM port is configured in WinCC flexible.

Switch the panel to transfer mode via the start center. Confirm firewall settings on the PC are not blocking the transfer. Use a direct Ethernet connection rather than a network switch if possible to rule out network issues.

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