Siemens 6AV6446-7AA41-1BY3 SIMATIC MP 377

Name: Siemens 6AV6446-7AA41-1BY3 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-7AA41-1BY3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-7AA41-1BY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-7AA41-1BY3 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 visualization and operator control tasks in industrial automation environments. It runs the Windows CE operating system and is configured and programmed using Siemens WinCC flexible or TIA Portal software.

The MP 377 15" Touch panel is equipped with a resistive touchscreen and delivers a display resolution of 1024 x 768 pixels (XGA) with 64,000 colors. It provides multiple communication interfaces including PROFIBUS DP, PROFINET (Ethernet), USB, and a serial RS-422/RS-485 interface, enabling integration with a wide range of Siemens and third-party controllers. The panel includes 12 MB user memory for project data and supports MPI/PROFIBUS communication at up to 12 Mbit/s, as well as 10/100 Mbit/s Ethernet connectivity.

The SIMATIC MP 377 is widely deployed in machine-level and plant-level visualization applications across industries such as automotive manufacturing, food and beverage processing, chemical production, and general machine building. Its large display size and robust communication capabilities make it suitable for complex HMI applications requiring detailed process visualization, recipe management, alarm logging, and trend display. The panel is designed for front-panel mounting in control cabinets and operator stations.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	64,000 colors
Display Type	TFT LCD
Touch Technology	Resistive touchscreen
Operating System	Windows CE
User Memory	12 MB
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 40 W
Communication Interface	PROFIBUS DP, PROFINET (Ethernet 10/100 Mbit/s), MPI, RS-422/RS-485, USB
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	Front panel mounting
Certifications	CE, UL, cULus

Common Error Codes and System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC or controller. The configured connection cannot be established.
Check the communication cable and connector integrity. Verify the PLC address settings and communication parameters in the WinCC flexible project match the controller configuration.
Event ID: 10001: Connection to the PLC was interrupted during runtime operation.
Inspect the PROFIBUS or Ethernet cable for damage. Verify network topology and termination resistors on PROFIBUS. Restart the HMI and PLC if the connection is not automatically restored.
Event ID: 20000: Tag read error. The HMI panel cannot read the value of a configured tag from the controller.
Verify the tag address in the WinCC flexible project is correct and matches the PLC data block or memory area. Check that the PLC program is running and the address exists.
Event ID: 20001: Tag write error. The HMI panel cannot write a value to the configured tag address in the controller.
Confirm the tag address is correct and that the PLC memory area is not write-protected. Check user authorization levels configured in the HMI project.
Event ID: 40000: Project download error. Transfer of the HMI project to the panel failed or was interrupted.
Check the transfer cable or network connection between the engineering PC and the panel. Ensure the panel is in Transfer mode and that WinCC flexible or TIA Portal is using the correct interface settings.
Event ID: 50000: System memory low. Available runtime memory on the panel is insufficient for the current project.
Reduce the number of open screens or the complexity of the project. Archive or delete unnecessary alarm logs and data records stored on the panel to free memory.
Event ID: 70000: Internal device error or hardware fault detected on the panel.
Perform a panel restart. If the error persists, back up the project, perform a factory reset, and reload the project. Contact Siemens technical support if the fault recurs after reset.
Event ID: 60000: Backup battery low or battery failure. The real-time clock data may be lost on power failure.
Replace the internal backup battery with the correct replacement type. After replacement, reset the system clock and verify time-stamped alarm logs are functioning correctly.

Frequently Asked Questions

What communication interfaces are available on the 6AV6446-7AA41-1BY3?

The MP 377 15" Touch provides PROFIBUS DP/MPI, PROFINET (Ethernet 10/100 Mbit/s), RS-422/RS-485 serial, and USB interfaces, allowing connection to a wide range of Siemens S7 PLCs and third-party controllers.

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

The panel is configured using Siemens WinCC flexible 2008 or later, and is also supported in the TIA Portal environment via WinCC. Projects are transferred to the panel via Ethernet or PROFIBUS.

What is the supply voltage required for the MP 377 15" Touch?

The panel requires a 24 V DC power supply. Ensure the power source is capable of supplying sufficient current, typically around 2 A, to support stable operation.

Is the front of the panel protected against dust and water ingress?

Yes, the front panel carries an IP65 protection rating, making it suitable for installation in environments where dust and water spray may be present. The rear of the unit is rated IP20.

Can the MP 377 communicate with non-Siemens PLCs?

Yes, via the RS-422/RS-485 serial interface and Ethernet port, the MP 377 can communicate with third-party controllers using supported protocols such as Modbus RTU or TCP, depending on the driver configuration in WinCC flexible.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check that the voltage is within the acceptable range and that polarity is correct. Inspect the internal fuse if accessible.

Correct any wiring errors or supply voltage issues. If the supply is confirmed good 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 through the panel's Start Center or Control Panel settings. Check for physical damage, contamination, or excessive pressure on the screen surface.

Perform a touchscreen recalibration via the Windows CE Control Panel. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the touchscreen overlay may need to be replaced.

HMI project fails to transfer from engineering PC to the panel

Verify the panel is set to Transfer mode via the Start Center. Check the Ethernet or PROFIBUS connection and confirm the IP address or PROFIBUS address in WinCC flexible matches the panel settings.

Correct the communication settings in the WinCC flexible transfer dialog. Disable any firewall software on the engineering PC that may block the transfer. Re-attempt the download after confirming all settings are aligned.

Panel displays communication errors or tags show invalid values at runtime

Check the physical connection of the PROFIBUS or Ethernet cable. Verify the PLC is in RUN mode and that the tag addresses in the HMI project match the actual PLC data structure.

Replace or reseat the communication cable. Correct any mismatched tag addresses in the WinCC flexible project and re-download. For PROFIBUS, verify bus termination and check for address conflicts on the network.

Panel restarts unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or instability under load. Review the alarm and event log on the panel for system error event IDs that may indicate the cause of the restart.

Stabilize the power supply, ensuring adequate current capacity. If the issue persists, perform a firmware update to the latest version supported for the MP 377. A factory reset followed by project reload may resolve software-related instability.

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