Siemens 6AV6146-3QQ41-0LY4 SIMATIC MP 377

Name: Siemens 6AV6146-3QQ41-0LY4 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6146-3QQ41-0LY4
Price: 2995.00 EUR
Availability: InStock

€ 2.995,00

Condition

Clear

SKU: 6AV6146-3QQ41-0LY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6146-3QQ41-0LY4 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 19-inch widescreen TFT display and is part of the SIMATIC MP 377 series, which represents Siemens' high-performance multi-panel range capable of running both WinCC flexible and standard Windows-based applications simultaneously.

The MP 377 with part number 6AV6146-3QQ41-0LY4 is equipped with a resistive touchscreen and an integrated keyboard interface, providing flexible operator interaction. It features a powerful processor, 256 MB RAM, and 256 MB flash memory for application storage. Communication interfaces include PROFIBUS DP, PROFINET/Ethernet (RJ45), USB ports, and a serial RS-232/RS-422/RS-485 interface, enabling integration into a wide range of automation network architectures. The panel operates on 24 V DC and carries CE and UL certifications.

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-application capability make it suitable for complex SCADA-level visualization tasks at the machine or line level, where operators require simultaneous access to process data, recipes, alarms, and trend displays.

Technical Specifications

Display Size	19 inch
Display Type	TFT widescreen
Display Resolution	1280 x 1024 px
Display Colors	16.7 million
Touch Technology	Resistive touchscreen
Input Voltage	24 V DC
Power Consumption	Approx. 60 W
RAM	256 MB
Flash Memory	256 MB
Communication Interface	PROFIBUS DP, PROFINET/Ethernet (RJ45), USB, RS-232/RS-422/RS-485
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: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been lost.
Check PROFIBUS or PROFINET cabling and termination resistors. Verify PLC is in RUN mode and the configured station address matches the hardware configuration.
Event ID: 10001: Tag read error. The HMI panel cannot read the value of a configured tag from the controller.
Verify the tag address exists in the PLC program and that the data block or memory area is accessible. Check for address conflicts in the project configuration.
Event ID: 10002: Tag write error. A write operation to a PLC tag has failed.
Ensure the target PLC memory area is not write-protected. Confirm the PLC is in RUN mode and the tag address is correctly configured in WinCC flexible.
Event ID: 20000: System memory low. Available RAM on the HMI panel is critically low, which may affect panel performance or stability.
Close unnecessary runtime applications or scripts. Reduce the number of simultaneously active screens or trend buffers. Consider a panel restart.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the panel has failed or been interrupted.
Check the USB or Ethernet transfer connection. Ensure the panel is in Transfer mode and that the correct interface is selected in WinCC flexible project settings.
Event ID: 50000: Backup/restore error. A backup or restore operation of the panel project or data has failed.
Verify sufficient free flash memory on the panel. Check the integrity of the backup medium (USB stick or memory card) and retry the operation.
Event ID: 70000: Screen object configuration error. A screen object references an invalid or missing tag, image, or resource.
Open the project in WinCC flexible and resolve all compiler warnings related to missing resources or invalid tag references before re-downloading the project.

Frequently Asked Questions

What software is used to configure the SIMATIC MP 377 6AV6146-3QQ41-0LY4?

The MP 377 is configured using Siemens WinCC flexible 2008 or later. It can also run standard Windows applications alongside the WinCC flexible runtime environment.

What communication protocols does the MP 377 support?

The panel supports PROFIBUS DP, PROFINET/Industrial Ethernet, MPI, and serial protocols via RS-232/RS-422/RS-485, allowing connection to a wide range of Siemens and third-party controllers.

What is the display size and resolution of the 6AV6146-3QQ41-0LY4?

This variant features a 19-inch widescreen TFT display with a resolution of 1280 x 1024 pixels and 16.7 million colors.

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

Yes, the MP 377 is fully compatible with SIMATIC S7-300 and S7-400 PLCs via MPI, PROFIBUS DP, or PROFINET, and can also communicate with S7-1200 and S7-1500 controllers using appropriate drivers.

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 panel power connector. Check that the supply is within the specified tolerance. Inspect the panel for any visible damage to the power input terminals.

Ensure the 24 V DC supply is stable and within range. If the supply is correct but the display remains blank, the internal power supply board or backlight inverter may be faulty and require replacement or professional repair.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touchscreen via the panel's Start Center or Control Panel settings. Check for physical damage, contamination, or excessive pressure marks on the screen surface.

Perform a touchscreen recalibration through the Windows CE Control Panel. If calibration does not resolve the issue, the resistive touch foil may be worn or damaged and will need to be replaced.

Panel cannot establish communication with the PLC

Verify the PROFIBUS address or IP address settings on both the panel and the PLC. Check all cables and connectors for continuity and correct termination. Confirm the PLC is powered and in RUN mode.

Correct any address mismatches in the WinCC flexible project and panel settings. Replace damaged cables or connectors. Ensure PROFIBUS termination resistors are enabled only at the two physical ends of the bus segment.

Project transfer from PC to panel fails

Check the transfer interface selected in WinCC flexible matches the physical connection used (USB or Ethernet). Confirm the panel is set to Transfer mode via the Start Center.

Switch the panel to Transfer mode, select the correct interface in WinCC flexible, and retry the download. If using Ethernet, verify the PC and panel are on the same subnet and no firewall is blocking the transfer port.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or ripple using an oscilloscope or multimeter. Review the WinCC flexible project for memory-intensive scripts or excessive tag polling rates that could overload the panel CPU.

Stabilize the power supply and ensure it is adequately rated for the panel load. Optimize the WinCC flexible project by reducing script complexity and tag update cycles. If the issue persists, perform a panel firmware update or restore the factory image.

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