Siemens 6AV6446-4AA41-0BY4 SIMATIC MP 377

Name: Siemens 6AV6446-4AA41-0BY4 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-4AA41-0BY4
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-4AA41-0BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-4AA41-0BY4 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 machine-level visualization and operator control tasks. It runs on the Windows CE operating system and is configured and operated using Siemens WinCC flexible or TIA Portal WinCC software.

The MP 377 15" Touch features a resistive touchscreen interface with a display resolution of 1024 x 768 pixels (XGA) and 64,000 colors. It is equipped with 12 MB user memory for project data and supports a wide range of communication interfaces including PROFIBUS DP, PROFINET IO (via Ethernet), MPI, and USB ports. The panel also includes an SD/MMC card slot for data logging and project transfer, and supports integration with Siemens S7-300, S7-400, and other PLC families.

The SIMATIC MP 377 is widely deployed in manufacturing, process automation, and machine building applications where a robust, mid-to-large format HMI is required. Its compatibility with PROFIBUS and PROFINET makes it suitable for integration into existing Siemens automation architectures. Typical industries include automotive, food and beverage, chemical processing, and general industrial machinery.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 px (XGA)
Display Colors	64,000 colors
Display Type	TFT
Touch Technology	Resistive touchscreen
Operating System	Windows CE 6.0
User Memory	12 MB
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	PROFIBUS DP, MPI, PROFINET IO (Ethernet RJ45), 2x USB
Memory Card Slot	SD/MMC
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. Connection to the configured controller cannot be established.
Check PROFIBUS/MPI/Ethernet cabling and termination resistors. Verify PLC address settings match HMI project configuration. Restart both PLC and HMI panel.
Event ID: 10001: Connection to PLC interrupted during operation. The HMI lost communication with the controller.
Inspect network cables and connectors for damage. Verify PLC is in RUN mode. Check for EMC interference on the communication line.
Event ID: 20000: Project download error. The project transfer from the engineering PC to the HMI panel failed.
Verify the correct transfer channel is selected (Ethernet or USB). Ensure the panel is in Transfer mode. Check firewall settings on the engineering PC.
Event ID: 40000: Tag read/write error. A configured tag could not be read from or written to the PLC.
Verify the tag address in the WinCC project matches the actual PLC data block or memory address. Check PLC program for address conflicts.
Event ID: 70000: System memory low. Available user memory on the HMI panel is insufficient for the current project.
Reduce project size by optimizing graphics and scripts. Delete unused data logs or recipe files. Consider using an SD card for extended storage.
Event ID: 110000: Backup battery low or missing. The internal buffer battery voltage is below the required threshold.
Replace the internal buffer battery with the correct Siemens replacement battery. Perform a backup of project data before replacement.
Event ID: 130000: Operating system error or panel startup failure. The panel fails to boot correctly into the Windows CE environment.
Perform a factory reset via the panel's loader menu. Re-transfer the HMI project. If the issue persists, the internal flash memory or hardware may require service.

Frequently Asked Questions

What software is used to program the SIMATIC MP 377?

The MP 377 is configured using Siemens WinCC flexible 2008 or WinCC (TIA Portal) for compatible versions. Projects are transferred to the panel via Ethernet, USB, or SD card.

Which PLCs are compatible with the Siemens 6AV6446-4AA41-0BY4?

The MP 377 supports communication with Siemens S7-200, S7-300, S7-400, and S7-1200/1500 PLCs via MPI, PROFIBUS DP, or PROFINET IO. Third-party PLCs can also be connected using available drivers.

What is the display size and touch technology of this panel?

This panel features a 15-inch TFT display with a resolution of 1024 x 768 pixels and uses a resistive touchscreen for operator input.

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

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.

Can the MP 377 log data to external storage?

Yes, the MP 377 supports data logging to an SD/MMC card inserted in the onboard card slot, as well as to USB storage devices via the USB ports.

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply terminals. Measure voltage at the panel connector. Inspect the internal fuse if accessible.

Verify and restore the 24 V DC supply. If voltage is correct and the display remains blank, the backlight inverter or internal power board may be faulty and require replacement or professional repair.

Touchscreen does not respond or responds inaccurately

Determine whether the issue is a complete lack of response or positional inaccuracy. Access the Windows CE control panel to run the touch calibration utility.

Recalibrate the touchscreen via the Siemens loader menu or Windows CE control panel. If calibration does not resolve the issue, the resistive touch overlay may be damaged and require replacement.

HMI panel cannot establish communication with the PLC

Verify the communication cable type and wiring (MPI, PROFIBUS, or Ethernet). Check that the PLC address and network parameters in the HMI project match the physical PLC configuration.

Correct any address mismatches in the WinCC project and re-download. Replace or reseat communication cables. Ensure PROFIBUS termination resistors are correctly placed at both ends of the bus.

Project transfer fails from engineering PC to panel

Confirm the panel is set to Transfer mode via the loader menu. Check the selected transfer channel (Ethernet or USB) and verify network connectivity between PC and panel.

Switch the panel to Transfer mode manually. Disable PC firewall temporarily during transfer. If using Ethernet, ensure both devices are on the same subnet. Re-attempt the project download using WinCC flexible or TIA Portal.

Panel reboots repeatedly or freezes during operation

Check for adequate 24 V DC supply stability using a multimeter or oscilloscope. Review the project for memory overload or script errors that may cause system instability.

Ensure the power supply has sufficient current capacity and stable output. Optimize the WinCC project to reduce memory usage. Perform a factory reset and re-transfer the project if the issue persists after hardware checks.

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