Siemens 6AV6446-6DA40-1BY5 SIMATIC MP 377

SKU: 6AV6446-6DA40-1BY5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-6DA40-1BY5 is a Multi Panel belonging to the SIMATIC MP 377 series, part of Siemens' SIMATIC HMI product family. This panel is a high-performance operator interface device designed for demanding industrial visualization and control tasks. It runs on the Windows CE operating system and is engineered for use with Siemens SIMATIC automation systems as well as third-party controllers.

The MP 377 features a 15-inch TFT widescreen display with a resolution of 1024 x 768 pixels and 64,000 colors, providing clear and detailed process visualization. It supports both touch and key operation, offering flexibility in operator interaction. Communication interfaces include PROFIBUS DP, PROFINET (Ethernet), USB, and serial interfaces, enabling integration into a wide range of network architectures. The panel is equipped with 12 MB user memory for project data and supports Siemens WinCC flexible runtime software for configuration and visualization.

The SIMATIC MP 377 is widely deployed in manufacturing, process industries, automotive production, and machine tool applications where robust and reliable HMI solutions are required. Its combination of a large display, versatile communication options, and compatibility with SIMATIC S7 PLCs makes it suitable for complex machine visualization, process monitoring, and operator control stations in both discrete and continuous production environments.

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 touch screen
Operating Voltage	24 V DC
Power Consumption	Max. 60 W
Communication Interface	PROFIBUS DP, PROFINET (Ethernet RJ45), USB, RS-422/RS-485
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 MP 377

Common Error Codes & System Events

Event ID: 1000: Configuration error detected during project load; project data may be corrupt or incompatible with the panel firmware version.
Reload the project using WinCC flexible. Verify that the firmware version on the panel matches the WinCC flexible version used to compile the project.
Event ID: 1003: Connection to the PLC has been lost or could not be established; communication timeout on the configured interface.
Check PROFIBUS or PROFINET cable connections and termination resistors. Verify PLC address settings and ensure the PLC is in RUN mode.
Event ID: 10000: System memory low; available runtime memory is insufficient for the current project or active screens.
Reduce the number of simultaneously active screens or objects. Optimize the project by reducing graphical complexity or splitting into smaller screens.
Event ID: 1004: Tag read/write error; the panel cannot read or write a configured tag from/to the PLC.
Verify the tag address in WinCC flexible matches the actual PLC data block or memory address. Check PLC program for correct data area definitions.
Event ID: 20000: Backup battery low or missing; the real-time clock and retentive data may not be maintained during power loss.
Replace the internal backup battery with the correct type as specified in the device manual. Perform a battery replacement procedure to avoid data loss.
Event ID: 40000: Firmware update error; the firmware transfer to the panel was interrupted or the firmware file is incompatible.
Restart the firmware update process using ProSave or WinCC flexible. Ensure the correct firmware version for the MP 377 15-inch variant is used and the USB or Ethernet connection is stable.
Event ID: 1300: Printer communication error; the configured printer is not responding or is not connected.
Check the printer connection on the USB port. Verify the printer driver settings in the panel configuration and ensure the printer is powered on and online.

Frequently Asked Questions

What software is used to configure the SIMATIC MP 377?

The MP 377 is configured using Siemens WinCC flexible software. Projects are compiled in WinCC flexible and transferred to the panel via Ethernet, USB, or a memory card.

Which PLCs are compatible with the SIMATIC MP 377?

The MP 377 is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via PROFIBUS DP or PROFINET. It also supports communication with third-party controllers using standard protocols such as Modbus RTU/TCP and OPC.

What is the input voltage for the 6AV6446-6DA40-1BY5?

The panel operates on 24 V DC supply voltage. The power supply must be capable of providing sufficient current to meet the panel's maximum power consumption of 60 W.

Does the MP 377 support remote access or VNC?

Yes, the SIMATIC MP 377 supports VNC (Virtual Network Computing), allowing remote monitoring and operation of the panel interface from a PC or other VNC-compatible client over an Ethernet network.

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

The front panel of the MP 377 achieves an IP65 protection rating when correctly installed in a panel cutout with the supplied seal, making it resistant to dust ingress and low-pressure water jets.

Troubleshooting

Display remains blank after power is applied

Check the 24 V DC supply voltage at the panel's power connector. Measure voltage under load to rule out supply issues. Inspect the internal fuse if accessible.

Ensure the 24 V DC supply is within the specified tolerance. If the supply is correct and the display remains blank, the internal power supply board or backlight inverter may be faulty and 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 or contamination on the screen surface.

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

Panel cannot establish communication with the PLC via PROFIBUS

Verify the PROFIBUS cable wiring, connector pin assignments, and bus termination at both ends of the network. Check the PROFIBUS address configured on the panel matches the project settings.

Correct any wiring faults and ensure termination resistors are active only at the two physical ends of the PROFIBUS segment. Confirm the panel's PROFIBUS address in the WinCC flexible project and re-download the project if necessary.

Project fails to transfer from PC to the panel

Check the USB or Ethernet connection between the PC and the panel. Verify that the panel is in Transfer mode and that the correct communication channel is selected in WinCC flexible or ProSave.

Switch the panel to Transfer mode via the Start Center. Ensure firewall settings on the PC do not block WinCC flexible communication. Try an alternative transfer method (USB instead of Ethernet) to isolate the issue.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or ripple that may cause instability. Review the system event log in the panel for recorded event IDs prior to the reboot.

Stabilize the power supply and ensure adequate current capacity. If the issue persists, reduce project complexity, update the panel firmware to the latest version, and check for overheating by verifying ambient temperature and ventilation around the panel.

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