Siemens 6AV6446-6BA40-0BY4 MP 377

€ 2.995,00

SKU: 6AV6446-6BA40-0BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-6BA40-0BY4 is a Multi Panel (MP 377) belonging to the SIMATIC HMI family, designed for high-performance human-machine interface applications in industrial automation environments. This panel operates as a standalone visualization unit capable of running SCADA-level applications and is part of the SIMATIC MP 377 series, which offers a 15-inch widescreen display format. It is engineered for demanding industrial environments where reliable process visualization and operator control are essential.

The MP 377 (6AV6446-6BA40-0BY4) features a 15-inch TFT display with a resolution of 1024 x 768 pixels and 64,000 colors, providing clear and detailed process visualization. It supports multiple communication interfaces including PROFIBUS DP and Ethernet (PROFINET), enabling seamless integration with Siemens S7 PLCs and third-party controllers. The panel runs on Windows CE and is configurable via Siemens WinCC flexible or TIA Portal WinCC, with onboard flash memory and support for external USB and CF card storage. A resistive touch screen combined with function keys provides flexible operator input options.

The MP 377 is widely deployed in the manufacturing, automotive, chemical, water treatment, and food and beverage industries, where complex process visualization and operator interaction are required at the machine or plant level. Its robust industrial housing, wide operating temperature range, and compliance with relevant IEC and CE standards make it suitable for installation in control cabinets and operator panels in harsh production environments. The panel's compatibility with the broader SIMATIC ecosystem allows straightforward integration into existing Siemens automation architectures.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels
Display Colors	64,000 colors
Display Type	TFT LCD
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 40 W
Communication Interface	PROFIBUS DP, Ethernet (PROFINET), RS-422/RS-485, USB
Memory	12 MB user memory (onboard flash); CF card and USB expansion supported
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 HMI MP 377

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 interrupted.
Check PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC is powered and running. Confirm correct station address and IP settings in the WinCC flexible project.
Event ID: 10001: Connection to PLC timed out. The HMI did not receive a response from the controller within the configured timeout period.
Check network or fieldbus wiring. Verify PLC program is running and communication parameters match on both sides. Increase timeout value in WinCC flexible connection settings if necessary.
Event ID: 20000: Tag read error. The HMI panel was unable to read a configured tag from the PLC.
Verify the tag address exists in the PLC and the data block or memory area is accessible. Check that the PLC program has not been modified to remove or relocate the referenced address.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the panel failed.
Ensure the panel is in transfer mode. Check the Ethernet or USB connection between the engineering PC and the panel. Verify the WinCC flexible version is compatible with the panel firmware version.
Event ID: 50000: System memory low. Available working memory on the HMI panel is critically low, which may affect runtime performance.
Reduce the number of active screens or logged data. Archive and clear alarm and data logs. Consider reducing project complexity or upgrading storage media.
Event ID: 70000: Firmware update error. An error occurred during a firmware update attempt on the panel.
Restart the panel and retry the firmware update using the ProSave tool. Ensure the correct firmware version for the MP 377 is used and that the power supply is stable during the update process.
Event ID: 110000: Recipe data error. A recipe could not be read from or written to the configured storage location.
Check that the CF card or USB storage device is properly inserted and not write-protected. Verify the recipe configuration in WinCC flexible and ensure sufficient free storage space is available.

Frequently Asked Questions

What PLC families are compatible with the Siemens MP 377 (6AV6446-6BA40-0BY4)?

The MP 377 is compatible with Siemens SIMATIC S7-300, S7-400, S7-1200, and S7-1500 PLCs via PROFIBUS DP or PROFINET/Ethernet. It also supports communication with third-party controllers using standard protocols such as Modbus TCP or serial Modbus.

What software is used to configure and program the MP 377 panel?

The MP 377 is configured using Siemens WinCC flexible 2008 or later. It is also supported within the TIA Portal environment using WinCC (TIA Portal), allowing integration into modern Siemens engineering workflows.

Does the MP 377 support data logging and alarm management?

Yes, the MP 377 supports data logging, trend displays, and alarm management natively within the WinCC flexible runtime environment. Logs can be stored on the internal flash memory, a CompactFlash card, or a USB storage device.

What is the supply voltage required for the 6AV6446-6BA40-0BY4?

The panel requires a 24 V DC power supply. It is recommended to use a regulated power supply with sufficient current capacity, typically at least 2 A, to ensure stable operation.

Can the MP 377 panel be used as a PROFIBUS master or slave?

The MP 377 operates as a PROFIBUS DP slave when communicating with a SIMATIC PLC acting as the DP master. It does not function as a PROFIBUS DP master in standard HMI operation.

Troubleshooting

Display remains blank after power is applied

Check that 24 V DC is present at the power supply terminals on the rear of the panel. Measure voltage at the connector and verify polarity. Inspect the internal fuse if accessible.

Correct any wiring errors or supply voltage issues. If the supply voltage is confirmed correct and 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 Windows CE control panel or the SIMATIC HMI startup menu. Check for physical damage or contamination on the screen surface.

Perform a touchscreen recalibration through the panel's Start Center. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the resistive touch overlay may be worn or damaged and should be replaced.

HMI cannot establish communication with the PLC

Verify the PROFIBUS address or IP address configured on the panel matches the settings in the WinCC flexible project and the PLC configuration. Check all physical cable connections and termination resistors on the PROFIBUS network.

Correct any address mismatches in the project configuration and reload the project to the panel. Replace damaged cables or connectors. Ensure PROFIBUS termination is applied only at the two physical ends of the network segment.

Panel repeatedly restarts or crashes during runtime

Check for overheating by verifying ambient temperature is within the 0 °C to +50 °C operating range and that ventilation around the panel is adequate. Review the alarm and system event logs for recurring event IDs.

Improve ventilation or reduce ambient temperature around the panel. If overheating is not the cause, the project may contain errors or the panel firmware may be corrupted. Reload the WinCC flexible project and, if necessary, perform a firmware update using ProSave.

CF card or USB storage device is not recognized by the panel

Remove and reinsert the CF card or USB device. Check the device in another system to confirm it is functional. Verify the storage device is formatted as FAT32 and is not write-protected.

Replace the storage device with a compatible, correctly formatted FAT32 device. Ensure the CF card is fully seated in the slot. If the panel consistently fails to recognize storage devices, the card reader or USB port hardware may require inspection or repair.

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