Siemens 6AV6644-7AA20-0BV0 MP 277

€ 1.778,00

SKU: 6AV6644-7AA20-0BV0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6644-7AA20-0BV0 is a Multi Panel (MP 277) belonging to the SIMATIC HMI family, designed for machine-level visualization and operator control in industrial automation environments. This panel features a 10.4-inch display and is part of the MP 277 series, which bridges the gap between basic operator panels and full PC-based visualization systems. It is engineered for demanding industrial conditions and integrates seamlessly with Siemens SIMATIC controllers.

The MP 277 (6AV6644-7AA20-0BV0) is equipped with a touch-sensitive screen and supports a wide range of communication interfaces including PROFIBUS DP and Ethernet (PROFINET), enabling flexible integration into existing automation networks. The panel runs on the Windows CE operating system and supports WinCC flexible runtime for project engineering. It offers 12 MB of user memory for project data, a CompactFlash card slot for data logging and recipe management, and USB ports for peripheral connectivity. The unit operates on 24 V DC supply voltage and features a robust aluminum front panel with IP65 protection on the front face.

The MP 277 is widely deployed in manufacturing, automotive, food and beverage, chemical, and packaging industries where reliable machine-level HMI is required. Its combination of touch operation, network connectivity, and compatibility with the SIMATIC S7 controller family makes it suitable for complex machine visualization tasks. The panel is commonly used for process monitoring, alarm management, recipe handling, and trend display on standalone machines and production lines.

Technical Specifications

Display Size	10.4 inch
Display Resolution	640 x 480 pixels (VGA)
Display Colors	256 colors
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 18 W
User Memory	12 MB
Operating System	Windows CE 5.0
Communication Interface	PROFIBUS DP, Ethernet (PROFINET), RS-422/485, USB
IP/Protection Rating	IP65 (front), IP20 (rear)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
Dimensions (W x H x D)	315 x 245 x 60 mm
Panel Cutout	302 x 232 mm
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI MP 277

Common Error Codes & System Events

Event ID: 1000: Configuration error detected during startup; the project loaded on the panel contains configuration inconsistencies.
Re-transfer the project using WinCC flexible. Verify the project configuration for missing tags or incorrect controller connections.
Event ID: 10000: Communication error with the configured PLC; the HMI panel cannot establish or maintain a connection to the controller.
Check PROFIBUS or Ethernet cabling and connectors. Verify the PLC address settings match the HMI project configuration. Confirm the PLC is powered and in RUN mode.
Event ID: 10001: Tag read error; the HMI is unable to read one or more configured tags from the connected controller.
Verify the tag addresses in the WinCC flexible project match the actual PLC data block or memory addresses. Check for PLC program changes that may have altered the data structure.
Event ID: 40000: Recipe data error; an error occurred during reading or writing of recipe records.
Check the CompactFlash card for errors or insufficient storage space. Re-transfer recipe data and verify recipe configuration in WinCC flexible.
Event ID: 20000: Alarm buffer overflow; the number of pending alarms has exceeded the buffer capacity.
Acknowledge and clear existing alarms. Review the alarm configuration in WinCC flexible to optimize alarm handling and buffer size settings.
Event ID: 50000: Data log error; the panel was unable to write process values to the configured data log.
Check the CompactFlash card for available space and file system integrity. Verify data log configuration in WinCC flexible and ensure the storage medium is properly inserted.
System Error: Firmware: Firmware version mismatch between the HMI panel and the WinCC flexible project runtime version.
Update the panel firmware using ProSave to match the WinCC flexible version used to create the project. Re-transfer the project after firmware update.

Frequently Asked Questions

What communication interfaces are available on the 6AV6644-7AA20-0BV0?

The MP 277 10-inch touch panel supports PROFIBUS DP, PROFINET (Ethernet), RS-422/485 serial interface, and USB ports for communication and peripheral connectivity.

Which engineering software is used to configure this panel?

The MP 277 is configured using Siemens WinCC flexible 2008 or later. Projects are transferred to the panel via Ethernet, USB, or MPI/PROFIBUS connection.

Is this panel compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the MP 277 supports direct communication with SIMATIC S7-200, S7-300, S7-400, and S7-1200 controllers via PROFIBUS DP or Ethernet, depending on the controller type and configuration.

What is the display type and resolution of this panel?

The panel features a 10.4-inch TFT color display with a resolution of 640 x 480 pixels (VGA) and supports 256 colors with a resistive touch screen.

Does the panel support data logging and recipe management?

Yes, the MP 277 supports data logging and recipe management. Data can be stored on the internal flash memory or on a CompactFlash card inserted into the panel's CF card slot.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Verify the supply is within the specified range and the connector is properly seated. Check if the panel backlight has failed by looking for a faint image on the screen.

Ensure the 24 V DC supply is stable and correctly connected. If the backlight has failed, the panel will require repair or replacement of the backlight unit. If no supply issue is found, perform a factory reset using the Control Panel in the Service menu.

Touch screen does not respond or is inaccurate

Determine whether the issue is a complete lack of response or positional inaccuracy. Check for physical damage or contamination on the touch surface. Attempt to access the touch calibration utility via the Windows CE Control Panel.

Clean the touch surface with a soft, dry cloth. Recalibrate the touch screen using the touch calibration tool in the Windows CE Control Panel under Start > Settings. If the touch screen remains unresponsive, the touch panel overlay may require replacement.

HMI cannot communicate with the PLC

Verify the physical connection (PROFIBUS cable or Ethernet cable) between the panel and the PLC. Check the bus address or IP address settings on both the HMI and PLC. Use the diagnostic tools in WinCC flexible to check the connection status.

Confirm that the PROFIBUS address or IP address in the HMI project matches the PLC configuration. Check cable integrity and termination resistors on the PROFIBUS network. Restart both the HMI panel and the PLC and monitor for connection establishment.

Project transfer from PC to panel fails

Check the transfer connection type (USB, Ethernet, or MPI). Verify the panel is in Transfer mode, accessible via the Start Center or by pressing the Transfer button. Confirm the WinCC flexible version on the PC matches the runtime version on the panel.

Set the panel to Transfer mode manually via the Start Center. Ensure the PC firewall is not blocking the transfer connection. If version mismatch is detected, update the panel firmware using ProSave before re-attempting the project transfer.

Panel repeatedly restarts or crashes during operation

Check the operating temperature around the panel and ensure adequate ventilation. Review the system event log in WinCC flexible for recurring error codes. Check the CompactFlash card for errors if data logging is active.

Ensure the ambient temperature does not exceed 50 °C and that the panel rear ventilation slots are not obstructed. Replace the CompactFlash card if file system errors are detected. If the issue persists, perform a firmware update using ProSave and re-transfer the project.

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