Siemens 6AV6644-2AB01-2AX0 MP 377

€ 1.846,00

SKU: 6AV6644-2AB01-2AX0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6644-2AB01-2AX0 is a Multi Panel (MP 377) belonging to the SIMATIC HMI family, designed for demanding machine-level visualization and operator control tasks. This unit features a 12-inch TFT display and is part of the MP 377 series, which represents a high-performance panel PC class within Siemens' SIMATIC HMI portfolio. It is engineered for use as a standalone operator panel in industrial automation environments.

The MP 377 12" Touch (6AV6644-2AB01-2AX0) is equipped with a resistive touchscreen interface and a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and 64,000 colors. It runs on the Windows CE operating system and supports WinCC flexible as its primary configuration software. Communication interfaces include PROFIBUS DP, MPI, and Ethernet (RJ45), enabling integration with SIMATIC S7 PLCs and other controllers. The panel features 64 MB RAM and 64 MB flash memory, with an optional CompactFlash card slot for extended storage. The operating voltage is 24 V DC.

The MP 377 is widely deployed in the mechanical engineering, automotive, food and beverage, and chemical processing industries. Its robust construction and versatile communication options make it suitable for machine tools, packaging lines, and process control stations where reliable visualization and operator interaction are required. The panel's support for multiple communication protocols allows it to interface with a broad range of Siemens and third-party controllers.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	64,000 colors
Display Type	TFT LCD
Touch Technology	Resistive touchscreen
Operating System	Windows CE 5.0
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
RAM	64 MB
Flash Memory	64 MB
Memory Card Slot	CompactFlash (CF) card
Communication Interface	PROFIBUS DP, MPI, Ethernet (RJ45)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
IP Rating (Front)	IP65
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 1000000: Connection to the PLC could not be established or was interrupted.
Check the communication cable and interface settings. Verify the PLC address and communication parameters in the project configuration.
Event ID: 1000002: The tag address configured in the project does not exist in the connected PLC.
Verify the tag addresses in WinCC flexible match the actual PLC data blocks and variable addresses.
Event ID: 1000003: Communication timeout: no response received from the PLC within the configured timeout period.
Check network cabling, PROFIBUS/MPI termination resistors, and PLC operating state. Increase the timeout value if the network load is high.
Event ID: 10000: System memory low: available RAM is below the critical threshold.
Close unused applications or runtime components. Consider reducing the number of active tags or increasing the polling cycle time.
Event ID: 20000: Project download failed or project data is corrupted.
Re-transfer the project from the engineering PC using WinCC flexible. Ensure the correct panel type and firmware version are selected.
Event ID: 40000: Operating system error or runtime application crash detected.
Perform a warm restart of the panel. If the fault persists, perform a factory reset and re-download the project.
Event ID: 110000: Recipe data transfer error between the panel and the PLC.
Check recipe configuration and ensure the PLC data block structure matches the recipe definition in WinCC flexible.
Event ID: 130000: Alarm logging or data logging error: the target storage medium is full or unavailable.
Clear or replace the CompactFlash card. Verify the logging configuration and ensure sufficient free storage space is available.

Frequently Asked Questions

What configuration software is required for the MP 377 12" Touch?

The MP 377 (6AV6644-2AB01-2AX0) is configured using Siemens WinCC flexible 2008 or later. Projects are transferred to the panel via Ethernet, USB, or MPI/PROFIBUS connection from the engineering PC.

Which PLCs are compatible with this panel?

The MP 377 supports communication with SIMATIC S7-200, S7-300, S7-400, and S7-1200 PLCs via MPI, PROFIBUS DP, or Ethernet. It also supports connections to third-party controllers through OPC or other configured drivers.

What is the operating voltage of the 6AV6644-2AB01-2AX0?

The panel operates on 24 V DC. It is important to use a regulated power supply within the specified voltage tolerance to ensure reliable operation.

Can the CompactFlash card be used for project storage and data logging?

Yes, the CompactFlash card slot supports storage of project data, recipe data, alarm logs, and trend data. A standard industrial-grade CompactFlash card is recommended for reliable operation.

What is the IP protection rating of the front panel?

The front panel of the MP 377 12" Touch achieves IP65 protection, 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 power connector. Check that the voltage is within the specified tolerance. Inspect the internal fuse if accessible.

Ensure the power supply provides a stable 24 V DC output. Replace the power supply if the voltage is out of range. If the supply is correct and the display remains blank, the backlight or internal power board may require replacement.

Touchscreen does not respond or responds inaccurately

Check whether the touch input is completely unresponsive or misaligned. Attempt to recalibrate the touchscreen via the panel's Control Panel settings in Windows CE.

Perform a touchscreen recalibration from the Siemens HMI Control Panel. If the touchscreen remains unresponsive after calibration, the resistive touch overlay may be damaged and requires replacement.

Panel cannot establish communication with the PLC

Verify the communication cable type and wiring. Check the configured PLC address, baud rate, and interface type (MPI, PROFIBUS, or Ethernet) in the WinCC flexible project settings.

Correct any mismatched communication parameters in the project. Ensure PROFIBUS termination resistors are correctly placed at both ends of the bus. Replace the communication cable if continuity tests fail.

Panel repeatedly reboots or freezes during runtime

Check for overheating by verifying the ambient temperature and ensuring ventilation slots are not blocked. Review the system event log for recurring event IDs.

Ensure the operating environment is within the 0 °C to +50 °C range. Clean ventilation areas. If the problem persists, perform a firmware update or factory reset and re-download the project.

Project transfer from engineering PC fails

Verify the transfer channel settings in WinCC flexible match the physical connection (Ethernet IP address, USB, or MPI). Ensure the panel is in Transfer mode.

Switch the panel to Transfer mode via the Start Center or Control Panel. Confirm the IP address or MPI address settings match the project transfer configuration. Disable any firewall software on the engineering PC that may block the connection.

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