Siemens 6AV6644-8AB20-0AA1 MP 377

Name: Siemens 6AV6644-8AB20-0AA1 MP 377
Brand: Siemens
SKU: 6AV6644-8AB20-0AA1
Price: 1840.00 EUR
Availability: InStock

€ 1.840,00

Condition

Clear

SKU: 6AV6644-8AB20-0AA1 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens MP 377 (part number 6AV6644-8AB20-0AA1) is a Multi Panel HMI device belonging to the SIMATIC HMI Multi Panel 377 series. It is a high-performance operator panel designed for demanding machine and plant visualization tasks, featuring a 12-inch TFT display. As part of Siemens' SIMATIC HMI portfolio, it serves as a powerful human-machine interface for process monitoring and control in industrial environments.

The 6AV6644-8AB20-0AA1 features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and resistive touch screen technology combined with function keys for flexible operator input. It is equipped with multiple communication interfaces including PROFIBUS DP, MPI, and Ethernet (RJ45), enabling integration with a wide range of Siemens SIMATIC PLCs including S7-300 and S7-400. The panel runs on Windows CE and is configured using WinCC flexible engineering software, supporting project memory via CompactFlash card. It operates on a 24 V DC supply and offers a robust aluminum front panel with IP65 protection rating on the front face.

The MP 377 12-inch Touch is widely deployed in manufacturing, automotive, chemical processing, water treatment, and energy industries where a large, high-resolution display and versatile communication options are required. Its combination of touch and key operation makes it suitable for complex SCADA-style visualization at the machine level, and its rugged construction ensures reliable operation in harsh industrial environments with exposure to dust, moisture, and vibration.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	64,000 colors (TFT)
Touch Technology	Resistive touch screen with function keys
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	PROFIBUS DP, MPI, Ethernet (RJ45), USB
Operating System	Windows CE 5.0
Configuration Software	WinCC flexible 2008 or later
Memory	CompactFlash card slot for project and recipe data
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)
Mounting	Panel mounting (portrait or landscape)
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 1000: System startup completed successfully. The HMI panel has booted and the runtime environment is active.
No action required. This is an informational event confirming normal startup.
Event ID: 10000: Connection to PLC lost. The HMI cannot establish or maintain communication with the configured controller.
Check PROFIBUS/MPI/Ethernet cabling and connector integrity. Verify PLC is powered and running. Check communication parameters (address, baud rate) in WinCC flexible project.
Event ID: 10001: Communication timeout with PLC. Data exchange has been interrupted beyond the configured timeout period.
Inspect network cabling for faults. Verify PLC program is running and communication blocks are active. Adjust timeout settings in the HMI project if necessary.
Event ID: 20000: Tag read error. The HMI was unable to read a configured tag from the PLC.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for address changes.
Event ID: 20001: Tag write error. The HMI was unable to write a value to the configured PLC tag.
Check that the target PLC address is writable and not write-protected. Verify communication link is active and tag configuration is correct.
Event ID: 40000: Project download error. A project transfer to the HMI panel failed or was interrupted.
Ensure the transfer cable or Ethernet connection is secure. Verify WinCC flexible version compatibility with the panel firmware. Retry the transfer after restarting both the panel and engineering PC.
Event ID: 70010: Internal panel temperature warning. The device has detected an elevated internal temperature approaching operational limits.
Check ambient temperature and ensure adequate ventilation around the panel. Clean any dust from ventilation slots. Verify the installation environment meets the 0 °C to +50 °C operating range.

Frequently Asked Questions

Which PLCs are compatible with the Siemens MP 377 6AV6644-8AB20-0AA1?

The MP 377 is compatible with Siemens SIMATIC S7-300, S7-400, S7-1200, and S7-1500 PLCs via MPI, PROFIBUS DP, or Ethernet interfaces. It can also communicate with third-party controllers using standard protocols supported by WinCC flexible drivers.

What engineering software is required to configure this HMI panel?

The MP 377 is configured using Siemens WinCC flexible 2008 or a compatible version. Projects created in WinCC flexible can be transferred to the panel via Ethernet, USB, or a direct MPI/PROFIBUS connection.

What is the display type and size of the 6AV6644-8AB20-0AA1?

This unit features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports 64,000 colors. It uses a resistive touch screen combined with membrane function keys.

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

The front face of the MP 377 carries an IP65 protection rating, making it resistant to dust and water jets. The rear of the panel is rated IP20.

Can the MP 377 be used with TIA Portal?

The MP 377 is not natively supported in TIA Portal (WinCC Advanced/Comfort). It is designed for use with WinCC flexible. Migration to a newer SIMATIC Comfort Panel may be required for TIA Portal-based projects.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel power connector. Check that the supply is within tolerance and that the power connector is fully seated. Inspect the internal fuse if accessible.

Restore correct 24 V DC supply voltage. If voltage is correct and 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

Attempt to recalibrate the touch screen through the panel's Start Center or Control Panel settings. Check for physical damage or contamination on the screen surface.

Perform a touch screen recalibration via the Windows CE Control Panel. Clean the screen surface with a soft, dry cloth. If calibration fails repeatedly, the touch screen digitizer may need replacement.

HMI cannot connect to PLC via PROFIBUS or MPI

Verify the PROFIBUS/MPI address configured in the WinCC flexible project matches the address set on the panel. Check cable termination resistors at both ends of the PROFIBUS segment.

Correct the station address in the WinCC flexible project or on the panel. Ensure proper bus termination is applied. Replace damaged PROFIBUS cables or connectors as needed.

Panel repeatedly reboots or crashes during runtime

Check the CompactFlash card for errors or corruption. Monitor internal temperature to rule out overheating. Review the system event log in the Start Center for recurring event codes.

Replace the CompactFlash card with a new, compatible card and reload the project. Ensure the operating environment is within the specified temperature range. Update panel firmware if an outdated version is suspected.

Project transfer from WinCC flexible fails

Verify the Ethernet or USB connection between the engineering PC and the panel. Confirm that the panel is in Transfer mode (accessible via the Start Center). Check firewall settings on the engineering PC.

Set the panel to Transfer mode manually via the Start Center. Disable PC firewall temporarily during transfer. Ensure WinCC flexible version is compatible with the panel firmware version and retry the transfer.

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