Siemens 6AV6644-0CB01-2AX0 MP 377

Name: Siemens 6AV6644-0CB01-2AX0 MP 377
Brand: Siemens
SKU: 6AV6644-0CB01-2AX0
Availability: InStock

Price range: € 2.888,00 through € 8.571,13

Condition

Clear

SKU: 6AV6644-0CB01-2AX0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens MP 377 (part number 6AV6644-0CB01-2AX0) is a Multi Panel HMI device belonging to the SIMATIC HMI Multi Panel 377 series. It features a 12-inch TFT display and is designed for demanding machine-level visualization and operator control tasks. As part of Siemens' SIMATIC HMI portfolio, it bridges the gap between compact panels and high-end PC-based systems.

The 6AV6644-0CB01-2AX0 is equipped with a resistive touch screen and an integrated keypad, offering flexible operator input options. It runs on Windows CE and supports WinCC flexible as its configuration software, providing a robust and deterministic runtime environment. The panel includes MPI/PROFIBUS DP and PROFINET/Ethernet interfaces, enabling integration into a wide range of Siemens and third-party control architectures. It offers 12 MB of user memory for project data and supports USB and CF card slots for data archiving and project transfer.

The MP 377 12-inch Touch is widely deployed in machine building, automotive manufacturing, food and beverage processing, and packaging industries. Its combination of touch and key operation makes it suitable for environments where operators require both intuitive graphical navigation and tactile key input. The panel's industrial-grade construction and broad communication capabilities make it a reliable choice for complex multi-axis machine visualization and process monitoring applications.

Technical Specifications

Display Size	12 inch
Display Type	TFT color
Display Resolution	800 x 600 px (SVGA)
Display Colors	256,000 colors
Touch Technology	Resistive touch screen with membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	MPI/PROFIBUS DP, PROFINET/Ethernet (RJ45), USB (2x), CF card slot
User Memory	12 MB
Operating System	Windows CE
Configuration Software	WinCC flexible 2008 or higher
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

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 lost.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both PLC and HMI panel.
Event ID: 10001: Connection timeout to the PLC. The HMI panel did not receive a response from the controller within the configured timeout period.
Check network cabling and connector integrity. Verify the PLC is in RUN mode and the communication parameters (baud rate, station address) are correctly configured in the HMI project.
Event ID: 20000: Tag read error. The HMI runtime was unable to read a configured tag from the PLC.
Verify the tag address exists in the PLC program and the data block is not write-protected. Check that the PLC program has not been modified in a way that removes or relocates the referenced address.
Event ID: 40000: Project loading error. The HMI runtime encountered an error while loading the project from internal flash memory.
Transfer the project again from the engineering PC using WinCC flexible. If the error persists, perform a factory reset via the Control Panel and re-transfer the project.
Event ID: 50000: System memory low. Available runtime memory is critically low, which may cause instability or reduced performance.
Reduce the number of simultaneously active screens, alarms, and logged tags. Optimize the project in WinCC flexible to reduce memory usage and re-transfer.
Event ID: 70000: Data loss on CF card or USB storage device. The external storage medium is not accessible or has been removed unexpectedly.
Check that the CF card or USB device is properly inserted and not write-protected. Replace the storage medium if it is faulty. Ensure the medium is not removed while data archiving is active.
Event ID: 110000: License missing or invalid. A required WinCC flexible runtime license is not present on the panel.
Transfer a valid WinCC flexible runtime license to the panel using the Siemens Automation License Manager (ALM). Ensure the license matches the runtime version installed on the device.

Frequently Asked Questions

What configuration software is required for the MP 377 6AV6644-0CB01-2AX0?

This panel requires Siemens WinCC flexible 2008 or a later compatible version for project engineering and transfer. Projects are transferred via Ethernet, USB, or CF card.

What communication interfaces are available on this panel?

The 6AV6644-0CB01-2AX0 provides an MPI/PROFIBUS DP port (RS-485), a PROFINET/Ethernet port (RJ45), two USB ports, and a CompactFlash (CF) card slot. This allows direct connection to S7-300, S7-400, and S7-1200/1500 PLCs as well as third-party controllers via Ethernet.

Is this panel compatible with Siemens S7-1500 PLCs?

Yes, the MP 377 can communicate with S7-1500 PLCs via the PROFINET/Ethernet interface using the appropriate WinCC flexible driver. MPI/PROFIBUS connectivity is primarily used with S7-300 and S7-400 controllers.

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

The front panel of the 6AV6644-0CB01-2AX0 carries an IP65 protection rating, making it suitable for panel-mount installations where dust and water spray protection is required.

Can the MP 377 be upgraded to TIA Portal / WinCC Advanced?

The MP 377 is not natively supported by TIA Portal WinCC Advanced; it is designed for use with WinCC flexible. Siemens recommends migrating to a SIMATIC Comfort Panel if TIA Portal-based engineering is required.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check that the supply is within the specified range and that the polarity is correct. Inspect the internal fuse if accessible.

Correct any wiring or power supply issues. If the supply voltage is correct but the display remains blank, the internal power supply board or backlight inverter may be faulty and the unit should be sent for repair or the backlight replaced.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touch screen via the Windows CE Control Panel (Start > Settings > Control Panel > Touch). Check for physical damage, scratches, or contamination on the screen surface.

Perform a touch screen recalibration. 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 requires replacement.

HMI cannot establish communication with the PLC

Verify the communication cable type and wiring (MPI/PROFIBUS or Ethernet). Check that the station address and baud rate configured in the HMI project match the PLC settings. Use a network diagnostic tool or the PLC programming software to confirm the PLC is reachable.

Correct any address or baud rate mismatches in the WinCC flexible project and re-transfer. Replace faulty cables or connectors. Ensure PROFIBUS termination resistors are correctly placed at both ends of the bus segment.

Project transfer from PC fails or times out

Check the USB or Ethernet connection between the engineering PC and the panel. Verify that the panel is in Transfer mode (accessible via the Start Center on the panel). Confirm that any firewall or antivirus software on the PC is not blocking the WinCC flexible transfer.

Switch the panel to Transfer mode manually via the Start Center. Disable PC-side firewall temporarily during transfer. Try an alternative transfer medium (USB stick or CF card) if network transfer continues to fail.

Panel reboots unexpectedly or shows a watchdog reset message

Check the 24 V DC supply for voltage dips or ripple using an oscilloscope or multimeter. Review the alarm log on the panel for recurring system events. Inspect the project for memory overload conditions.

Stabilize the power supply and ensure it is adequately rated for the panel's power consumption. Optimize the WinCC flexible project to reduce CPU and memory load. If reboots persist with a stable supply and optimized project, the panel hardware may require servicing.

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