Siemens 6AV6446-1AA41-2AA3 SIMATIC MP 377

Name: Siemens 6AV6446-1AA41-2AA3 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-1AA41-2AA3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-2AA3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-2AA3 is a Multi Panel belonging to the SIMATIC MP 377 series, part of Siemens' SIMATIC HMI product family. This unit features a 12-inch TFT display and is designed for demanding machine-level visualization and operator control tasks. It runs on the Windows CE operating system and is engineered for use in industrial environments requiring robust and reliable human-machine interface solutions.

The MP 377 12" Touch features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports 64,000 colors. It is equipped with a resistive touchscreen interface and includes communication interfaces such as PROFIBUS DP, PROFINET (Ethernet), RS-422/485, and USB ports. The panel offers 12 MB of user memory for project data and is configured and programmed using Siemens WinCC flexible engineering software. It supports MPI/PROFIBUS DP and Industrial Ethernet connectivity, enabling integration with SIMATIC S7 PLCs and other compatible controllers.

The SIMATIC MP 377 12" Touch is widely used in manufacturing, automotive, food and beverage, chemical, and process industries for machine-level HMI applications. Its robust construction, wide operating temperature range, and IP65 front panel protection rating make it suitable for installation in control cabinets and panel doors in harsh industrial environments. The panel's versatile communication capabilities allow it to serve as a central visualization node in both standalone machine applications and networked plant-wide SCADA architectures.

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 6.0
User Memory	12 MB
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	PROFIBUS DP, PROFINET (Ethernet RJ45), RS-422/485, 2x 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)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC MP 377

Common Error Codes & System Events

Event ID: 1000: Project transfer error — communication between engineering PC and panel failed during project download.
Check the communication cable and interface settings. Verify the IP address or PROFIBUS address configuration on both the panel and the engineering PC. Retry the transfer.
Event ID: 1003: Project data corrupted or incompatible — the loaded project is not compatible with the current panel firmware version.
Check the WinCC flexible project version against the panel firmware version. Update firmware or recompile and retransfer the project using a compatible WinCC flexible version.
Event ID: 10000: Connection to PLC lost — the HMI panel cannot establish or maintain communication with the configured PLC.
Check PROFIBUS or Ethernet cabling and termination. Verify PLC address settings match the HMI project configuration. Check PLC operational state.
Event ID: 10001: PLC communication timeout — no response received from the PLC within the configured timeout period.
Increase the communication timeout value in the HMI project settings. Inspect network cabling and connectors. Verify PLC CPU is in RUN mode.
Event ID: 20000: Tag read error — the HMI panel cannot read the value of 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 correct data area allocation.
Event ID: 20001: Tag write error — the HMI panel cannot write a value to the configured PLC tag.
Check that the target PLC memory area is not write-protected. Verify the tag address and data type configuration in the HMI project.
Event ID: 40000: System memory low — available runtime memory on the panel is critically low.
Reduce the number of active screens or objects in the project. Clear unnecessary data logs or alarm logs stored on the panel. Consider optimizing the project structure.
Event ID: 70010: Backup/restore error — an error occurred during a project or data backup or restore operation.
Check the USB storage device for errors and sufficient free space. Reformat the USB device if necessary and retry the backup or restore operation.

Frequently Asked Questions

What PLC systems is the 6AV6446-1AA41-2AA3 compatible with?

The SIMATIC MP 377 12" Touch is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI, PROFIBUS DP, or PROFINET. It can also communicate with S7-200 PLCs and third-party controllers via the RS-422/485 serial interface using appropriate drivers in WinCC flexible.

What engineering software is required to program this panel?

The 6AV6446-1AA41-2AA3 is configured and programmed using Siemens WinCC flexible 2008 or later. The project is compiled on a PC and transferred to the panel via Ethernet, PROFIBUS, USB, or serial connection.

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

The front panel of the 6AV6446-1AA41-2AA3 carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets, suitable for installation in control panel doors in industrial environments.

Can the MP 377 12" Touch log process data and alarms?

Yes, the panel supports data logging and alarm logging functions configurable within WinCC flexible. Logs can be stored in internal memory or on an external USB storage device.

What is the supply voltage for the 6AV6446-1AA41-2AA3?

The panel operates on a 24 V DC supply voltage. It is recommended to use a regulated 24 V DC power supply with sufficient current capacity, typically at least 2 A.

Troubleshooting

Display remains blank after power on

Check that 24 V DC supply is present at the power connector. Measure voltage at the panel terminals. Inspect the internal fuse if accessible. Verify the power supply can deliver sufficient current.

Ensure the 24 V DC supply is stable and within tolerance. Replace the power supply if voltage is absent or unstable. If supply is correct and display remains blank, the panel backlight or internal power board may require repair or replacement.

Touchscreen does not respond or responds inaccurately

Check whether the touchscreen is physically damaged or contaminated. Attempt to recalibrate the touchscreen via the panel's Start Center or Control Panel settings in Windows CE.

Clean the touchscreen surface with a soft, dry cloth. Perform a touchscreen recalibration through the panel's system settings. If recalibration does not resolve the issue, the resistive touch overlay may need replacement.

Panel cannot communicate with the PLC

Verify the communication cable connections on both the panel and PLC sides. Check the configured PLC address and communication interface settings in the WinCC flexible project against the actual hardware configuration.

Replace or reseat communication cables. Correct any address mismatches in the project configuration. Ensure the PLC is powered and in RUN or STOP mode as required. Check PROFIBUS termination resistors if using PROFIBUS DP.

Project transfer from PC to panel fails

Confirm the transfer channel settings in WinCC flexible match the physical connection being used (Ethernet, USB, or PROFIBUS). Verify the panel is in Transfer mode via the Start Center.

Set the panel to Transfer mode manually from the Start Center. Verify IP address or PROFIBUS address settings are consistent between the engineering PC and the panel. Try an alternative transfer medium such as a USB drive if network transfer fails.

Panel freezes or restarts unexpectedly during operation

Check the 24 V DC supply for voltage dips or ripple using a multimeter or oscilloscope. Review the alarm and event logs on the panel for any recorded system events prior to the freeze or restart.

Stabilize the power supply and ensure adequate current capacity. Reduce project complexity if memory usage is high. Update the panel firmware to the latest compatible version. If the issue persists, the panel may require hardware inspection or repair.

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