Siemens 6AV6446-2AA45-3BY4 SIMATIC MP 377

Name: Siemens 6AV6446-2AA45-3BY4 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-2AA45-3BY4
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-2AA45-3BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-2AA45-3BY4 is a Multi Panel belonging to the SIMATIC MP 377 series, part of Siemens' SIMATIC HMI product family. This panel is a high-performance operator interface device designed for demanding industrial visualization and control tasks. It runs on the Windows CE operating system and is engineered to deliver reliable human-machine interface functionality in harsh industrial environments.

The MP 377 features a 15-inch TFT widescreen display with a resolution of 1024 x 768 pixels and 64,000 colors, providing clear and detailed process visualization. It supports both touch and key operation, offering flexible interaction modes for operators. Communication interfaces include PROFIBUS DP, PROFINET, Ethernet (RJ45), USB ports, and a serial MPI/DP interface, enabling integration with a wide range of Siemens SIMATIC PLCs and third-party controllers. The panel is equipped with 12 MB user memory for project data and supports Sm@rtAccess and Sm@rtService functions for remote monitoring and diagnostics.

The SIMATIC MP 377 is widely used in manufacturing automation, process industries, water and wastewater treatment, energy management, and machine tool applications. Its robust construction, wide operating temperature range, and high IP protection rating make it suitable for installation in control cabinets and panel doors in environments with elevated dust and moisture levels. The panel is compatible with WinCC flexible engineering software, allowing efficient project creation and management.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	64,000 colors
Display Type	TFT
Touch Technology	Resistive touch screen with additional function keys
Input/Operating Voltage	24 V DC
Power Consumption	Max. 60 W
Communication Interface	PROFIBUS DP, PROFINET, Ethernet (RJ45), MPI, USB
User Memory	12 MB
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
Operating System	Windows CE 5.0
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC MP 377

Common Error Codes & System Events

Event ID: 10000: Communication error between HMI panel and PLC. Connection to the configured controller cannot be established or has been lost.
Check PROFIBUS/MPI/PROFINET cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both PLC and HMI panel.
Event ID: 10001: Tag read error. The HMI panel cannot 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 communication settings and ensure the PLC program is loaded and running.
Event ID: 10002: Tag write error. The HMI panel cannot write a value to a configured PLC tag.
Check that the target address in the PLC is not read-only or protected. Verify the PLC is in RUN mode and the tag address is correctly configured in the HMI project.
Event ID: 40000: System memory low. Available RAM on the HMI panel is critically low, which may affect panel performance.
Close unnecessary applications or scripts running on the panel. Reduce the number of active alarms or logged data. Consider restarting the panel to free memory.
Event ID: 70010: Project download error. A project transfer from the engineering PC to the HMI panel has failed.
Ensure the correct transfer channel is selected (Ethernet or USB). Verify the IP address or MPI address is correctly configured. Check that the panel is in transfer mode before initiating download.
Event ID: 20000: Alarm buffer overflow. The alarm buffer on the HMI panel has reached its maximum capacity.
Acknowledge and clear pending alarms. Increase the alarm buffer size in the WinCC flexible project settings or archive alarms to an external storage device.
Event ID: 50000: Recipe data error. An error occurred during reading or writing of recipe data.
Check that the recipe data records are correctly configured and that sufficient storage space is available. Verify the recipe tag addresses are valid and accessible in the PLC.

Frequently Asked Questions

What PLC systems is the SIMATIC MP 377 compatible with?

The MP 377 is compatible with Siemens SIMATIC S7-300, S7-400, S7-1200, and S7-1500 PLCs via MPI, PROFIBUS DP, or PROFINET/Ethernet interfaces. It can also communicate with third-party controllers using OPC or serial protocols configured in WinCC flexible.

What engineering software is required to program the MP 377?

The SIMATIC MP 377 is programmed using Siemens WinCC flexible 2008 or later. Projects can be transferred to the panel via Ethernet, USB, or MPI/PROFIBUS connection.

What is the supply voltage for the 6AV6446-2AA45-3BY4?

The panel requires a 24 V DC power supply. It is recommended to use a regulated SELV power supply with sufficient current capacity, typically at least 3 A.

Does the MP 377 support remote access and diagnostics?

Yes, the MP 377 supports Siemens Sm@rtAccess and Sm@rtService functions, which allow remote monitoring, control, and diagnostics via Ethernet using a standard web browser or the Sm@rtClient application.

What is the front panel protection rating of the 6AV6446-2AA45-3BY4?

The front panel of the MP 377 carries an IP65 protection rating, making it suitable for installation in environments where dust and water jets may be present. The rear of the unit is rated IP20.

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply terminals. Measure voltage at the panel connector and verify polarity. Inspect the internal fuse if accessible.

Ensure the power supply is providing stable 24 V DC with adequate current. If voltage is correct but the display remains blank, the backlight or internal power board may be faulty and the unit should be sent for repair or the backlight replaced.

HMI panel fails to establish communication with the PLC

Verify the communication cable type and wiring (MPI, PROFIBUS, or Ethernet). Check the bus address configured in the HMI project matches the physical PLC address. Use STEP 7 or TIA Portal to confirm the PLC is online and reachable.

Correct any address mismatches in the WinCC flexible project. Replace faulty communication cables or connectors. Ensure PROFIBUS termination resistors are correctly placed at both ends of the bus. Reload the project to the HMI panel after corrections.

Touchscreen does not respond or responds inaccurately

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

Clean the touch surface with a soft, dry cloth. Perform a touchscreen recalibration via the Windows CE Control Panel. If the issue persists after recalibration, the touch overlay may need replacement.

Panel repeatedly reboots or freezes during operation

Check the supply voltage for instability or voltage drops under load. Review the HMI project for memory-intensive scripts or excessive tag polling rates that could overload the panel CPU.

Stabilize the power supply and ensure it meets the panel's current requirements. Optimize the WinCC flexible project by reducing update cycles and script complexity. If the problem persists, perform a factory reset and reload the project.

Project transfer from PC to panel fails

Verify the transfer channel settings on both the PC and the panel. Ensure the panel is set to transfer mode via the Start Center. Check that the IP address or MPI address is correctly configured and that no firewall is blocking the connection.

Set the panel to transfer mode before initiating the download from WinCC flexible. Confirm the network settings match between the engineering PC and the panel. Try an alternative transfer method (e.g., USB instead of Ethernet) to isolate the issue.

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