Siemens 6AV6446-3AA40-0BY3 MP370

€ 2.995,00

SKU: 6AV6446-3AA40-0BY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA40-0BY3 is a Multi Panel MP370 belonging to the SIMATIC HMI Multi Panel series by Siemens. This panel PC is a high-performance operator interface device designed for demanding industrial visualization and control tasks. It features a 15-inch TFT display and is part of the broader SIMATIC HMI product family, which is widely used in factory and process automation environments.

The MP370 (6AV6446-3AA40-0BY3) is equipped with a 15-inch TFT color display with a resolution of 1024 x 768 pixels (XGA), supporting up to 64,000 colors. The panel operates on a 24 V DC supply and includes a resistive touch screen as well as a membrane keyboard for operator input. It supports communication via MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling integration with SIMATIC S7 PLCs and other controllers. The unit runs on Windows CE and is compatible with WinCC flexible runtime software for HMI application execution.

The MP370 is commonly deployed in machine tools, packaging machinery, printing presses, and process plant control panels where a large, high-resolution display is required alongside robust communication capabilities. Its combination of touch and keyboard input makes it suitable for complex operator interfaces in both discrete and continuous manufacturing environments. The panel's industrial-grade construction and wide operating temperature range make it appropriate for installation in control cabinets across a variety of industrial sectors.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	64,000 colors
Display Type	TFT LCD
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 60 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Operating System	Windows CE
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: 1000000: System startup event indicating the HMI runtime has initialized successfully.
No action required. Verify that the HMI project loads correctly after startup.
Event ID: 1000002: Communication error between the HMI panel and the connected PLC or controller.
Check MPI/PROFIBUS/Ethernet cabling and connections. Verify PLC address settings and communication parameters in WinCC flexible.
Event ID: 1000003: Tag read/write error — the HMI cannot read from or write to a configured PLC tag.
Verify the PLC program is running and the tag addresses in the HMI project match the PLC data blocks. Check communication link status.
Event ID: 1000006: Project download error — the HMI panel failed to receive or store the transferred project.
Check the transfer cable or network connection. Ensure sufficient storage space on the panel and that the correct transfer mode is active.
Event ID: 1000008: License missing or invalid for WinCC flexible runtime on the panel.
Verify that the correct WinCC flexible runtime license is installed on the panel. Transfer the license using the Automation License Manager.
Event ID: 1000011: Backup battery low or missing — the real-time clock and retain data may be lost on power failure.
Replace the internal backup battery with the correct replacement type. Refer to the MP370 operating instructions for battery replacement procedure.
Event ID: 1000020: Screen saver activated — display has switched off or dimmed due to inactivity timeout.
No fault condition. Touch the screen or press a key to reactivate the display. Adjust the screen saver timeout in the panel settings if required.

Frequently Asked Questions

What PLC systems are compatible with the Siemens MP370 (6AV6446-3AA40-0BY3)?

The MP370 is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It also supports Ethernet-based communication with S7 controllers and can be configured for third-party controllers using appropriate drivers in WinCC flexible.

What HMI software is required to program the MP370?

The MP370 requires Siemens WinCC flexible for project engineering and configuration. The panel runs WinCC flexible runtime on Windows CE to execute the HMI application.

What is the display size and resolution of the 6AV6446-3AA40-0BY3?

This variant features a 15-inch TFT color display with a resolution of 1024 x 768 pixels (XGA) and supports up to 64,000 colors.

What is the supply voltage for the MP370 panel?

The MP370 operates on a 24 V DC supply voltage. Ensure a stable, regulated 24 V DC power source is used to avoid panel faults or data loss.

Can the MP370 be used as a replacement for older Siemens OP or TP panels?

In many applications, the MP370 can replace older Siemens operator panels such as the OP37 or TP37, provided the HMI project is migrated to WinCC flexible. A project migration tool is available within WinCC flexible to assist with this process.

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 current is sufficient (minimum 2.5 A recommended). Inspect the internal fuse if accessible.

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

HMI panel fails to communicate with the S7 PLC

Check the MPI or PROFIBUS DP cable connections at both the panel and PLC. Verify the bus address configured on the panel matches the project settings. Use the panel's diagnostic screen to check communication status.

Replace or reseat the communication cable. Correct the MPI/PROFIBUS address in the panel settings or WinCC flexible project. Ensure the PLC is in RUN mode and the network termination resistors are correctly set on the bus.

Touchscreen does not respond or is misaligned

Attempt to recalibrate the touchscreen using the panel's system settings menu accessible during startup. Check for physical damage or contamination on the touch surface.

Perform a touchscreen recalibration from the Windows CE control panel or the SIMATIC HMI startup menu. Clean the screen surface with a soft, dry cloth. If recalibration fails repeatedly, the resistive touch overlay may need replacement.

WinCC flexible project does not transfer to the panel

Verify the transfer connection (Ethernet or serial) is active and the panel is set to Transfer mode. Check that the PC running WinCC flexible and the panel are on the same network subnet if using Ethernet transfer.

Set the panel to Transfer mode via the Start Center. Confirm the correct transfer channel is selected in WinCC flexible. Disable any firewall software on the engineering PC that may be blocking the transfer port.

Panel displays 'Backup Battery Low' warning

The internal real-time clock battery is discharged. This is typically a CR2032 or equivalent lithium coin cell battery located on the main board inside the panel.

Power down the panel and replace the backup battery with the correct type as specified in the MP370 operating instructions. After replacement, reset the real-time clock and verify retain data integrity.

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