Siemens 6AV6446-1AA40-2BB3 SIMATIC MP 370

Name: Siemens 6AV6446-1AA40-2BB3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA40-2BB3
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1AA40-2BB3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-2BB3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding visualization and operator control tasks in industrial automation environments. This panel features a 12-inch TFT display and is part of the MP 370 series, which provides high-performance human-machine interface functionality for complex process visualization. It is manufactured by Siemens and integrates seamlessly into SIMATIC automation architectures.

The MP 370 panel is equipped with a resistive touch screen and function keys, offering flexible operator input options. It supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling connectivity to a wide range of Siemens PLCs such as the S7-300 and S7-400 series. The panel runs on Windows CE and is configured using Siemens WinCC flexible engineering software, supporting project memory via CompactFlash card. It operates on a 24 V DC supply and features a robust industrial-grade enclosure with IP65 protection on the front face.

The SIMATIC MP 370 is widely deployed in manufacturing, process automation, and machine building industries where complex visualization with multiple screen pages and data logging is required. Its combination of touch and key operation makes it suitable for applications in automotive production lines, chemical processing plants, and packaging machinery. The panel's multi-protocol communication capability allows integration into both new and existing SIMATIC automation systems.

Technical Specifications

Display Size	12 inch
Display Type	TFT color LCD
Display Resolution	800 x 600 px (SVGA)
Display Colors	256 colors
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
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)
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Memory	CompactFlash card slot for project and data storage
Operating System	Windows CE
Engineering Software	WinCC flexible
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Connection to the PLC could not be established or was interrupted.
Check MPI/PROFIBUS/Ethernet cable connections and verify PLC address settings in the WinCC flexible project configuration.
Event ID: 10001: Communication timeout with the configured controller.
Verify the communication parameters (baud rate, station address) match those configured on the PLC. Check physical wiring and termination resistors on the bus.
Event ID: 20000: Tag value could not be read from the PLC.
Confirm the tag address exists in the PLC program and that the data type in the HMI project matches the PLC variable definition.
Event ID: 40000: Project loading error — project file on CompactFlash card is corrupt or incompatible.
Re-transfer the project from the engineering PC using WinCC flexible. Ensure the WinCC flexible version matches the panel firmware version.
Event ID: 50000: System memory low — insufficient runtime memory for the current project.
Reduce the number of active screens, limit logging buffer sizes, or optimize the project to reduce memory usage.
Event ID: 60000: Firmware update failed or firmware version mismatch detected.
Perform a firmware update via ProSave or WinCC flexible using the correct firmware version for the MP 370 panel variant.
Event ID: 70000: Backup/restore operation failed on the CompactFlash card.
Check that the CompactFlash card is properly inserted and not write-protected. Replace the card if it is faulty and retry the backup/restore operation.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC MP 370?

The MP 370 is compatible with Siemens S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP, and also supports Ethernet-based communication with S7 controllers. Third-party PLCs may be connected via the RS-422/485 interface using supported protocols.

What engineering software is required to configure the 6AV6446-1AA40-2BB3?

The panel is configured using Siemens WinCC flexible. The project is then transferred to the panel via Ethernet, MPI, or USB using the ProSave tool or directly from WinCC flexible.

What is the display size and type on this panel?

The 6AV6446-1AA40-2BB3 features a 12-inch TFT color LCD with a resolution of 800 x 600 pixels (SVGA) and supports 256 colors.

What is the front panel protection rating of the MP 370?

The front face of the MP 370 carries an IP65 protection rating, making it resistant to dust and water jets, suitable for industrial panel mounting environments.

Can the MP 370 be used with a CompactFlash card for data logging?

Yes, the MP 370 includes a CompactFlash card slot that can be used for project storage, data logging, recipe management, and backup/restore operations.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check the internal fuse and verify the supply is within the specified voltage range.

Ensure the power supply provides a stable 24 V DC. Replace the internal fuse if blown. If the backlight has failed, the display unit or backlight inverter may require replacement.

Touchscreen does not respond or responds inaccurately

Check if the touch screen is physically damaged or contaminated. Attempt to recalibrate the touch screen via the panel's Start Center or Control Panel in Windows CE.

Clean the touch screen surface with a soft cloth. Perform a touch screen recalibration through the Windows CE Control Panel. If the issue persists, the touch screen overlay may need to be replaced.

Panel fails to communicate with the PLC

Verify the communication cable type and wiring. Check that the MPI or PROFIBUS address configured on the panel matches the PLC settings. Use a bus diagnostic tool to check for bus errors.

Correct any address mismatches in the WinCC flexible project. Ensure proper bus termination is applied at both ends of the PROFIBUS or MPI network. Replace the communication cable if damaged.

Project cannot be transferred to the panel

Check the transfer channel settings in WinCC flexible and confirm the panel is in Transfer mode. Verify the Ethernet or MPI connection between the engineering PC and the panel.

Set the panel to Transfer mode via the Start Center. Confirm the IP address or MPI address is correctly configured. Reinstall the PC adapter driver if using an MPI/USB adapter.

Panel repeatedly restarts or crashes during operation

Check for overheating by verifying ambient temperature and ensuring ventilation slots are not blocked. Review the Windows CE event log for software errors. Check the CompactFlash card for corruption.

Ensure the operating environment is within the 0 to 50 °C range. Replace the CompactFlash card and re-transfer the project. If the issue persists, a firmware re-flash using ProSave may be required.

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