Siemens 6AV6446-1AA40-0BB3 SIMATIC MP 370

Name: Siemens 6AV6446-1AA40-0BB3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA40-0BB3
Price: 5547.00 EUR
Availability: InStock

€ 5.547,00

Condition

Clear

SKU: 6AV6446-1AA40-0BB3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-0BB3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for high-performance human-machine interface applications in industrial automation environments. This unit features a 12-inch TFT display and operates as a Windows CE-based panel PC, providing a robust and versatile operator interface solution. It is part of Siemens' SIMATIC HMI series, which is widely used across process and discrete manufacturing industries.

The MP 370 (6AV6446-1AA40-0BB3) is equipped with a touch-sensitive screen and supports a range of communication interfaces including MPI, PROFIBUS DP, and Ethernet, enabling seamless integration with SIMATIC S7 PLCs and other controllers. The panel runs on Windows CE and is compatible with WinCC flexible runtime software, allowing for flexible project configuration and visualization. It offers onboard memory for project storage and supports external memory expansion via CompactFlash cards. The unit is built to industrial standards with an IP65-rated front panel, ensuring protection against dust and water ingress in demanding environments.

The SIMATIC MP 370 is commonly deployed in machine tool control, automotive manufacturing, food and beverage processing, and chemical plant operations. Its combination of a large display, touch operation, and broad communication capability makes it suitable for complex process visualization and operator control tasks. The panel is particularly well-suited for applications requiring simultaneous display of multiple process variables and integration with SIMATIC-based control architectures.

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 touchscreen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45), RS-422/485
Memory	12 MB user memory (project); CompactFlash slot for expansion
IP/Protection Rating	IP65 (front panel)
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 HMI MP 370

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 interrupted.
Check physical connections on MPI/PROFIBUS/Ethernet interface. Verify correct station address and baud rate settings in WinCC flexible project. Ensure PLC is in RUN mode.
Event ID: 10001: Connection to PLC lost during runtime. The HMI panel was previously connected but communication has dropped.
Inspect cable integrity and connector seating. Check for address conflicts on the bus. Restart the HMI and PLC if the connection is not automatically re-established.
Event ID: 20000: Tag read error. The HMI panel cannot read the value of a configured tag from the controller.
Verify the tag address in the WinCC flexible project matches the actual PLC memory address. Check PLC program to ensure the data block or address exists.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the panel has failed.
Ensure the panel is in Transfer mode. Verify the communication settings (IP address or MPI address) match between the engineering PC and the panel. Check available memory on the panel.
Event ID: 50000: Runtime system error. The WinCC flexible runtime application has encountered an internal fault and may have terminated.
Restart the panel. If the error persists, reload the project via WinCC flexible. Check for corrupted project files and regenerate if necessary.
Event ID: 70000: Memory error. Insufficient memory available on the panel to load or run the current project.
Reduce project size by removing unused screens or graphics. Insert a CompactFlash card to expand available storage. Archive and clear old log files from the panel.
Event ID: 80000: System time synchronization error. The panel clock cannot synchronize with the configured time server or PLC.
Check time synchronization settings in the WinCC flexible project. Verify network connectivity if using NTP. Replace the internal backup battery if the clock resets on power loss.

Frequently Asked Questions

Which communication interfaces are supported by the 6AV6446-1AA40-0BB3?

The MP 370 supports MPI, PROFIBUS DP, Ethernet (RJ45), and RS-422/485 serial interfaces, allowing connection to SIMATIC S7 PLCs and third-party controllers.

What software is required to configure and program this HMI panel?

The panel is configured using Siemens WinCC flexible engineering software. The compiled project is then transferred to the panel via Ethernet, MPI, or USB/CompactFlash.

Is the 6AV6446-1AA40-0BB3 compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the MP 370 is fully compatible with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP, and can also communicate with S7-300/400 over Ethernet using the appropriate communication drivers.

What is the supply voltage for this panel?

The panel operates on 24 V DC supply voltage.

Can the internal memory be expanded on this panel?

Yes, the MP 370 supports memory expansion via a CompactFlash card slot, which can be used for additional project storage and data logging.

Troubleshooting

Display remains blank after power on

Measure 24 V DC supply voltage at the power connector. Check the internal fuse and verify that the power LED indicator is active.

Ensure the 24 V DC supply is within tolerance. Replace the internal fuse if blown. If the backlight is faulty, the display panel or inverter board may require replacement.

Touchscreen does not respond or responds inaccurately

Check if the touch input is enabled in the Windows CE control panel. Attempt to recalibrate the touchscreen using the built-in calibration utility.

Run the touchscreen calibration routine from the Windows CE Start menu. If calibration does not resolve the issue, inspect the touchscreen overlay for physical damage and replace if necessary.

Panel cannot establish communication with the PLC

Verify MPI or PROFIBUS address settings on both the panel and the PLC. Check cable wiring and termination resistors on the bus.

Correct any address conflicts and ensure bus termination is applied only at the physical ends of the cable. Replace the communication cable if continuity testing reveals a fault.

Project transfer from WinCC flexible fails

Confirm the panel is set to Transfer mode. Check that the IP address or MPI address configured in WinCC flexible matches the panel settings.

Switch the panel to Transfer mode via the Start Center. Correct the communication parameters in the WinCC flexible project settings and retry the transfer.

Panel clock resets to default time after power cycle

The internal backup battery (real-time clock battery) may be discharged or missing.

Replace the internal CR2032 or equivalent backup battery. Refer to the MP 370 hardware manual for the correct battery type and replacement procedure.

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