Siemens 6AV6446-1AA40-1BB5 SIMATIC MP 370

Name: Siemens 6AV6446-1AA40-1BB5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA40-1BB5
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1AA40-1BB5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-1BB5 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization applications. This panel features a 12-inch TFT display and operates as a high-performance operator panel within Siemens' WinCC flexible runtime environment. It is part of the SIMATIC MP 370 series, which bridges the gap between compact operator panels and full PC-based visualization systems.

The MP 370 (6AV6446-1AA40-1BB5) is equipped with a resistive touchscreen and supports MPI, PROFIBUS DP, and Ethernet communication interfaces, enabling flexible integration into a wide range of automation architectures. The panel runs on a Windows CE operating system and provides sufficient processing power and memory for complex visualization projects with multiple screens, trends, alarms, and recipes. It supports connection to Siemens S7-200, S7-300, and S7-400 PLCs as well as third-party controllers via configurable drivers. The robust industrial housing is rated for panel mounting and designed to withstand typical industrial environmental conditions.

The SIMATIC MP 370 is widely used in machine building, automotive manufacturing, food and beverage processing, and general factory automation where a mid-to-large format operator interface is required. Its combination of touch operation, broad communication support, and WinCC flexible compatibility makes it suitable for applications requiring detailed process visualization, alarm management, and data logging at the machine level. The panel is commonly found on packaging lines, press systems, conveyor installations, and other machinery requiring reliable operator interaction.

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/RS-485
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
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC MP 370

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 MPI/PROFIBUS or Ethernet cabling and connectors. Verify PLC address settings match the HMI project configuration. Confirm the PLC is powered and in RUN mode.
Event ID: 10001: Tag read error. The HMI panel cannot read 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 communication link integrity.
Event ID: 10002: Tag write error. The HMI panel cannot write a value to the configured PLC tag.
Check that the PLC memory area is not write-protected. Verify the tag address configuration in WinCC flexible and confirm the communication connection is active.
Event ID: 20000: Project download error. Transfer of the WinCC flexible project to the panel failed.
Ensure the panel is in Transfer mode. Verify the PC-to-panel connection (MPI, PROFIBUS, or Ethernet). Check that the correct communication channel is selected in WinCC flexible Transfer settings.
Event ID: 40000: System memory low. Available runtime memory on the panel is insufficient for the current project.
Reduce the complexity of the WinCC flexible project, decrease the number of active screens or logged tags. Consider archiving historical data to an external memory card.
Event ID: 50000: Recipe data error. A recipe record could not be read from or written to the configured storage location.
Check the recipe configuration in WinCC flexible. Verify that the storage medium (internal flash or memory card) is present and not full or corrupted.
Event ID: 60000: Alarm buffer overflow. The number of pending alarms has exceeded the configured alarm buffer capacity.
Acknowledge and clear existing alarms. Review the alarm configuration in WinCC flexible and increase the alarm buffer size if necessary. Investigate the root cause of repeated alarms.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC MP 370 (6AV6446-1AA40-1BB5)?

The MP 370 supports Siemens S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP, as well as Ethernet-capable controllers. Third-party PLCs can also be connected using available communication drivers in WinCC flexible.

What software is used to configure and program the MP 370?

The MP 370 is configured using Siemens WinCC flexible, which is the engineering software for the SIMATIC HMI panel family. Projects are downloaded to the panel via MPI, PROFIBUS, or Ethernet.

What is the display size and touch technology of the 6AV6446-1AA40-1BB5?

This panel features a 12-inch TFT color display with SVGA resolution (800 x 600 pixels) and uses a resistive touchscreen for operator input.

What is the supply voltage required for the MP 370?

The MP 370 requires a 24 V DC supply voltage. Ensure the power source is stable and within the specified tolerance range to prevent panel faults.

Can the MP 370 be used with PROFIBUS DP networks?

Yes, the MP 370 supports PROFIBUS DP communication, allowing it to be integrated directly into existing PROFIBUS-based automation networks alongside Siemens and compatible third-party controllers.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the panel power connector. Verify the supply is within the specified range and that the connector is firmly seated. Check for any blown internal fuses.

Restore the correct 24 V DC supply. If the supply is confirmed correct but the display remains blank, the internal power supply board or backlight inverter may be faulty and require replacement.

Touchscreen does not respond or responds inaccurately

Determine whether the issue is a complete lack of response or positional inaccuracy. A complete lack of response may indicate a hardware fault, while inaccuracy typically indicates calibration drift.

Perform a touchscreen calibration via the panel's Start Center or Control Panel settings. If calibration does not resolve the issue, inspect the touchscreen overlay for damage and replace if necessary.

HMI cannot establish communication with the PLC

Verify the MPI, PROFIBUS, or Ethernet cable connections between the panel and PLC. Check that the bus address configured in the HMI project matches the physical PLC address. Confirm the PLC is powered and in RUN mode.

Correct any address mismatches in the WinCC flexible project and re-download. Replace damaged cables or connectors. Ensure PROFIBUS termination resistors are correctly placed at both ends of the bus.

Panel repeatedly reboots or freezes during operation

Check the 24 V DC supply for voltage dips or instability under load. Review the WinCC flexible project for memory overload conditions. Inspect the panel for signs of overheating.

Stabilize the power supply and ensure adequate ventilation around the panel. Simplify the project if memory usage is excessive. If the problem persists, the panel may require servicing or replacement of internal components.

Project transfer from PC to panel fails

Confirm the panel is set to Transfer mode via the Start Center. Verify the communication cable and interface settings match between the PC and the panel. Check that the correct transfer channel is selected in WinCC flexible.

Switch the panel to Transfer mode manually. Use a known-good MPI or Ethernet cable. Ensure the PC network or MPI adapter settings match the panel configuration, then retry the project download.

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