Siemens 6AV6446-1AA41-1BB5 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-1BB5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-1BB5
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-1BB5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-1BB5 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 Siemens' high-performance Multi Panel series, which bridges the gap between standard operator panels and full PC-based systems. It is engineered to operate reliably in harsh industrial conditions and integrates seamlessly with Siemens SIMATIC controller families.

The MP 370 (6AV6446-1AA41-1BB5) is equipped with a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch screen operation. It runs on a Windows CE-based operating system and is configured using Siemens WinCC flexible engineering software. The panel provides communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling flexible integration into existing automation networks. It offers onboard flash memory for project storage and supports USB ports for peripherals and data transfer. The unit operates on a 24 V DC supply and is rated to IP65 on the front face, providing protection against dust and water ingress.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant applications where a robust and versatile HMI solution is required. Its combination of touch operation, broad communication capability, and Windows CE platform makes it suitable for complex visualization tasks involving trend displays, alarm management, and recipe handling. The panel is particularly valued in applications requiring simultaneous connectivity to multiple controllers or integration into SCADA-level systems.

Technical Specifications

Display Size	12 inch
Display Type	TFT Color LCD
Display Resolution	800 x 600 pixels (SVGA)
Touch Technology	Resistive Touch Screen
Input/Operating Voltage	24 V DC
Operating System	Windows CE
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP)
USB Ports	2 x USB
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)
Mounting	Panel mounting
Certifications	CE, UL, cUL
Series/Product Family	SIMATIC HMI Multi Panel MP 370

Common Error Codes & System Events

Event ID: 1000: Communication error to the configured controller — connection to the PLC cannot be established or has been lost.
Check MPI/PROFIBUS or Ethernet cable connections and verify PLC address settings in the WinCC flexible project. Confirm the PLC is powered and in RUN mode.
Event ID: 1003: Tag read/write error — the HMI panel cannot read from or write to a configured PLC tag.
Verify the tag address in WinCC flexible matches the actual PLC data block or memory address. Check controller program for address conflicts.
Event ID: 10000: Project download error — transfer of the WinCC flexible project to the panel has failed.
Check the transfer cable or network connection. Ensure the panel is in Transfer mode and that the correct communication interface is selected in WinCC flexible Transfer settings.
Event ID: 40000: System memory low — available working memory on the panel is critically low.
Reduce the size of the active project, remove unused screens or scripts, and restart the panel. Consider archiving log data to external USB storage.
Event ID: 20000: Recipe data error — a recipe record could not be read or written correctly.
Check recipe configuration in WinCC flexible for correct tag assignments and data types. Verify sufficient flash memory is available on the panel.
Event ID: 50000: Alarm buffer overflow — the alarm log has exceeded its configured maximum capacity.
Acknowledge and clear pending alarms. Increase the alarm buffer size in the WinCC flexible project settings or enable automatic archiving of alarm events.
Event ID: 70000: Screen object update error — one or more display objects on the active screen cannot be refreshed.
Check the associated tag connections for the affected screen objects. Verify PLC communication is active and the relevant data areas are accessible.

Frequently Asked Questions

What engineering software is required to configure the 6AV6446-1AA41-1BB5?

This panel is configured using Siemens WinCC flexible, which is the standard engineering tool for the SIMATIC HMI Multi Panel series. Projects created in WinCC flexible are transferred to the panel via MPI, PROFIBUS, Ethernet, or USB.

Which Siemens PLC families are compatible with the MP 370?

The MP 370 is compatible with SIMATIC S7-200, S7-300, S7-400, and S7-1200 controllers via MPI or PROFIBUS DP interfaces. Ethernet-based communication is also supported for compatible controller variants.

What is the supply voltage for the 6AV6446-1AA41-1BB5?

The panel operates on a 24 V DC supply voltage. Ensure the power supply is within the specified tolerance range to guarantee stable operation.

Does the MP 370 support third-party PLC communication?

Yes, the MP 370 supports communication with certain third-party controllers through configurable drivers available in WinCC flexible, including protocols such as Modbus and Allen-Bradley DF1, depending on the software version.

What is the front panel protection rating of this unit?

The front panel of the 6AV6446-1AA41-1BB5 is rated to IP65, providing full protection against dust ingress and resistance to low-pressure water jets, making it suitable for panel-mounted installations in industrial environments.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for blown internal fuses and inspect the power supply unit for visible damage.

Restore the 24 V DC supply to within specification. Replace any blown fuses with the correct rating. If the internal power supply board is faulty, replace the power supply module or return the unit for repair.

Touch screen does not respond or responds inaccurately

Attempt to recalibrate the touch screen through the panel's Start Center or Control Panel settings. Inspect the touch screen surface for damage, contamination, or delamination.

Perform a touch screen calibration via the Windows CE Control Panel. Clean the screen surface with a soft, lint-free cloth. If calibration fails repeatedly, the touch screen overlay may need replacement.

Panel fails to establish communication with the PLC

Verify the MPI or PROFIBUS address configured on the panel matches the project settings. Check the physical cable connections and termination resistors on the PROFIBUS network. Use a bus diagnostic tool to check network integrity.

Correct any address mismatches in the WinCC flexible project and re-download to the panel. Replace damaged cables and ensure proper bus termination at both ends of the PROFIBUS segment.

Project transfer from PC to panel fails

Confirm the panel is set to Transfer mode via the Start Center. Check that the correct communication interface (Ethernet, MPI, or USB) is selected in WinCC flexible Transfer settings and that the PC and panel addresses are compatible.

Switch the panel to Transfer mode manually. Verify firewall settings on the PC do not block the transfer port. Try an alternative transfer medium such as a USB memory stick if network transfer continues to fail.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or ripple using an oscilloscope or multimeter. Review the alarm and system event log on the panel for recurring event IDs that may indicate software or memory issues.

Stabilize the power supply by using a dedicated 24 V DC source with adequate current capacity. If the issue is software-related, reload the WinCC flexible project. Perform a factory reset if the panel OS is corrupted, then re-download the project.

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