Siemens 6AV6446-1AA41-2BB4 MP 370

€ 1.995,00

SKU: 6AV6446-1AA41-2BB4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-2BB4 is a Multi Panel (MP 370) belonging to the SIMATIC HMI Multi Panel series by Siemens. It is a high-performance operator panel designed for demanding visualization and control tasks in industrial automation environments. The MP 370 series offers a 12-inch display and is built to integrate seamlessly with Siemens SIMATIC controller families as well as third-party PLCs.

The 6AV6446-1AA41-2BB4 features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch screen operation. It runs on the Windows CE operating system and is configured using SIMATIC WinCC flexible engineering software. The panel provides multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling flexible integration into various network topologies. Onboard memory includes Flash memory for project and recipe storage, and the unit supports Compact Flash card expansion for additional data storage.

The MP 370 is widely used in machine building, process automation, and factory automation across industries such as automotive, food and beverage, chemical processing, and packaging. Its robust industrial housing, wide operating temperature range, and support for multiple communication protocols make it suitable for both standalone machine HMI applications and distributed SCADA-level visualization tasks. The panel's compatibility with SIMATIC S7 controllers and WinCC flexible makes it a practical choice for system integrators working within the Siemens automation ecosystem.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Type	TFT Color LCD
Display Colors	256 colors
Touch Technology	Resistive Touch Screen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Memory	12 MB Flash (user memory), Compact Flash card slot
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP/Protection Rating	IP65 (front), IP20 (rear)
Mounting	Panel mounting
Certifications	CE, UL, cUL
Series/Product Family	SIMATIC HMI Multi Panel (MP 370)

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC. The configured connection to the controller cannot be established or has been lost.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify the PLC address and communication parameters in WinCC flexible match the hardware configuration. Restart both the panel and the PLC.
Event ID: 10001: Timeout on the communication connection. The PLC did not respond within the configured timeout period.
Check network cabling and connector integrity. Verify PLC is in RUN mode and not in STOP or fault state. Increase the timeout value in the WinCC flexible connection settings if the network is heavily loaded.
Event ID: 20000: Tag read error. The HMI panel was unable to read the value of a configured tag from the PLC.
Verify the tag address exists in the PLC program and is accessible. Check that the data block or memory area referenced by the tag is present and not write-protected. Re-download the project to the panel.
Event ID: 20001: Tag write error. The HMI panel was unable to write a value to the configured tag address in the PLC.
Confirm the target address in the PLC is not read-only or protected. Check user authorization levels configured in WinCC flexible. Verify the PLC is in a state that allows external write access.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the panel failed or was interrupted.
Check the transfer cable or Ethernet connection between the engineering PC and the panel. Ensure the panel is in Transfer mode. Verify sufficient free memory on the panel and retry the download.
Event ID: 50000: System memory low. The available runtime memory on the panel is critically low, which may cause instability or unexpected behavior.
Reduce the number of active screens or logged data in the project. Clear the alarm buffer and data logs. Consider reducing image or graphic file sizes in the WinCC flexible project.
Event ID: 60000: Compact Flash card error. The panel cannot read from or write to the inserted Compact Flash card.
Remove and reinsert the Compact Flash card. Check the card for physical damage or corruption using a PC. Replace the Compact Flash card if the error persists. Ensure the card is formatted correctly (FAT16/FAT32).
Event ID: 70000: Backup/restore error. A backup or restore operation of the panel project or data failed.
Verify the Compact Flash card has sufficient free space. Ensure the panel is not in active communication during the backup process. Retry the operation and check the card integrity.

Frequently Asked Questions

What engineering software is required to configure the MP 370 (6AV6446-1AA41-2BB4)?

The MP 370 is configured using Siemens SIMATIC WinCC flexible. The appropriate version must be used to ensure compatibility with the panel firmware version installed on the device.

Which communication protocols does the 6AV6446-1AA41-2BB4 support?

The panel supports MPI, PROFIBUS DP, and Industrial Ethernet (TCP/IP) communication interfaces, as well as RS-422/485 serial communication. This allows connection to SIMATIC S7 PLCs and a range of third-party controllers.

What is the supply voltage for the MP 370 panel?

The MP 370 operates on a 24 V DC supply voltage. Ensure the power supply is capable of delivering the required current to avoid instability.

Is the MP 370 compatible with SIMATIC S7-300 and S7-400 controllers?

Yes, the MP 370 is fully compatible with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP interfaces, and also supports Ethernet-based communication with S7 controllers configured accordingly.

Can the Compact Flash card be used to transfer projects to the MP 370?

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

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Measure the voltage under load to rule out supply issues. Inspect the internal fuse if accessible.

Ensure the power supply is stable and within the 24 V DC specification. If the supply is correct and the display remains blank, the internal power supply board or backlight inverter may be faulty and require replacement.

Touch screen does not respond or responds inaccurately

Attempt to recalibrate the touch screen through the panel's Start Center or Control Panel settings. Check for physical damage or contamination on the screen surface.

Perform a touch screen recalibration via the Windows CE Control Panel. Clean the screen surface with a soft, dry cloth. If recalibration does not resolve the issue, the touch screen overlay may need to be replaced.

Panel fails to communicate with the PLC

Verify the communication cable type and wiring (MPI, PROFIBUS, or Ethernet). Check the bus address and baud rate settings on both the panel and the PLC. Use a bus diagnostic tool to check for bus errors or address conflicts.

Correct any address conflicts or baud rate mismatches in WinCC flexible and the PLC hardware configuration. Replace the communication cable if damaged. Ensure PROFIBUS termination resistors are correctly placed at both ends of the bus.

Project cannot be downloaded to the panel

Confirm the panel is set to Transfer mode via the Start Center. Check the Ethernet or MPI/PROFIBUS connection between the engineering PC and the panel. Verify the WinCC flexible project is compiled without errors.

Switch the panel to Transfer mode before initiating the download. Resolve any compilation errors in WinCC flexible. If using Ethernet, ensure the PC and panel are on the same subnet and no firewall is blocking the transfer.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or ripple under load. Review the alarm and event logs on the panel for system error events. Check available runtime memory and CPU load in the WinCC flexible project.

Stabilize the power supply and ensure adequate current capacity. Optimize the WinCC flexible project by reducing update cycles, screen complexity, and logged data volume. If the issue persists, perform a firmware update or restore the panel to factory settings.

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