Siemens 6AV6446-1AA41-0BA5 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-0BA5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-0BA5
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-0BA5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-0BA5 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization tasks. This panel is part of Siemens' high-performance operator panel series, offering a 12-inch TFT display with touch and key operation capabilities. It is a robust, industrial-grade human-machine interface intended for use in complex automation environments.

The MP 370 (6AV6446-1AA41-0BA5) features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports up to 256 colors. It is equipped with a resistive touchscreen and function keys for flexible operator interaction. The panel runs on WinCC flexible runtime software and supports communication via MPI, PROFIBUS DP, and Ethernet interfaces, enabling integration with SIMATIC S7 PLCs and other controllers. Onboard memory includes Flash memory for project storage, and the unit operates on a 24 V DC supply.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical industries where a reliable and feature-rich HMI is required. Its combination of touch and key operation, multiple communication interfaces, and compatibility with the SIMATIC automation ecosystem make it suitable for complex visualization tasks on standalone machines and distributed production lines. The panel's industrial construction ensures reliable operation in environments with vibration, dust, and temperature variations.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Display Type	TFT color LCD
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (10/100 Mbit/s)
Operating System	Windows CE
Software	WinCC flexible Runtime
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

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 lost.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both PLC and HMI panel.
Event ID: 10001: Connection to PLC interrupted during runtime. The HMI panel has lost communication with the configured controller.
Inspect physical wiring and connectors. Check network settings and PLC program status. Ensure the PLC is in RUN mode and the communication parameters are correctly configured in WinCC flexible.
Event ID: 20000: Project download error. The project transfer from the engineering PC to the HMI panel failed.
Verify the transfer cable or network connection between the PC and panel. Ensure WinCC flexible version is compatible with the panel firmware. Check available memory on the panel before retransferring.
Event ID: 40000: System memory low. The available runtime memory on the panel is insufficient for the loaded project.
Reduce the project size by optimizing graphics and scripts. Delete unnecessary files from the panel memory. Consider upgrading to a panel with greater memory capacity if the project requirements exceed the panel's limits.
Event ID: 50000: Internal device error or hardware fault detected during self-test at startup.
Perform a panel reset and restart. If the error persists, check the 24 V DC supply voltage stability. Contact Siemens technical support or arrange for hardware inspection and repair.
Event ID: 60000: Firmware update error. The firmware update process was interrupted or failed to complete successfully.
Restart the panel and reattempt the firmware update using the correct firmware version for the 6AV6446-1AA41-0BA5. Ensure a stable power supply during the update process and use the correct ProSave or WinCC flexible tool.
Event ID: 70000: Tag update cycle exceeded. The HMI system cannot process all configured tag updates within the defined cycle time.
Increase the tag update cycle time in the WinCC flexible project settings. Reduce the number of simultaneously active tags or optimize communication by grouping tags efficiently.

Frequently Asked Questions

What PLC systems is the SIMATIC MP 370 (6AV6446-1AA41-0BA5) compatible with?

The MP 370 is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It also supports Ethernet-based communication and can be configured for use with other controllers supported by WinCC flexible drivers.

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

The panel is configured using Siemens WinCC flexible engineering software. 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 operating voltage of the 6AV6446-1AA41-0BA5?

The panel operates on a 24 V DC supply voltage. Ensure the power supply is stable and within the specified tolerance range to avoid operational issues.

Does the MP 370 support both touch and key operation?

Yes, the MP 370 features a resistive touchscreen combined with configurable function keys, allowing operators to interact with the HMI using either touch input or physical key presses.

What is the front panel protection rating of this unit?

The front panel of the MP 370 carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets, suitable for installation in industrial panel doors and enclosures.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check for blown internal fuses. Observe whether the panel emits any startup sounds or LED indicators illuminate.

Ensure the 24 V DC supply is within tolerance and the connector is firmly seated. If the supply is correct and the display remains blank, the internal power supply board or backlight inverter may have failed and requires replacement or professional repair.

HMI panel fails to communicate with the S7 PLC via MPI or PROFIBUS

Verify the MPI/PROFIBUS cable connections and check that termination resistors are correctly placed at both ends of the bus. Confirm the bus address configured in the HMI project matches the physical panel address setting.

Correct any address mismatches in the WinCC flexible project or on the panel. Replace damaged cables or connectors. Ensure only one active bus termination exists at each end of the PROFIBUS/MPI segment.

Touchscreen does not respond or responds inaccurately to touch input

Check whether the touchscreen responds at all or only in certain areas. Attempt a touchscreen recalibration from the panel's Control Panel settings in Windows CE.

Recalibrate the touchscreen using the calibration tool in the Windows CE Control Panel. If calibration does not resolve the issue, the resistive touch overlay may be damaged or worn and will require replacement.

Project transfer from PC to panel fails repeatedly

Check the transfer connection type (Ethernet or MPI) and verify network or bus settings. Confirm the panel is in Transfer mode and that the WinCC flexible version matches the panel firmware version.

Set the panel to Transfer mode manually via the Start Center. Ensure the PC and panel are on the same network subnet if using Ethernet. Update the panel firmware using ProSave if there is a version mismatch, then retry the project transfer.

Panel restarts unexpectedly during operation

Monitor the 24 V DC supply for voltage dips or instability under load. Check the operating environment temperature and ensure ventilation around the panel is adequate.

Install a regulated and adequately rated 24 V DC power supply. Ensure the panel installation location does not exceed the 0 °C to +50 °C operating temperature range. If restarts persist, inspect for internal hardware faults and arrange for professional repair.

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