Siemens 6AV6446-1BA40-2BA4 SIMATIC MP 370

Name: Siemens 6AV6446-1BA40-2BA4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1BA40-2BA4
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1BA40-2BA4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1BA40-2BA4 is a Multi Panel (MP 370) belonging to the SIMATIC HMI product family. It is a high-performance operator panel designed for demanding industrial visualization and control tasks, featuring a 12-inch TFT display. As part of the SIMATIC MP 370 series, it provides a robust and versatile human-machine interface solution for complex automation environments.

The MP 370 (6AV6446-1BA40-2BA4) is equipped with a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and touch screen functionality. It runs on Windows CE and supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling seamless integration with SIMATIC S7 PLCs and other controllers. The panel features 64 MB of RAM and 20 MB of user memory for project data, and supports USB ports for peripheral connectivity and data transfer.

The SIMATIC MP 370 is widely used in manufacturing, process automation, and machine building industries where complex visualization tasks and high graphical performance are required. It is particularly suited for applications in automotive production lines, chemical processing plants, and packaging machinery, where operators require a reliable and feature-rich interface to monitor and control sophisticated automation systems.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors (TFT)
Touch Technology	Analog resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 40 W
Operating System	Windows CE 5.0
RAM	64 MB
User Memory	20 MB
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
USB Ports	2 x USB 1.1
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, cULus

Common Error Codes & System Events

Event ID: 10000: Communication error with the connected PLC or controller. The HMI cannot establish or maintain a connection.
Check the communication cable and connector integrity. Verify MPI/PROFIBUS address settings and ensure the PLC is powered and running. Check network configuration parameters in the project.
Event ID: 10001: Connection to the PLC was interrupted during runtime operation.
Inspect physical communication lines for damage. Verify PLC is operational and not in STOP mode. Re-establish connection and check for electromagnetic interference on the bus.
Event ID: 20000: Tag read error. The HMI panel was unable to read a configured tag from the PLC.
Verify the tag address exists and is correctly configured in the HMI project. Check that the PLC data block or memory area referenced is present and accessible.
Event ID: 20001: Tag write error. The HMI panel was unable to write a value to the configured PLC tag.
Check that the target PLC memory area is not write-protected. Verify tag address configuration and ensure the PLC is in RUN mode and accepting write commands.
Event ID: 40000: Project download error. A fault occurred during project transfer to the panel.
Ensure sufficient free memory on the panel. Check the USB or Ethernet connection used for transfer. Restart the panel and retry the download using SIMATIC WinCC flexible or TIA Portal.
Event ID: 50000: System memory low warning. Available RAM or storage memory is critically low.
Delete unused project files, logs, or recipe data from the panel memory. Consider archiving data to an external USB device to free up internal storage.
Event ID: 70000: Internal hardware fault detected. A self-diagnostic check has identified a hardware error.
Perform a panel restart. If the fault persists, back up the project and perform a factory reset. Contact Siemens technical support or arrange for hardware inspection and repair.
Event ID: 30000: Recipe data error. An inconsistency or corruption was detected in recipe data stored on the panel.
Re-transfer the recipe data from the engineering station. Check the storage medium for errors and ensure recipe configurations in the project are correctly defined.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC MP 370 (6AV6446-1BA40-2BA4)?

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 with S7 controllers and can be configured for use with third-party controllers via serial interfaces.

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

The MP 370 is configured using Siemens SIMATIC WinCC flexible 2008 or later. It is not supported by the newer TIA Portal WinCC, so WinCC flexible must be used for project creation and download.

Does the 6AV6446-1BA40-2BA4 support touch input only, or does it also have function keys?

The 6AV6446-1BA40-2BA4 variant of the MP 370 is a touch-only panel. A separate keypad variant of the MP 370 is available, but this specific part number features a resistive analog touch screen without dedicated hardware function keys.

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 stable and within the specified tolerance range to prevent operational faults.

Can the MP 370 be used for data logging and recipe management?

Yes, the MP 370 supports data logging, alarm logging, and recipe management functions. Data can be stored internally or transferred to external USB storage devices for archiving and analysis.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Verify the supply is within tolerance and the connector is firmly seated. Inspect the internal fuse if accessible.

Restore correct 24 V DC supply voltage. If the supply is confirmed 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

Determine whether the issue is a complete lack of response or positional inaccuracy. A miscalibrated touch screen will respond but register incorrect coordinates, while a hardware fault will show no response at all.

Perform a touch screen recalibration via the Windows CE control panel or the SIMATIC HMI startup menu. If the screen is unresponsive, inspect the touch controller connection internally or replace the touch screen assembly.

HMI cannot communicate with the PLC

Check the communication cable between the MP 370 and the PLC. Verify MPI or PROFIBUS address settings on both the panel and the PLC. Use a bus diagnostic tool to check for bus conflicts or termination issues.

Replace or reseat the communication cable. Correct any address conflicts on the MPI or PROFIBUS network. Ensure bus termination resistors are correctly placed at both ends of the network segment.

Panel freezes or restarts unexpectedly during operation

Monitor the supply voltage for instability or voltage drops. Check the operating environment temperature, as overheating can cause unexpected resets. Review the system event log for recorded fault events.

Stabilize the power supply and ensure adequate ventilation around the panel. If overheating is confirmed, improve airflow or reduce ambient temperature. If the issue persists, perform a firmware update or factory reset and reload the project.

Project cannot be downloaded to the panel

Verify the communication connection between the engineering PC and the panel (USB or Ethernet). Check that WinCC flexible is using the correct transfer settings and that the panel is in transfer mode.

Restart the panel and manually activate transfer mode from the startup menu. Ensure the correct COM port or IP address is configured in WinCC flexible. If memory is full, delete old project data from the panel before retrying the download.

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