Siemens 6AV6446-1AA40-1BB3 SIMATIC MP 370

Name: Siemens 6AV6446-1AA40-1BB3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA40-1BB3
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1AA40-1BB3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-1BB3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization applications. This unit 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 SCADA systems.

The MP 370 (6AV6446-1AA40-1BB3) is equipped with a 12" TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch screen operation. It runs on a Windows CE operating system and supports WinCC flexible runtime for project execution. Communication interfaces include PROFIBUS DP, MPI, and Ethernet (TCP/IP), enabling integration with a wide range of Siemens S7 PLCs and third-party controllers. The panel provides USB ports for data transfer and peripheral connectivity, along with a CompactFlash card slot for project storage and data logging.

The SIMATIC MP 370 is widely deployed in manufacturing automation, machine tool control, packaging machinery, and process plant environments. Its robust construction and broad communication capability make it suitable for applications requiring reliable operator interaction with Siemens S7-300, S7-400, and S7-1500 PLC systems. Industries such as automotive, food and beverage, chemical processing, and general factory automation commonly utilize this panel for supervisory control and data visualization tasks.

Technical Specifications

Display Size	12 inch
Display Type	TFT Color LCD
Display Resolution	800 x 600 pixels (SVGA)
Touch Technology	Resistive Touch Screen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	PROFIBUS DP, MPI, Ethernet (TCP/IP), USB
Memory	CompactFlash card slot for project and data storage
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
Series/Product Family	SIMATIC MP 370
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Communication error between HMI panel and PLC. Connection to the configured controller cannot be established.
Check PROFIBUS/MPI/Ethernet cabling and termination resistors. Verify PLC address settings match the HMI project configuration. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to PLC interrupted during runtime. The previously established communication link has been lost.
Inspect cable connections and connectors for damage. Check network topology and bus termination. Restart the HMI panel and PLC if the connection is not automatically restored.
Event ID: 20000: Tag read error. The HMI panel is unable to read the value of 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 PLC program for address conflicts.
Event ID: 20001: Tag write error. A write operation to a PLC tag has failed.
Check that the target PLC memory area is not write-protected. Verify the tag address and data type configuration in the WinCC flexible project.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the HMI panel has failed.
Ensure the transfer cable or network connection is properly established. Check that the panel is in Transfer mode. Verify sufficient storage space on the CompactFlash card.
Event ID: 50000: Runtime system error. An internal error has occurred within the WinCC flexible runtime environment.
Restart the HMI panel. If the error persists, reload the project from WinCC flexible. Check for project configuration errors or corrupted project files.
Event ID: 60000: System memory low. Available RAM for the runtime application is critically low.
Reduce the number of simultaneously active screens or logged tags. Optimize the project to reduce memory usage. Consider archiving or clearing data logs stored on the CompactFlash card.

Frequently Asked Questions

Which PLC systems are compatible with the SIMATIC MP 370 (6AV6446-1AA40-1BB3)?

The MP 370 is primarily designed for use with Siemens SIMATIC S7-300, S7-400, and S7-1500 PLCs via MPI, PROFIBUS DP, or Ethernet interfaces. It can also communicate with third-party 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 software. The compiled project is then transferred to the panel via Ethernet, USB, or a direct MPI/PROFIBUS connection.

What is the supply voltage for the 6AV6446-1AA40-1BB3?

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

Does the MP 370 support data logging and recipe management?

Yes, the SIMATIC MP 370 supports data logging and recipe management functions within WinCC flexible runtime. Data and recipes can be stored on the CompactFlash card inserted into the panel.

What is the IP protection rating of the MP 370 front panel?

The front panel of the MP 370 achieves IP65 protection, making it resistant to dust ingress and low-pressure water jets, suitable for industrial cabinet door mounting.

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 or damaged power input wiring.

Restore the 24 V DC supply to within specification. If the supply is correct but the display remains blank, the internal power supply board or backlight inverter may require replacement.

Touch screen does not respond or responds inaccurately

Check whether the touch screen is physically damaged or contaminated. Attempt to recalibrate the touch screen via the Windows CE control panel or the SIMATIC HMI startup menu.

Clean the touch screen surface with a soft, dry cloth. Perform a touch screen recalibration through the panel's startup menu. If the issue persists, the touch screen digitizer assembly may need to be replaced.

HMI panel fails to communicate with the PLC

Verify the communication cable type and wiring between the panel and PLC. Check that the MPI or PROFIBUS address configured in the WinCC flexible project matches the PLC settings. Use a bus diagnostic tool to check for bus errors.

Replace or reseat the communication cable. Correct any address mismatches in the project configuration. Ensure bus termination resistors are correctly placed at both ends of the PROFIBUS segment.

Project transfer from WinCC flexible fails

Confirm the panel is set to Transfer mode via the startup menu. Check the Ethernet or USB connection between the engineering PC and the panel. Verify that the WinCC flexible version is compatible with the panel firmware version.

Switch the panel to Transfer mode manually. Use a known-good USB or Ethernet cable. Update the panel firmware if there is a version mismatch between the project and the panel runtime.

Panel repeatedly restarts or crashes during runtime

Check the CompactFlash card for errors or insufficient free space. Review the WinCC flexible project for configuration errors such as invalid tag addresses or script errors that could cause runtime exceptions.

Replace the CompactFlash card with a new, compatible card and reload the project. Correct any identified project configuration errors in WinCC flexible and re-transfer the project to the panel.

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