Siemens 6AV6446-7AA40-0BY3 SIMATIC MP 370

Name: Siemens 6AV6446-7AA40-0BY3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-7AA40-0BY3
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-7AA40-0BY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-7AA40-0BY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization tasks. This unit features a 15-inch TFT color display and is part of Siemens' high-performance panel range, offering robust operator interface capabilities for industrial environments. The MP 370 series bridges the gap between standard operator panels and full PC-based SCADA systems.

The MP 370 is equipped with a high-resolution 1024 x 768 (XGA) TFT display capable of rendering up to 65,536 colors, providing clear visualization of complex process graphics. It supports both touch screen and function key operation, offering flexible interaction modes for operators. Communication interfaces include MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling integration into a wide range of Siemens and third-party automation architectures. The panel runs on Windows CE and is configured using Siemens WinCC flexible engineering software, supporting project transfer via Ethernet, MPI, or memory card.

The SIMATIC MP 370 is widely deployed in manufacturing automation, process industries, and machine building applications where a large, high-resolution display and multi-protocol connectivity are required. It is commonly found in automotive assembly lines, chemical processing plants, packaging machinery, and energy management systems. Its compatibility with SIMATIC S7 PLCs and support for PROFIBUS DP makes it a natural fit for Siemens-based automation architectures.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	65,536 colors
Display Type	TFT color LCD
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 40 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Operating System	Windows CE
Configuration Software	WinCC flexible 2004 or higher
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: 1000: System startup event — the HMI panel has completed its boot sequence and is initializing the runtime environment.
No action required under normal conditions. If the panel fails to proceed past this event, check the project file integrity and re-transfer the project using WinCC flexible.
Event ID: 10000: Connection to the PLC could not be established or has been lost during runtime.
Verify MPI/PROFIBUS DP or Ethernet cable connections. Check PLC address settings and ensure the communication parameters in the HMI project match the PLC configuration.
Event ID: 10001: Communication timeout — no response received from the configured PLC within the expected time window.
Check network cabling and termination resistors on PROFIBUS segments. Verify PLC is in RUN mode and confirm baud rate settings match on both devices.
Event ID: 20000: Tag read error — the HMI was unable to read a configured tag from the PLC.
Verify the tag address exists in the PLC program and that the data type matches the HMI tag configuration. Check for PLC program changes that may have altered memory addresses.
Event ID: 20001: Tag write error — the HMI was unable to write a value to a configured PLC tag.
Confirm the PLC is not in a write-protected state. Verify the tag address and data type in the HMI project. Check user authorization levels if access control is configured.
Event ID: 40000: Project load error — the runtime project could not be loaded from internal memory or memory card.
Re-transfer the project from the engineering PC using WinCC flexible. If using a memory card, verify the card is properly seated and not corrupted. Format and reload if necessary.
Event ID: 50000: Internal system error — a critical runtime fault has occurred within the Windows CE operating system.
Perform a warm restart of the panel. If the error persists, perform a factory reset via the Control Panel and re-transfer the project. Check for firmware compatibility with the project version.

Frequently Asked Questions

What communication protocols does the SIMATIC MP 370 (6AV6446-7AA40-0BY3) support?

The MP 370 supports MPI, PROFIBUS DP, Ethernet (TCP/IP), and RS-422/485 serial communication. This allows direct connection to SIMATIC S7 PLCs as well as third-party controllers via serial protocols.

Which engineering software is required to configure this panel?

The panel is configured using Siemens WinCC flexible 2004 or a later compatible version. Projects are transferred to the panel via Ethernet, MPI, or a compatible memory card.

What is the supply voltage for the MP 370?

The panel operates on 24 V DC. Ensure the power supply is adequately rated for the panel's power consumption of approximately 40 W.

Is the front of the panel rated for wash-down or dusty environments?

Yes, the front panel carries an IP65 protection rating, making it suitable for environments with dust and water spray. The rear of the unit is rated IP20 and must be installed in a suitable enclosure.

Can this panel be used with non-Siemens PLCs?

Yes, the MP 370 supports communication with third-party PLCs via RS-422/485 serial interfaces using standard protocols such as Modbus RTU, depending on the driver configuration in WinCC flexible.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check that the voltage is within the acceptable range and that polarity is correct. Inspect the internal backlight fuse if accessible.

Correct any supply voltage issues. If the supply is confirmed good but the display remains blank, the backlight inverter or TFT display assembly may require replacement. A repair or refurbishment of the display module is recommended.

Panel boots to Windows CE desktop but WinCC flexible runtime does not start

Check whether a valid project is stored in the panel's internal memory or on the inserted memory card. Navigate to the Control Panel and verify the runtime startup settings.

Re-transfer the project from the engineering PC using WinCC flexible. Ensure the project was compiled without errors and is compatible with the panel's firmware version. Update firmware if necessary.

Touchscreen input is inaccurate or unresponsive

Access the touchscreen calibration utility via the Windows CE Control Panel. Check for physical damage or contamination on the touch surface.

Perform a touchscreen recalibration using the built-in calibration tool. Clean the touch surface with a soft, dry cloth. If calibration does not resolve the issue, the resistive touch overlay may need replacement.

Communication loss between HMI and PLC during operation

Check the MPI or PROFIBUS DP cable connections and verify bus termination at both ends of the segment. Use a PROFIBUS diagnostic tool to check for bus errors or address conflicts.

Replace or reseat communication cables. Verify that the HMI station address does not conflict with other devices on the bus. Confirm baud rate and bus parameters match across all connected devices.

Panel displays 'No project' message after power cycle

The internal flash memory may have lost the stored project, or the memory card containing the project has been removed or corrupted.

Re-transfer the project using WinCC flexible via Ethernet or MPI. If using a memory card, verify the card is properly formatted and the project is correctly stored. Consider transferring the project to internal memory for greater reliability.

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