Siemens 6AV6446-1BA40-1BB3 MP 370

€ 2.995,00

SKU: 6AV6446-1BA40-1BB3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1BA40-1BB3 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 industrial visualization and control tasks, featuring a 12-inch TFT display. This unit serves as a powerful human-machine interface capable of running WinCC flexible runtime software for process visualization and machine control.

The MP 370 (6AV6446-1BA40-1BB3) is equipped with a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch and key operation. It features a 32 MB Flash memory for project storage and 32 MB RAM for runtime operations. Communication interfaces include MPI/PROFIBUS DP and Ethernet (10/100 Mbit/s), enabling integration with SIMATIC S7 PLCs and other controllers. The panel operates on a 24 V DC supply and is built to IP65 protection on the front face for use in harsh industrial environments.

The MP 370 is widely used in manufacturing automation, process industries, and machine building where a robust and versatile HMI solution is required. Its compatibility with SIMATIC S7-300 and S7-400 PLCs makes it a standard choice for system integrators working within the Siemens automation ecosystem. Typical applications include packaging machinery, conveyor systems, press lines, and process plant control panels.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors (TFT)
Touch Technology	Touch screen and membrane keys
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Flash Memory	32 MB
RAM	32 MB
Communication Interface	MPI/PROFIBUS DP, Ethernet 10/100 Mbit/s, RS-422/RS-485
IP/Protection Rating	IP65 (front), IP20 (rear)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI Multi Panel (MP 370)

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 the HMI and PLC if necessary.
Event ID: 10001: Connection timeout to the configured PLC. The HMI did not receive a response from the controller within the expected time.
Check network cabling and bus termination. Verify the PLC is in RUN mode and the communication parameters (baud rate, station address) are correctly configured in the HMI project.
Event ID: 20000: Project download error. The project transfer from the engineering PC to the HMI panel failed or was interrupted.
Check the transfer cable or Ethernet connection between the PC and the HMI. Ensure WinCC flexible is set to the correct transfer mode and the panel is in transfer mode before initiating download.
Event ID: 40000: Tag read/write error. A configured tag could not be read from or written to the PLC.
Verify the tag address in the HMI project matches the actual PLC data block or memory address. Check that the PLC program has not changed the relevant data structures.
Event ID: 70010: System memory low. The available RAM on the HMI panel is insufficient to run the current project.
Reduce the number of active screens, images, or scripts in the project. Consider optimizing the project in WinCC flexible to reduce memory usage.
Event ID: 110000: Backup battery low or missing. The internal backup battery for retaining data and the real-time clock is depleted.
Replace the internal backup battery with the correct replacement type. Refer to the MP 370 operating instructions for the battery replacement procedure.
Event ID: 50001: Screen object configuration error. An object on a configured screen references an invalid or missing tag or resource.
Open the project in WinCC flexible and check for configuration warnings or errors. Correct any invalid tag references or missing resources and re-download the project.

Frequently Asked Questions

Which PLC families are compatible with the Siemens MP 370 (6AV6446-1BA40-1BB3)?

The MP 370 is primarily designed for use with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It also supports communication with S7-200 and third-party controllers via the RS-422/RS-485 interface using appropriate drivers in WinCC flexible.

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

The MP 370 is configured using Siemens WinCC flexible (2004 or later versions). Projects are created on a PC and transferred to the panel via Ethernet, MPI, or a USB/serial connection.

Does the 6AV6446-1BA40-1BB3 support Ethernet communication?

Yes, this variant of the MP 370 includes an integrated Ethernet interface supporting 10/100 Mbit/s, allowing communication with PLCs and SCADA systems over a standard network.

What is the operating voltage for the MP 370?

The MP 370 operates on a 24 V DC supply. Ensure the power supply can deliver sufficient current, as the panel consumes approximately 30 W under normal operating conditions.

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

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

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply terminals of the panel. Measure voltage at the connector and verify polarity. Check internal fuse if accessible.

Restore correct 24 V DC supply. If voltage is present but display remains off, the internal power supply board or backlight inverter may be faulty and require replacement or professional repair.

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

Verify the MPI/PROFIBUS cable is correctly connected and terminated at both ends. Check that the station address configured in the HMI project matches the PLC address. Confirm the baud rate settings are identical on both devices.

Correct any address or baud rate mismatches in the WinCC flexible project and re-download. Replace the MPI/PROFIBUS cable if continuity testing reveals a fault. Ensure bus termination resistors are enabled only at the physical ends of the bus.

Touchscreen does not respond or responds inaccurately

Check for physical damage or contamination on the touch surface. Attempt to recalibrate the touchscreen through the panel's Control Panel settings in the operating system.

Clean the touch surface with a soft, dry cloth. Perform a touchscreen recalibration via the SIMATIC HMI Control Panel. If the touchscreen remains unresponsive after recalibration, the touch foil or controller board may need replacement.

Project transfer from PC to HMI fails

Confirm the panel is set to Transfer mode. Check the Ethernet or MPI cable connection between the PC and the panel. Verify the IP address or MPI address settings in WinCC flexible match the panel configuration.

Set the panel to Transfer mode via the Start Center or Control Panel. Correct the communication settings in WinCC flexible. If using Ethernet, ensure both the PC and panel are on the same subnet. Retry the transfer after confirming all settings.

Real-time clock loses time after power off

The internal backup battery is likely depleted. This battery maintains the real-time clock and certain volatile data when the panel is powered off.

Replace the internal backup battery with the correct type as specified in the MP 370 operating manual. After replacement, reset and synchronize the clock via the Control Panel or through the PLC communication.

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