Siemens 6AV6446-7BA40-2BY4 SIMATIC MP 370

Name: Siemens 6AV6446-7BA40-2BY4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-7BA40-2BY4
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-7BA40-2BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-7BA40-2BY4 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 display and is part of the SIMATIC MP 370 series, which represents a high-performance panel PC class within Siemens' HMI portfolio. It is intended for use as a stationary operator interface in industrial environments requiring robust graphical visualization and process control.

The MP 370 panel is equipped with a high-resolution color TFT display and supports touch screen operation, enabling intuitive operator interaction. It runs on Microsoft Windows CE and is compatible with Siemens WinCC flexible runtime software, allowing for complex visualization projects. Communication interfaces include PROFIBUS DP and MPI, enabling direct integration with SIMATIC S7 PLCs, as well as Ethernet for network connectivity. The unit supports a wide range of communication drivers and offers expandable memory via CompactFlash cards 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 large display size and touch interface make it suitable for applications requiring detailed process overviews, trend displays, and alarm management. The panel is particularly common in industries such as automotive manufacturing, food and beverage processing, and chemical production where reliable, continuous HMI operation is essential.

Technical Specifications

Display Size	15 inch
Display Type	TFT color
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	64,000 colors
Touch Technology	Resistive touch screen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Max. 60 W
Communication Interface	PROFIBUS DP, MPI, Ethernet (RJ45)
Memory	12 MB user memory (expandable via CompactFlash)
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 panel)
Mounting	Panel mounting
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 or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both devices if necessary.
Event ID: 10001: Connection to PLC interrupted during runtime. The HMI panel has lost communication with the configured controller.
Inspect physical communication cables for damage. Verify network addresses and baud rate settings. Check PLC operating state and re-establish connection.
Event ID: 20000: Tag read error. The HMI is unable to read a configured process tag from the PLC.
Verify the tag address in the HMI project matches the actual PLC data block or memory address. Check PLC program for correct data area availability.
Event ID: 40000: Project download error. Transfer of the HMI project to the panel has failed.
Check the transfer cable or network connection between the engineering PC and the panel. Ensure the panel is set to Transfer mode and that WinCC flexible is correctly configured for the target device.
Event ID: 50000: Runtime system error. WinCC flexible runtime has encountered an internal fault and may terminate.
Restart the HMI panel. If the error persists, reload the project via WinCC flexible. Check for corrupted project files or insufficient memory on the CompactFlash card.
Event ID: 70000: Insufficient memory. The available user memory or CompactFlash storage is critically low.
Delete unnecessary archived data, alarm logs, or recipe files. Replace the CompactFlash card with a higher-capacity card if required.
Event ID: 30000: Script or function error in the HMI project. A configured script or function has returned an error during execution.
Review the script logic in WinCC flexible engineering software. Check for division-by-zero errors, invalid tag references, or unsupported functions for the target device.

Frequently Asked Questions

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

The MP 370 is configured using Siemens WinCC flexible engineering software. The project is then transferred to the panel via Ethernet, MPI, or a USB/serial connection depending on the available interface.

Which Siemens PLCs are compatible with the SIMATIC MP 370?

The MP 370 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces, and with S7-300/400 via Ethernet. It also supports communication with third-party controllers through standard drivers.

What is the supply voltage for the 6AV6446-7BA40-2BY4?

The panel operates on 24 V DC. The power supply must be capable of providing sufficient current to meet the panel's maximum power consumption of approximately 60 W.

Can the CompactFlash card be replaced or upgraded?

Yes, the CompactFlash card used for project storage and data logging can be replaced with a compatible card of higher capacity, allowing for extended data archiving and larger project files.

Is the front panel of the MP 370 rated for washdown or dusty environments?

The front panel carries an IP65 protection rating, making it suitable for environments with dust and water jets. The rear of the unit does not carry the same rating and should be protected accordingly.

Troubleshooting

Display remains blank after power on

Measure 24 V DC supply voltage at the power connector. Check internal fuse if accessible. Observe whether the backlight illuminates briefly on startup.

Verify the 24 V DC supply is within tolerance. If the backlight is faulty, the display panel or inverter board may require replacement. If no power is detected, inspect the power supply unit feeding the panel.

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 service menu.

Clean the touch screen surface with a soft, dry cloth. Perform a touch screen recalibration. If inaccuracy persists after recalibration, the resistive touch overlay may need replacement.

HMI panel fails to communicate with the PLC

Verify cable connections on the PROFIBUS DP, MPI, or Ethernet interface. Check bus termination at both ends of the PROFIBUS segment. Confirm that the PLC address and baud rate in the HMI project match the physical configuration.

Replace or reseat communication cables. Correct address and baud rate settings in WinCC flexible and reload the project. Ensure PROFIBUS termination resistors are active only at the two physical ends of the bus segment.

Project cannot be transferred to the panel

Confirm the panel is in Transfer mode (accessible via the Start Center on Windows CE). Check that the IP address or MPI address of the panel matches the settings in WinCC flexible transfer configuration.

Set the panel to Transfer mode manually via the Start Center. Correct the target address in WinCC flexible. If using Ethernet, verify network connectivity with a ping test before initiating transfer.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or ripple using a multimeter or oscilloscope. Review the alarm and event log on the panel for runtime errors. Inspect the CompactFlash card for errors or insufficient free space.

Stabilize the power supply and ensure it is adequately rated. Replace the CompactFlash card if it shows errors. Reload the WinCC flexible project to rule out project file corruption.

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