Siemens 6AV6446-1BA40-0BB4 SIMATIC MP 370

Name: Siemens 6AV6446-1BA40-0BB4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1BA40-0BB4
Price: 2995.00 EUR
Availability: InStock

€ 2.995,00

Condition

Clear

SKU: 6AV6446-1BA40-0BB4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1BA40-0BB4 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level visualization and operator control tasks. This panel features a 12-inch TFT display and is part of Siemens' high-performance Multi Panel series, which bridges the gap between standard operator panels and full PC-based systems. It is intended for use as a standalone HMI unit in industrial automation environments.

The MP 370 (6AV6446-1BA40-0BB4) 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 Windows CE and is configurable using Siemens WinCC flexible engineering software. The panel provides multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling integration with SIMATIC S7 PLCs and other controllers. It features a compact flash card slot for project and data storage, and an integrated USB port for peripherals.

The SIMATIC MP 370 is widely used in machine building, automotive manufacturing, food and beverage processing, and general factory automation. Its robust industrial design and broad communication capabilities make it suitable for applications requiring reliable process visualization, recipe management, alarm logging, and trend display at the machine level. The panel is particularly well suited for installations where both touch and key-based operation may be required alongside connectivity to SIMATIC S7-300 and S7-400 controller families.

Technical Specifications

Display Size	12 inch
Display Type	TFT Color
Display Resolution	800 x 600 pixels (SVGA)
Touch Technology	Resistive Touch Screen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Memory	12 MB user memory (project)
Storage Expansion	Compact Flash card slot
USB Interface	1 x USB (Type A)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
IP/Protection Rating	IP65 (front), IP20 (rear)
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 or has been lost.
Check MPI/PROFIBUS/Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both PLC and HMI panel.
Event ID: 10001: Connection to PLC interrupted during runtime. The HMI panel lost communication with the configured controller.
Inspect physical wiring and connectors. Check network load and bus configuration. Verify PLC is in RUN mode and the correct communication driver is loaded in the HMI project.
Event ID: 20000: Project download error. The project transfer from the engineering PC to the HMI panel failed.
Ensure the correct transfer channel is selected in WinCC flexible. Verify IP address or MPI address settings. Check that 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 WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for address conflicts.
Event ID: 50000: Alarm buffer overflow. The number of pending alarms has exceeded the configured alarm buffer capacity.
Acknowledge and clear existing alarms. Increase the alarm buffer size in the WinCC flexible project configuration if overflow recurs frequently.
Event ID: 60000: Recipe data error. A recipe record could not be read from or written to the configured storage location.
Check that the Compact Flash card is properly inserted and not write-protected. Verify recipe configuration in WinCC flexible and ensure sufficient storage space is available.
Event ID: 70000: System memory low. Available runtime memory on the HMI panel is insufficient to execute the current project.
Reduce project size by optimizing graphics and scripts. Restart the panel to free memory. If the issue persists, consider splitting the project or upgrading to a panel with greater memory capacity.

Frequently Asked Questions

Which engineering software is used to configure the SIMATIC MP 370?

The MP 370 is configured using Siemens WinCC flexible software. Projects are created on a PC and transferred to the panel via MPI, PROFIBUS, Ethernet, or USB.

Which Siemens PLCs are compatible with the MP 370 (6AV6446-1BA40-0BB4)?

The MP 370 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs, as well as S5 controllers via appropriate communication drivers. It can also communicate with third-party controllers using standard protocols.

What communication interfaces does the 6AV6446-1BA40-0BB4 support?

This panel supports MPI, PROFIBUS DP, Ethernet (TCP/IP), and RS-422/485 serial interfaces, providing flexible connectivity options for various network topologies.

Can the MP 370 panel be operated via touch screen only?

Yes, the 6AV6446-1BA40-0BB4 variant supports resistive touch screen operation. Some MP 370 variants also include a keypad, but this model is primarily touch-operated.

What storage media does the MP 370 support for project and data storage?

The MP 370 supports Compact Flash cards for project storage, data logging, and recipe storage. A USB port is also available for connecting external storage devices or peripherals.

Troubleshooting

Display remains blank after power on

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

Ensure the power supply is correctly wired and providing stable 24 V DC. Replace any blown fuse. If the backlight has failed, the display panel or backlight inverter may require replacement.

HMI panel fails to communicate with SIMATIC S7 PLC via MPI or PROFIBUS

Verify MPI/PROFIBUS cable connections and bus termination at both ends. Check that the panel's bus address is unique and matches the project configuration. Use a bus diagnostic tool to check for bus errors.

Correct any wiring faults or missing termination resistors. Update the HMI project with the correct PLC address and communication parameters, then re-download the project to the panel.

Touch screen does not respond or responds inaccurately

Check for physical damage or contamination on the touch screen surface. Attempt to recalibrate the touch screen through the Windows CE Control Panel or the panel's startup menu.

Clean the touch screen surface with a soft, dry cloth. Perform a touch screen recalibration via the system settings. If calibration does not resolve the issue, the touch screen overlay may need to be replaced.

Project transfer from PC to panel fails

Confirm the panel is set to Transfer mode. Verify the communication channel settings (Ethernet IP address or MPI address) match between WinCC flexible and the panel. Check firewall settings on the PC if using Ethernet transfer.

Set the panel to Transfer mode via the Start Center. Correct any mismatched address settings. Disable PC firewall temporarily to test Ethernet transfer. Retry the download using WinCC flexible.

Panel reboots unexpectedly or freezes during operation

Check the stability of the 24 V DC power supply for voltage dips or ripple. Review the project for memory-intensive scripts or large graphic objects that may cause runtime overload.

Ensure the power supply is adequately rated and free of voltage fluctuations. Optimize the WinCC flexible project by reducing script complexity and graphic file sizes. Update the panel firmware to the latest version if available.

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