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

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

€ 2.495,00

Condition

Clear

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

Description
Additional information

The Siemens 6AV6446-6BA40-2BY4 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 color display and is part of Siemens' high-performance operator panel series, offering robust human-machine interface capabilities for industrial environments. The MP 370 series bridges the gap between compact operator panels and full PC-based SCADA systems.

The panel is equipped with a resistive touchscreen and an integrated function key row, providing flexible operator input options. It supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling integration with a wide range of Siemens SIMATIC S7 controllers as well as third-party PLCs. The unit runs on Windows CE and is configured using Siemens WinCC flexible engineering software, supporting project memory via CompactFlash card. The display delivers 256-color output at a resolution of 1024 x 768 pixels, suitable for detailed process graphics.

The SIMATIC MP 370 is widely deployed in manufacturing automation, machine tool control, packaging machinery, and process plant environments. Its combination of touch and key-based input, broad communication compatibility, and rugged industrial construction make it suitable for applications requiring reliable operator interaction in harsh shop-floor conditions. Industries such as automotive, food and beverage, chemical processing, and general factory automation commonly utilize this panel for supervisory control and data visualization.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	256 colors
Display Type	TFT color LCD
Touch Technology	Resistive touchscreen
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
Memory / Storage	CompactFlash card slot
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
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 1000: Project transfer error — communication between the engineering PC and the panel could not be established during download.
Check the transfer cable and interface settings. Verify the correct transfer mode is selected on the panel (Transfer mode active). Confirm matching baud rate and interface parameters in WinCC flexible.
Event ID: 1003: Project file incompatible — the project loaded onto the panel was created with an incompatible version of WinCC flexible.
Recompile and transfer the project using a compatible version of WinCC flexible that matches the panel firmware version.
Event ID: 10000: PLC connection lost — the HMI panel has lost communication with the configured PLC.
Check the PROFIBUS or MPI cable connections and termination resistors. Verify PLC is powered and running. Check configured station address and baud rate settings.
Event ID: 10001: PLC connection established — communication with the PLC has been successfully restored after a previous loss.
Informational event. No corrective action required. Monitor for recurring disconnections which may indicate cable or network issues.
Event ID: 20000: Tag read error — the panel cannot read the value of a configured tag from the PLC.
Verify the tag address is correct and exists in the PLC program. Check PLC data block or memory area is accessible and not write-protected.
Event ID: 20001: Tag write error — the panel cannot write a value to the configured PLC tag.
Check that the target PLC memory area is not read-only. Verify operator permissions and tag configuration in WinCC flexible.
Event ID: 40000: System memory low — available runtime memory on the panel is critically low.
Reduce the number of active screens or graphical objects. Archive or clear alarm logs. Consider reducing project complexity or upgrading CompactFlash storage.
Event ID: 70010: Backup battery low — the internal backup battery voltage is below the minimum threshold.
Replace the internal lithium backup battery. Refer to the device manual for battery type and replacement procedure to avoid data loss.

Frequently Asked Questions

Which engineering software is used to configure the MP 370 (6AV6446-6BA40-2BY4)?

The MP 370 is configured using Siemens WinCC flexible. The correct version of WinCC flexible must be used to match the panel's firmware version to ensure project compatibility.

What communication interfaces are available on this panel?

The 6AV6446-6BA40-2BY4 supports MPI, PROFIBUS DP, Ethernet (TCP/IP), and RS-422/485 interfaces, allowing connection to SIMATIC S7 PLCs and a range of third-party controllers.

Is the MP 370 compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the MP 370 can communicate directly with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP, and also supports S7 communication over Ethernet.

What is the display resolution and size of this unit?

The panel features a 15-inch TFT color display with a resolution of 1024 x 768 pixels (XGA) and supports 256 colors.

How is the project stored on the MP 370?

Projects are stored on a CompactFlash card, which is inserted into the panel. The CompactFlash card also serves as the runtime storage medium for the Windows CE operating system and HMI application.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector. Check that the supply is within the specified tolerance (typically 19.2 V to 28.8 V DC). Inspect the internal fuse if accessible.

Correct the supply voltage if out of range. Replace a blown internal fuse with the correct rating as specified in the device manual. If the power supply is confirmed good and the display remains blank, the backlight inverter or display unit may require replacement.

Panel fails to establish communication with the PLC

Verify the cable type and wiring between the panel and PLC. Check the configured MPI or PROFIBUS station address on both the panel and PLC. Confirm bus termination is correctly applied at both ends of the PROFIBUS segment.

Replace or reseat the communication cable. Correct any address conflicts. Ensure bus termination resistors are enabled only at the physical ends of the bus. Re-download the project with corrected communication parameters via WinCC flexible.

Touchscreen does not respond accurately or is misaligned

The resistive touchscreen may have drifted and requires recalibration. Access the panel's Control Panel via the Start menu in Windows CE and open the touchscreen calibration utility.

Run the touchscreen calibration procedure from the Windows CE Control Panel. If calibration does not resolve the issue, inspect the touchscreen surface for damage or contamination. A faulty touchscreen overlay may need to be replaced.

Project transfer from PC to panel fails repeatedly

Check the transfer interface settings in WinCC flexible and confirm the panel is set to Transfer mode. Verify the Ethernet or MPI/PROFIBUS cable is functional. Confirm that firewall or antivirus software on the PC is not blocking the transfer.

Set the panel to Transfer mode via the panel's Loader menu. Use a known-good cable and verify IP address or MPI address settings match between WinCC flexible and the panel. Temporarily disable PC firewall software during transfer if necessary.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or ripple, which can cause instability. Inspect the CompactFlash card for errors or corruption. Review the system event log on the panel for recorded fault events prior to the reboot.

Stabilize the power supply and ensure adequate current capacity. Replace the CompactFlash card with a new industrial-grade card and reload the project. If the issue persists, perform a firmware update or contact Siemens technical support for further diagnostics.

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