Siemens 6AV6446-3AA40-2BY4 SIMATIC MP 370

Name: Siemens 6AV6446-3AA40-2BY4 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-3AA40-2BY4
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-3AA40-2BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA40-2BY4 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 6AV6446-3AA40-2BY4 variant is equipped with a touch-screen interface and supports a display resolution of 1024 x 768 pixels (XGA) with 65,536 colors. It integrates multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling seamless connectivity to SIMATIC S7 PLCs and other controllers. The panel runs on the Windows CE operating system and supports WinCC flexible runtime software for configuration and visualization. Onboard memory and a CompactFlash card slot provide flexible data storage and project management options.

The MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant environments where a large, high-resolution display and reliable PLC communication are required. Its robust industrial housing and wide operating temperature range make it suitable for installation in control cabinets and harsh production environments. The panel's compatibility with the SIMATIC software ecosystem allows straightforward integration into existing Siemens 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	Max. 60 W
Operating System	Windows CE
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Memory	12 MB user memory (project); 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/Protection Rating	IP65 (front panel)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI MP 370

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected 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 the PLC address and communication parameters in WinCC flexible match the hardware configuration. Restart both the panel and the PLC if necessary.
Event ID: 10001: Communication timeout detected on a configured PLC connection. The panel did not receive a response from the controller within the expected time window.
Check network cabling and bus termination. Verify the PLC is in RUN mode and the station address is correctly configured. Reduce bus load or increase the timeout value in the connection settings.
Event ID: 20000: Project download error. The project transfer from the engineering PC to the HMI panel was interrupted or failed.
Ensure the correct transfer channel is selected (Ethernet or MPI). Verify the IP address or MPI address of the panel. Check that WinCC flexible is set to the correct panel type and OS version before retransmitting.
Event ID: 40000: Tag read/write error. A configured tag could not be read from or written to the connected controller.
Verify the tag address in WinCC flexible matches the actual PLC data block or memory address. Check that the PLC program is running and the relevant data areas are accessible.
Event ID: 50000: System memory low warning. Available runtime memory on the HMI panel is critically low, which may affect panel performance or stability.
Reduce the number of active screens or objects. Archive or delete unnecessary data logs and alarm logs stored on the panel. Consider increasing the CompactFlash card capacity.
Event ID: 60000: CompactFlash card error. The panel cannot read from or write to the inserted CompactFlash card.
Remove and reinsert the CompactFlash card. Check the card for damage or corruption using a PC card reader. Replace the CompactFlash card if errors persist.
Event ID: 70000: Alarm log overflow. The alarm buffer on the HMI panel has reached its maximum capacity and older entries are being overwritten.
Archive alarm logs regularly to the CompactFlash card or a network location. Increase the configured alarm buffer size in WinCC flexible if possible, and review the alarm configuration to suppress nuisance alarms.

Frequently Asked Questions

Which PLC families are compatible with the SIMATIC MP 370?

The MP 370 is compatible with SIMATIC S7-200, S7-300, S7-400, and S7-1200 PLCs via MPI, PROFIBUS DP, or Ethernet interfaces. It also supports connections to third-party controllers via serial protocols such as Modbus RTU.

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

The MP 370 is configured using Siemens WinCC flexible engineering software. The project is created on a PC and then transferred to the panel via Ethernet, MPI, or a CompactFlash card.

What is the supply voltage for the 6AV6446-3AA40-2BY4?

The panel requires a 24 V DC power supply. Ensure the power source is within the specified tolerance range to avoid damage or operational faults.

Can the MP 370 operate as a standalone SCADA station?

The MP 370 is designed as a machine-level HMI panel and is not intended as a full SCADA server. However, it can display process data, manage alarms, and log data locally to a CompactFlash card within its WinCC flexible runtime environment.

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

The front panel of the MP 370 achieves an IP65 protection rating, making it suitable for installation in environments where dust and water jets may be present.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Verify the supply is within the specified tolerance. Inspect the internal fuse if accessible.

Restore the correct 24 V DC supply. If the supply is correct and the display remains blank, the backlight or internal power supply board may be faulty and require replacement.

Touch screen does not respond or responds inaccurately

Attempt to recalibrate the touch screen through the panel's Start Center or Control Panel settings. Check for physical damage or contamination on the screen surface.

Perform a touch screen calibration via the Windows CE Control Panel. Clean the screen surface with a soft, dry cloth. If calibration fails repeatedly, the touch foil or controller board may need replacement.

Panel fails to communicate with the PLC via PROFIBUS DP

Verify the PROFIBUS address set on the HMI matches the address configured in WinCC flexible. Check bus cable termination at both ends of the PROFIBUS segment and inspect the cable for damage.

Correct any address mismatches in the WinCC flexible project and retransfer the project. Replace damaged PROFIBUS cables and ensure proper termination resistors are installed at the bus endpoints.

Project transfer from PC to panel fails

Confirm the transfer channel settings in WinCC flexible match the physical connection used (Ethernet IP address or MPI address). Check that the panel is in Transfer mode via the Start Center.

Set the panel to Transfer mode manually from the Start Center. Verify the PC and panel are on the same network subnet if using Ethernet. Retry the transfer after confirming all settings match.

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 logs on the panel for any recorded system errors prior to the reboot.

Stabilize the power supply and ensure adequate current capacity. If the issue persists, reload the WinCC flexible project to the panel. In cases of repeated freezing, a CompactFlash card failure or corrupted project file may be the cause and should be investigated.

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