Siemens 6AV6446-3AA40-2AY3 MP 370

€ 2.495,00

SKU: 6AV6446-3AA40-2AY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA40-2AY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI Multi Panel series, designed for demanding machine-level visualization and operator control tasks. This panel is part of Siemens' established SIMATIC HMI product line and features a 12-inch TFT display, making it suitable for complex process visualization. The unit operates as a standalone HMI device capable of running WinCC flexible runtime projects.

The MP 370 (6AV6446-3AA40-2AY3) is equipped with a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch screen operation. It features multiple communication interfaces including MPI/PROFIBUS DP and Ethernet (10/100 Mbit/s), enabling integration into a wide range of Siemens automation architectures. The panel runs on a Windows CE operating system, provides USB ports for peripherals and data transfer, and includes a CompactFlash card slot for project storage and data logging. It is configured and programmed using Siemens WinCC flexible engineering software.

The MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and general industrial automation environments. Its large display area and robust communication capabilities make it well suited for applications requiring detailed process overviews, recipe management, alarm logging, and trend displays. The panel is typically mounted in control cabinet doors or operator panels where a high-visibility, interactive interface is required.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
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 10/100 Mbit/s, RS-422/RS-485
USB Ports	2 x USB 1.1
Memory (User)	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
IP Rating (Rear)	IP20
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI Multi Panel (MP 370)

Common Error Codes & System Events

Event ID: 1000: Project transfer error — communication between the engineering PC and the panel could not be established during project download.
Check the communication cable and interface settings. Verify the correct transfer channel (MPI, Ethernet, or USB) is selected in both WinCC flexible and the panel transfer settings.
Event ID: 10000: Runtime startup failure — WinCC flexible runtime could not be started on the panel.
Check available memory on the CompactFlash card. Re-transfer the project from WinCC flexible. If the issue persists, perform a panel reset to factory defaults.
Event ID: 20000: PLC connection lost — the HMI panel has lost communication with the configured PLC/controller.
Check MPI/PROFIBUS DP or Ethernet cabling and termination resistors. Verify PLC address settings match the HMI project configuration. Check PLC operating state.
Event ID: 40000: Tag read/write error — a configured tag could not be read from or written to the connected PLC.
Verify the PLC data block and address referenced in the HMI project exist and are accessible. Check PLC program for address conflicts.
Event ID: 50000: Alarm buffer overflow — the alarm buffer on the panel has reached its maximum capacity.
Acknowledge and clear pending alarms. Review alarm configuration in WinCC flexible to reduce alarm frequency or increase buffer size settings.
Event ID: 70000: Recipe data error — an error occurred during reading or writing of recipe data.
Check the recipe configuration in WinCC flexible. Verify the CompactFlash card is properly inserted and has sufficient free space. Re-transfer the project if recipe structure has changed.
Event ID: 110000: System time synchronization error — the panel could not synchronize its system clock with the configured time source.
Check the time synchronization settings in the HMI project. Verify network connectivity if NTP synchronization is configured. Set the time manually if synchronization is not required.

Frequently Asked Questions

What engineering software is required to program the MP 370 (6AV6446-3AA40-2AY3)?

The MP 370 is programmed using Siemens WinCC flexible software. The project is then transferred to the panel via MPI, PROFIBUS DP, Ethernet, or USB connection.

What communication interfaces are available on this panel?

The 6AV6446-3AA40-2AY3 provides MPI/PROFIBUS DP (RS-422/RS-485), an Ethernet interface (10/100 Mbit/s), and USB 1.1 ports. These allow connection to SIMATIC S7 PLCs and other compatible controllers.

Is this panel compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the MP 370 is fully compatible with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. Ethernet-based communication with S7 PLCs using S7 protocol is also supported.

What is the supply voltage for the 6AV6446-3AA40-2AY3?

The panel operates on a 24 V DC supply voltage. Ensure the power supply is adequately rated, as the panel can consume up to 30 W.

Can the CompactFlash card be used for data logging and recipe storage?

Yes, the CompactFlash card slot supports storage of the runtime project, data logs, alarm archives, and recipe data. The card can be removed and read on a PC using a standard CompactFlash reader.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel power connector. Check that the supply current is sufficient. Inspect the panel for any visible damage to the power input terminals.

Ensure the 24 V DC supply is stable and within tolerance. If the supply is correct and the display remains blank, the internal power supply board or backlight inverter may be faulty and require replacement or professional repair.

Panel does not respond to touch input

Check whether the display is showing content correctly (backlight on, image visible). Attempt to navigate using any external USB mouse if connected. Determine if the issue is with the touch controller or the display itself.

Perform a touch screen calibration via the panel's Start Center or Control Panel settings. If calibration does not resolve the issue, the resistive touch screen overlay may be damaged and require replacement.

Cannot transfer project from WinCC flexible to the panel

Verify the transfer mode is active on the panel (accessible via the Start Center). Check that the correct communication interface and address are configured in WinCC flexible transfer settings. Test the cable or network connection independently.

Set the panel to transfer mode manually via the Start Center. Confirm IP address or MPI address settings match between the engineering PC and the panel. Replace the communication cable if faulty.

HMI loses connection to PLC during operation

Check the PROFIBUS DP or Ethernet cable connections and termination resistors on the bus. Verify the PLC is in RUN mode and the configured PLC address in the HMI project is correct. Monitor for intermittent cable faults.

Reseat all communication connectors. Replace damaged cables. Verify PROFIBUS termination is applied only at the two physical ends of the bus. Confirm PLC address and communication parameters in the WinCC flexible project match the actual PLC configuration.

Panel displays 'Runtime not started' or fails to load project after restart

Check the CompactFlash card is properly seated in the slot. Attempt to access the Start Center to verify if the runtime application is listed. Check available storage space on the CompactFlash card.

Re-seat the CompactFlash card. If the card is corrupted, re-transfer the project from WinCC flexible. If the panel repeatedly fails to start the runtime, perform a factory reset via the Start Center and re-transfer the project.

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