Siemens 6AV6446-1AA40-2AB3 SIMATIC MP 370

Name: Siemens 6AV6446-1AA40-2AB3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA40-2AB3
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1AA40-2AB3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-2AB3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI product family from Siemens. It is a high-performance operator panel designed for demanding visualization and control tasks in industrial automation environments. The MP 370 series offers a large display format and robust construction suitable for panel mounting in control cabinets and machinery.

The 6AV6446-1AA40-2AB3 variant features a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch screen operation. It runs on the WinCC flexible runtime environment and is equipped with communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling integration with SIMATIC S7 PLCs and other controllers. The panel includes onboard flash memory for project storage and supports USB ports for peripheral connectivity and data transfer.

The SIMATIC MP 370 is widely used in manufacturing, process automation, automotive production, and machine tool industries where a large, reliable HMI interface is required. Its compatibility with SIMATIC S7-300 and S7-400 PLCs, combined with its multi-protocol communication capability, makes it suitable for complex SCADA-level visualization tasks on the machine level. The panel's robust industrial design and wide operating temperature range allow deployment in harsh factory floor environments.

Technical Specifications

Display Size	12 inch
Display Type	TFT Color
Display Resolution	800 x 600 pixels (SVGA)
Touch Technology	Resistive Touch Screen
Input Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), USB
Operating System	Windows CE
Runtime Software	WinCC flexible Runtime
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, cUL
Series/Product Family	SIMATIC MP 370

Common Error Codes & System Events

Event ID: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established.
Check MPI/PROFIBUS or Ethernet cable connections. Verify PLC address settings and communication parameters in the WinCC flexible project match the controller configuration.
Event ID: 10001: Connection to PLC interrupted during operation. The HMI lost communication with the configured controller.
Inspect physical cabling and connectors. Check PLC operating state and ensure the network address and baud rate settings are consistent on both devices.
Event ID: 20000: Tag read error. The HMI panel cannot read a configured process tag from the PLC.
Verify the tag address exists in the PLC program and that the data type matches the HMI tag configuration. Check for PLC program changes that may have altered the tag structure.
Event ID: 20001: Tag write error. A write operation to a PLC tag failed.
Confirm the PLC is in RUN mode and the target data block or memory area is not write-protected. Check tag address and data type configuration in WinCC flexible.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the panel was unsuccessful.
Ensure the panel is in Transfer mode before initiating download. Check the communication interface settings (Ethernet or MPI) on both the engineering PC and the panel. Verify no firewall is blocking the connection.
Event ID: 50000: Internal flash memory error. The panel detected a fault in the onboard project storage memory.
Attempt to re-download the project to the panel. If the error persists, perform a factory reset and re-transfer the project. Replace the panel if the flash memory is confirmed defective.
Event ID: 60000: System startup error. The panel failed to complete its boot sequence correctly.
Cycle power to the panel. If the problem persists, perform a factory reset using the panel's loader menu. Re-download the WinCC flexible project after reset.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC MP 370 (6AV6446-1AA40-2AB3)?

The MP 370 is compatible with SIMATIC S7-300, S7-400, and S7-200 PLCs via MPI or PROFIBUS DP interfaces. Ethernet-based communication with S7 controllers is also supported using the integrated TCP/IP interface.

What software is required to program and configure this HMI panel?

The panel is configured using Siemens WinCC flexible engineering software. The project is then downloaded to the panel via Ethernet, MPI, or USB connection.

What is the supply voltage for the 6AV6446-1AA40-2AB3?

The panel operates on 24 V DC supply voltage, which is the standard supply for SIMATIC HMI panels in this series.

Does the MP 370 support third-party PLC communication?

Yes, the MP 370 supports communication with third-party controllers via configurable drivers available in WinCC flexible, including Modbus and other serial protocols depending on the interface used.

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

The front panel of the MP 370 achieves IP65 protection, making it resistant to dust ingress and low-pressure water jets, suitable for industrial panel-mounting applications.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for blown internal fuses. Observe whether the panel emits any startup sounds or LED activity.

Ensure the 24 V DC supply is within tolerance. Replace any blown fuses. If the backlight is faulty but the panel otherwise boots, the backlight inverter or LCD assembly may need replacement.

HMI panel shows 'No connection to PLC' message during operation

Check the physical MPI, PROFIBUS, or Ethernet cable between the panel and PLC. Verify the PLC is powered and in RUN mode. Confirm the communication parameters (address, baud rate, subnet) in the WinCC flexible project match the PLC settings.

Replace or reseat the communication cable. Correct any mismatched address or baud rate settings in the WinCC flexible project and re-download. If using Ethernet, verify IP address configuration on both devices.

Touch screen does not respond or responds inaccurately

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

Perform a touch screen recalibration. Clean the touch surface with a soft, dry cloth. If calibration does not resolve the issue, the touch screen overlay may require replacement.

Panel fails to enter Transfer mode for project download

Check that the correct transfer channel (Ethernet or MPI) is selected in the panel's loader Transfer Settings menu. Verify the engineering PC and panel are on the same network or MPI segment.

Access the loader menu on startup by pressing the appropriate key during boot. Set the correct transfer channel and address. Disable any PC firewall temporarily to rule out connectivity issues during download.

Project runs but process values are not updating on screen

Check the tag connections in WinCC flexible for correct PLC addresses. Verify the PLC program is writing to the expected memory areas. Monitor communication status in the HMI diagnostics screen.

Correct any incorrect tag addresses in the WinCC flexible project and re-download. Ensure the PLC program is actively updating the relevant data blocks or memory areas. Check for PLC program faults that may have halted execution.

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