Siemens 6AV6446-1AA41-1BA3 SIMATIC MP 370

Name: Siemens 6AV6446-1AA41-1BA3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA41-1BA3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-1AA41-1BA3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA41-1BA3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding visualization and operator control tasks in industrial automation environments. 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 human-machine interface in machine-level and process-level control applications.

The MP 370 (6AV6446-1AA41-1BA3) 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 runs on WinCC flexible runtime software and provides connectivity via MPI, PROFIBUS DP, and Ethernet interfaces, enabling integration with SIMATIC S7 PLCs and other controllers. The unit operates on a 24 V DC supply and features a fanless design with a CompactFlash card slot for project storage and data logging.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant automation. Its robust construction and broad communication capability make it suitable for applications requiring reliable visualization of process data, alarm management, and recipe handling. The panel's compatibility with WinCC flexible and STEP 7 engineering tools allows seamless integration into existing SIMATIC automation architectures.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (10/100 Mbit/s)
Memory	12 MB user memory; 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
Series/Product Family	SIMATIC HMI Multi Panel MP 370
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC or controller. Connection to the configured controller cannot be established.
Check MPI/PROFIBUS/Ethernet cabling and connector integrity. Verify the PLC address and communication parameters in the WinCC flexible project match the hardware configuration.
Event ID: 10001: Connection to the PLC was established but has been lost during operation.
Inspect cable connections and network topology. Check for electromagnetic interference on the communication bus. Verify PLC is in RUN mode and not faulted.
Event ID: 20000: Tag read error. The HMI panel cannot read the value of a configured tag from the PLC.
Verify the tag address in the WinCC flexible project is correct and matches the PLC data block or memory area. Ensure the PLC program has not been modified without updating the HMI project.
Event ID: 20001: Tag write error. The HMI panel cannot write a value to the configured PLC tag.
Check that the target PLC memory area is not write-protected. Confirm the tag address and data type are correctly configured in WinCC flexible.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the panel failed or was interrupted.
Ensure the panel is in Transfer mode before initiating download. Check the communication cable between the engineering PC and the panel. Verify sufficient free memory on the CompactFlash card.
Event ID: 50000: Runtime system error. The WinCC flexible runtime has encountered an internal fault and may have stopped.
Restart the panel. If the error persists, re-download the WinCC flexible project. Check for project configuration errors such as invalid scripts or unsupported functions.
Event ID: 70000: System memory low. Available memory for the runtime application is critically low.
Reduce the number of open screens or active data logs. Optimize the WinCC flexible project to reduce memory usage. Consider archiving or clearing historical data on the CompactFlash card.

Frequently Asked Questions

What PLC systems are compatible with the SIMATIC MP 370 (6AV6446-1AA41-1BA3)?

The MP 370 is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It also supports Ethernet-based communication with S7 controllers and can be configured for third-party controllers using WinCC flexible drivers.

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

The MP 370 is configured using Siemens WinCC flexible engineering software. The project is then transferred to the panel via MPI, PROFIBUS, Ethernet, or a direct serial connection from the engineering PC.

Does the 6AV6446-1AA41-1BA3 support touch screen operation?

Yes, this variant of the MP 370 features a resistive touch screen for operator input, in addition to function keys located around the display bezel.

What storage media does the MP 370 use for project data?

The MP 370 uses a CompactFlash (CF) card for storing the WinCC flexible runtime project, data logs, and recipe data. The CF card is accessible via a slot on the panel.

What is the supply voltage requirement for this panel?

The SIMATIC MP 370 operates on a 24 V DC supply voltage. Ensure the power supply can deliver sufficient current, with a maximum power consumption of approximately 30 W.

Troubleshooting

Display remains blank after power on

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

Verify and restore the 24 V DC supply. If voltage is correct but display remains off, the backlight or internal power board may be faulty and require replacement or professional repair.

Panel does not communicate with the S7 PLC via PROFIBUS or MPI

Confirm the bus address configured on the panel matches the project settings. Check the PROFIBUS/MPI cable for continuity and correct termination resistors at both ends of the bus.

Correct the bus address in the WinCC flexible project or on the panel's startup screen. Replace damaged cables and ensure bus termination is active only at the two physical ends of the network.

Touch screen does not respond or responds inaccurately

The touch screen may require recalibration, or the resistive touch surface may be damaged. Check for physical damage, contamination, or worn areas on the touch overlay.

Perform a touch screen recalibration through the panel's Control Panel settings in the operating system. If calibration does not resolve the issue, the touch screen overlay may need to be replaced.

WinCC flexible project fails to transfer to the panel

Confirm the panel is set to Transfer mode. Check the communication interface settings on both the engineering PC and the panel. Verify the CompactFlash card is inserted and has sufficient free space.

Switch the panel to Transfer mode via the Start Center. Ensure the correct communication channel is selected in WinCC flexible Transfer settings. Replace or reformat the CompactFlash card if storage errors are reported.

Panel reboots unexpectedly or freezes during operation

Check the supply voltage for stability and ripple. Inspect the CompactFlash card for errors. Review the WinCC flexible project for script errors or excessive CPU load caused by complex screens.

Stabilize the 24 V DC power supply and ensure adequate current capacity. Replace a faulty CompactFlash card. Simplify complex project screens and correct any script errors identified in the WinCC flexible project diagnostics.

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