Siemens 6AV6446-1CA40-2BA5 SIMATIC MP 370

Name: Siemens 6AV6446-1CA40-2BA5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1CA40-2BA5
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1CA40-2BA5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1CA40-2BA5 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 12-inch touch-screen panel is part of the SIMATIC MP 370 series and operates as a high-performance human-machine interface capable of handling complex process visualization requirements. It is manufactured by Siemens and combines robust hardware with the WinCC flexible runtime environment.

The MP 370 (6AV6446-1CA40-2BA5) features a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports 256 colors. The panel is equipped with a resistive touch screen and includes a range of communication interfaces such as MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling seamless integration into existing Siemens automation networks. It provides 12 MB of user memory for project data and runs the WinCC flexible 2004 or later runtime software, supporting up to 500 process tags. The unit operates on 24 V DC and features a fanless design for reduced maintenance requirements.

The SIMATIC MP 370 is widely used in machine building, automotive manufacturing, food and beverage processing, and chemical industries where a reliable and feature-rich operator panel is required. Its large display area and multi-protocol communication capabilities make it suitable for supervisory control applications on complex machinery and production lines. The panel's compatibility with the broader Siemens S7 PLC family and STEP 7/WinCC flexible engineering tools makes it a practical choice for system integrators working within Siemens automation architectures.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Display Type	TFT LCD
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
User Memory	12 MB
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
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), IP20 (rear)
Mounting	Panel mounting
Certifications	CE, UL, cULus
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 or has been lost.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC address settings and communication parameters in WinCC flexible project. Ensure the PLC is in RUN mode.
Event ID: 10001: Tag read error. The HMI panel cannot read the value of a configured process tag from the PLC.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for correct data type and address allocation.
Event ID: 10002: 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. Verify the tag address and data type in the WinCC flexible configuration. Confirm the PLC is in a state that accepts write commands.
Event ID: 40000: Project download error. Transfer of the WinCC flexible project to the panel has failed or been interrupted.
Check the transfer cable or network connection between the engineering PC and the panel. Ensure the panel is in Transfer mode. Verify sufficient free memory on the panel before retrying the download.
Event ID: 20000: System memory low. Available runtime memory on the HMI panel is critically low, which may affect panel performance.
Reduce the number of simultaneously active screens or objects. Archive or delete unnecessary data records and alarm logs stored on the panel. Consider optimizing the WinCC flexible project to reduce memory usage.
Event ID: 50000: Alarm buffer overflow. The internal alarm buffer has reached its maximum capacity and older alarms are being overwritten.
Acknowledge and clear pending alarms. Configure alarm archiving to an external memory card or network path. Review alarm configuration to suppress non-critical or redundant alarms.
Event ID: 30000: Recipe data error. An error occurred during reading or writing of recipe data records.
Check the recipe configuration in WinCC flexible for correct tag assignments and data types. Verify that the memory card is properly inserted if recipes are stored externally. Re-transfer the project if recipe structure has been modified.

Frequently Asked Questions

What communication interfaces are available on the 6AV6446-1CA40-2BA5?

The MP 370 (6AV6446-1CA40-2BA5) supports MPI, PROFIBUS DP, Ethernet (TCP/IP via RJ45), and RS-422/485 serial interfaces, allowing connection to a wide range of Siemens S7 PLCs and third-party controllers.

Which engineering software is required to configure this panel?

The panel is configured using Siemens WinCC flexible 2004 or a later compatible version. Projects are created on a Windows-based engineering PC and transferred to the panel via Ethernet or MPI/PROFIBUS connection.

What is the operating voltage for the SIMATIC MP 370?

The panel operates on 24 V DC with a maximum power consumption of approximately 30 W. A stable, regulated 24 V DC power supply is required for reliable operation.

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

Yes, the MP 370 is fully compatible with Siemens S7-300 and S7-400 PLCs via MPI or PROFIBUS DP, and also supports S7-1200 and S7-1500 connectivity via Ethernet using appropriate WinCC flexible drivers.

What is the front panel protection rating of this HMI?

The front face of the MP 370 carries an IP65 protection rating, making it suitable for installation in control cabinet doors where it may be exposed to dust and water spray. The rear of the unit is rated IP20.

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 the correct polarity. Observe whether the status LED illuminates during startup.

Ensure the 24 V DC supply is within tolerance and correctly wired. If the supply is correct but the display remains blank, the internal backlight or power supply board may be faulty and the unit should be sent for repair or the backlight replaced.

Panel fails to establish communication with the PLC

Check the physical cable connections on the MPI, PROFIBUS, or Ethernet port. Verify the bus address configured on the panel matches the project settings and that no address conflicts exist on the network.

Replace or reseat the communication cable. Confirm termination resistors are correctly placed at both ends of the PROFIBUS segment. Re-download the WinCC flexible project with corrected communication parameters if necessary.

Touch screen does not respond accurately or at all

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 recalibration via the SIMATIC HMI Start Center. Clean the screen surface with a soft, dry cloth. If the touch screen remains unresponsive after recalibration, the touch overlay may need replacement.

WinCC flexible project fails to transfer to the panel

Verify the panel is set to Transfer mode via the Start Center. Check the Ethernet or MPI cable connection between the engineering PC and the panel. Confirm the IP address or MPI address settings match on both sides.

Restart the panel in Transfer mode and retry the download. If using Ethernet, ping the panel IP address to confirm network connectivity. Ensure the WinCC flexible version on the PC is compatible with the panel firmware version; update panel firmware if required.

Panel reboots unexpectedly during operation

Check the 24 V DC supply for voltage dips or instability under load. Review the system event log on the panel for recorded fault events prior to the reboot. Inspect the project for memory overload conditions.

Install a regulated, adequately rated 24 V DC power supply. Optimize the WinCC flexible project to reduce CPU and memory load. If reboots persist, perform a factory reset and re-download the project to rule out corrupted runtime data.

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