Siemens 6AV6446-1CA40-0BB5 SIMATIC MP 370

Name: Siemens 6AV6446-1CA40-0BB5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1CA40-0BB5
Price: 2995.00 EUR
Availability: InStock

€ 2.995,00

Condition

Clear

SKU: 6AV6446-1CA40-0BB5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1CA40-0BB5 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization applications. This unit features a 15-inch TFT color display and operates as a high-performance operator panel within Siemens' WinCC flexible runtime environment. It is part of the SIMATIC MP 370 series, which bridges the gap between panel-based HMI and PC-based SCADA systems.

The MP 370 6AV6446-1CA40-0BB5 is equipped with a resistive touch screen and supports multiple communication interfaces including PROFIBUS DP and MPI, enabling direct integration with SIMATIC S7 PLCs. The panel runs on a Windows CE operating system and supports WinCC flexible runtime for project execution. It provides onboard memory for project storage and supports external memory cards for data logging and recipe management. The unit operates on 24 V DC supply and is built to industrial standards with an IP65 front panel protection rating.

The SIMATIC MP 370 is widely deployed in manufacturing automation, machine tool control, packaging machinery, and process plant environments. Its large display area and touch interface make it suitable for complex HMI applications requiring detailed process visualization, alarm management, and trend displays. The panel is commonly found in automotive production lines, food and beverage processing plants, and chemical industry installations where robust and reliable operator interfaces are required.

Technical Specifications

Display Size	15 inch
Display Type	TFT color LCD
Display Colors	256 colors
Touch Technology	Resistive touch screen
Operating Voltage	24 V DC
Voltage Range	19.2 – 28.8 V DC
IP Protection Rating (Front)	IP65
IP Protection Rating (Rear)	IP20
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10 % to 90 % (non-condensing)
Communication Interface	PROFIBUS DP, MPI, RS-422/485
Operating System	Windows CE
Series/Product Family	SIMATIC MP 370
Mounting	Panel mounting
Certifications	CE, UL, cUL

Common Error Codes & System Events

Event ID: 1000: Project loading error – the HMI project could not be loaded from memory.
Verify project integrity in WinCC flexible and re-transfer the project to the panel via Ethernet or serial connection.
Event ID: 1003: Communication connection to PLC lost or not established.
Check PROFIBUS/MPI cable connections, verify station address settings, and confirm PLC is powered and communicating.
Event ID: 10000: Tag read error – a configured tag could not be read from the connected controller.
Verify the tag address in the WinCC flexible project matches the PLC data block or memory area. Check PLC program for correct data structure.
Event ID: 10001: Tag write error – a value could not be written to the PLC tag.
Check write permissions for the tag in the WinCC flexible configuration and confirm the PLC is not in a protected or read-only state.
Event ID: 20000: Recipe data error – recipe record could not be read or written.
Check the recipe configuration in WinCC flexible, verify memory card is properly inserted and not write-protected, and re-transfer the project if necessary.
Event ID: 40000: Alarm buffer overflow – the alarm buffer has reached its maximum capacity.
Acknowledge and clear pending alarms. Review alarm configuration to reduce alarm frequency or increase buffer size in WinCC flexible project settings.
Event ID: 70010: System memory low – available runtime memory is critically low.
Reduce the number of active screens, limit data logging frequency, and review project complexity. Consider archiving historical data to an external memory card.
Event ID: 2521: License missing or invalid for WinCC flexible runtime.
Verify that a valid WinCC flexible runtime license is installed on the panel. Transfer the correct license using the Siemens Automation License Manager.

Frequently Asked Questions

What communication interfaces does the 6AV6446-1CA40-0BB5 support?

The MP 370 supports PROFIBUS DP, MPI, and RS-422/485 serial communication, allowing direct connection to SIMATIC S7-300 and S7-400 PLCs as well as third-party controllers.

What software is required to program and configure this panel?

The panel is configured using Siemens WinCC flexible engineering software. The compiled project is then transferred to the panel via a serial or PROFIBUS connection.

What is the supply voltage for the 6AV6446-1CA40-0BB5?

The panel requires a 24 V DC supply with an operating range of 19.2 V DC to 28.8 V DC.

Is the front panel of the MP 370 protected against dust and water ingress?

Yes, the front panel carries an IP65 protection rating, making it suitable for installation in environments where dust and water spray may be present.

Can this panel be used as a replacement for other MP 370 variants?

The 6AV6446-1CA40-0BB5 is a specific 15-inch touch variant of the MP 370 series. Compatibility with existing projects depends on the WinCC flexible project configuration and the communication interface used; verify the project settings before substitution.

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 that the voltage is within the 19.2–28.8 V DC range. Inspect the internal fuse if accessible.

Correct the supply voltage if out of range. If voltage is correct and display remains blank, the backlight inverter or internal power supply board may be faulty and requires replacement.

Touchscreen does not respond or responds inaccurately

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

Perform a touch screen recalibration via Start > Settings > Control Panel > Touch on the Windows CE interface. If calibration does not resolve the issue, the touch overlay may need to be replaced.

Panel fails to communicate with the S7 PLC via PROFIBUS or MPI

Verify the PROFIBUS/MPI cable is correctly wired and terminated. Check the station address configured on the panel matches the WinCC flexible project settings and that no address conflicts exist on the bus.

Correct any address conflicts, ensure proper bus termination resistors are active at both ends of the cable, and re-download the project if communication parameters were changed.

Project transfer from engineering PC fails or times out

Check the physical connection between the PC and the panel (serial or PROFIBUS). Verify the correct COM port and transfer settings are selected in WinCC flexible. Confirm the panel is in transfer mode.

Set the panel to transfer mode via the Loader screen, verify PC communication port settings match the panel configuration, and retry the transfer. Replace the transfer cable if the connection is intermittent.

Panel reboots unexpectedly or freezes during operation

Check the supply voltage for ripple or voltage drops under load. Review the WinCC flexible project for excessive tag polling rates or memory-intensive scripts that may overload the panel CPU.

Stabilize the power supply and add filtering if necessary. Optimize the WinCC flexible project by reducing update cycles and simplifying scripts. If the issue persists, perform a firmware update or restore the panel to factory settings.

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