Siemens 6AV6446-6CA40-0BY5 SIMATIC MP 370

Name: Siemens 6AV6446-6CA40-0BY5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-6CA40-0BY5
Price: 2995.00 EUR
Availability: InStock

€ 2.995,00

Condition

Clear

SKU: 6AV6446-6CA40-0BY5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-6CA40-0BY5 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and plant-level visualization tasks. This panel is part of the SIMATIC MP 370 series, which offers a 15-inch TFT color display and is intended for use as a high-performance operator interface in industrial automation environments. It is manufactured by Siemens and represents a robust, panel-PC-class HMI solution within the SIMATIC product range.

The MP 370 features a 15-inch TFT display with a resolution of 1024 x 768 pixels and 64,000 colors, providing clear and detailed process visualization. It supports touch screen operation and is equipped with communication interfaces including PROFIBUS DP and MPI, enabling direct integration with Siemens S7 PLCs and other SIMATIC controllers. The unit runs WinCC flexible runtime software and offers substantial project memory for complex visualization applications. The panel is built to industrial standards with an IP65-rated front face, ensuring protection against dust and water ingress in harsh production environments.

The SIMATIC MP 370 is widely used in the automotive, food and beverage, chemical, and machine building industries where a large, high-resolution display and reliable PLC connectivity are required. It is particularly suited for applications involving complex process visualization, recipe management, alarm logging, and trend displays at machine or line level. Its robust construction and compatibility with the SIMATIC automation ecosystem make it a practical choice for both OEM machine builders and end-user plant operators.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 pixels (XGA)
Display Colors	64,000 colors
Display Type	TFT LCD
Touch Technology	Resistive touch screen
Operating Voltage	24 V DC
Power Consumption	Approx. 60 W
Communication Interface	PROFIBUS DP / MPI, Ethernet (10/100 Mbit/s), RS-422/485
Operating System	Windows CE
Software	WinCC flexible Runtime
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10 % to 90 % (non-condensing)
Mounting	Panel mounting
Certifications	CE, UL, cULus

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 PROFIBUS/MPI cable connections and termination resistors. Verify the PLC address and baud rate settings match the HMI project configuration. Ensure the PLC is in RUN mode.
Event ID: 10001: Tag read error. The HMI panel cannot read a configured tag from the PLC.
Verify the tag address exists in the PLC program and that the data block or memory area is accessible. Check for address conflicts in the HMI project.
Event ID: 10002: Tag write error. The HMI panel cannot write a value to the configured PLC tag.
Confirm the PLC is not in a write-protected state. Check that the target address is writable and that the data type matches the configured tag in WinCC flexible.
Event ID: 40000: System memory low. Available runtime memory on the HMI panel is critically low.
Reduce the number of active screens or loaded resources. Archive or delete old alarm logs and data records. Consider reducing project complexity.
Event ID: 50000: Project download error. Transfer of the WinCC flexible project to the panel failed.
Check the transfer cable or Ethernet connection between the engineering PC and the panel. Ensure the panel is in Transfer mode and that the correct interface is selected in WinCC flexible.
Event ID: 20000: Alarm buffer overflow. The number of pending alarms has exceeded the buffer capacity.
Acknowledge and clear existing alarms. Review alarm configuration to reduce unnecessary alarm triggers. Increase the alarm buffer size in the WinCC flexible project settings if possible.
Event ID: 60000: Backup/restore error. A project backup or restore operation on the panel has failed.
Ensure sufficient free storage space on the target medium (CF card or USB). Verify the integrity of the backup file and retry the operation. Check that the storage medium is properly inserted and recognized.

Frequently Asked Questions

Which PLC families is the SIMATIC MP 370 compatible with?

The MP 370 is compatible with Siemens SIMATIC S7-300, S7-400, and S7-200 PLCs via MPI or PROFIBUS DP interfaces. It can also communicate with third-party controllers via serial interfaces or Ethernet using appropriate drivers in WinCC flexible.

What software is used to configure and program the MP 370?

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

What is the input voltage requirement for the 6AV6446-6CA40-0BY5?

The panel requires a 24 V DC power supply. It is important to ensure the supply is stable and within the specified tolerance range to avoid panel faults or unexpected restarts.

Does the MP 370 support Ethernet communication?

Yes, the MP 370 includes an integrated Ethernet interface (10/100 Mbit/s) which can be used for project transfer, remote access, and communication with controllers that support Industrial Ethernet or TCP/IP-based protocols.

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

The front face of the MP 370 is rated IP65, providing full protection against dust ingress and protection against low-pressure water jets, making it suitable for installation in industrial control cabinet doors.

Troubleshooting

Display remains blank after power is applied

Check that 24 V DC is present at the power supply terminals of the panel. Measure voltage at the connector to confirm supply integrity. Inspect the internal fuse if accessible.

Ensure the 24 V DC supply is within tolerance and correctly wired. If the supply is confirmed good but the display remains off, the internal power supply board or backlight inverter may be faulty and require replacement or professional repair.

Touch screen does not respond or responds inaccurately

Determine whether the issue is a complete lack of response or positional inaccuracy. A miscalibrated touch screen will respond but register incorrect coordinates, while a hardware fault will result in no response at all.

Perform a touch screen recalibration through the panel's Control Panel settings in Windows CE. If recalibration does not resolve the issue, the touch screen overlay or controller board may need to be replaced.

HMI panel cannot establish communication with the PLC

Verify the physical cable connections on the MPI or PROFIBUS port. Check that the bus address and baud rate configured in the HMI project match the PLC settings. Use a PROFIBUS diagnostic tool to check bus integrity.

Correct any address or baud rate mismatches in the WinCC flexible project and reload it to the panel. Replace the communication cable if it is damaged. Ensure bus termination resistors are correctly placed at both ends of the PROFIBUS segment.

Panel repeatedly restarts or crashes during operation

Check the 24 V DC supply for voltage drops or ripple, which can cause instability. Review the system event log on the panel for error codes that may indicate the cause of the restart.

Stabilize the power supply by using a dedicated 24 V DC source with adequate current capacity. If the restarts persist, the issue may be related to corrupted project data or a failing internal component, requiring a project reload or hardware repair.

WinCC flexible project cannot be transferred to the panel

Confirm the panel is set to Transfer mode via the Start Center or Control Panel. Verify the correct transfer interface (Ethernet or serial) is selected in both the panel settings and the WinCC flexible transfer dialog.

Switch the panel to Transfer mode manually if it does not enter it automatically. Ensure the PC and panel are on the same network subnet if using Ethernet transfer. Check firewall settings on the engineering PC that may be blocking the transfer connection.

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