Siemens 6AV6446-7BA41-0BY4 SIMATIC MP 377

Name: Siemens 6AV6446-7BA41-0BY4 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-7BA41-0BY4
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-7BA41-0BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-7BA41-0BY4 is a Multi Panel belonging to the SIMATIC MP 377 series, part of Siemens' SIMATIC HMI product line. This unit features a 15-inch TFT display and is designed for demanding visualization and operator control tasks in industrial automation environments. It runs on the Windows CE operating system and is configured and operated using Siemens WinCC flexible or TIA Portal software.

The MP 377 15" Touch features a high-resolution 1024 x 768 (XGA) TFT display with 64,000 colors and a resistive touchscreen interface. It is equipped with 12 MB user memory for project data and supports multiple communication interfaces including PROFIBUS DP, PROFINET (Ethernet), USB, and a serial RS-422/RS-485 interface. The panel operates on 24 V DC and is rated to IP65 on the front face, making it suitable for panel-mount installations in industrial enclosures.

The SIMATIC MP 377 is widely used in manufacturing, process automation, machine building, and plant engineering applications. Its large display area and multi-protocol communication capability make it suitable for complex visualization tasks on production lines, packaging machinery, and process control systems. The panel's robust construction and IP65 front protection allow deployment in environments with dust and water splash exposure.

Technical Specifications

Display Size	15 inch
Display Resolution	1024 x 768 px (XGA)
Display Colors	64,000 colors
Display Type	TFT LCD
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 40 W
User Memory	12 MB
Operating System	Windows CE 5.0
Communication Interface	PROFIBUS DP, PROFINET (Ethernet RJ45), USB, RS-422/RS-485
IP/Protection Rating	IP65 (front), IP20 (rear)
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
Series/Product Family	SIMATIC MP 377

Common Error Codes & System Events

Event ID: 1000: Configuration error detected during project download or startup. The project data may be incompatible with the panel firmware version.
Verify that the WinCC flexible or TIA Portal project version matches the panel firmware. Re-download the project after updating firmware if necessary.
Event ID: 1003: Communication connection to the PLC has been lost or cannot be established.
Check PROFIBUS or PROFINET cabling and connector integrity. Verify PLC address settings and ensure the PLC is in RUN mode. Check network configuration in the HMI project.
Event ID: 1004: Tag read/write error. The HMI cannot read from or write to a configured PLC tag.
Verify the PLC tag address and data type in the HMI project configuration. Ensure the PLC program contains the referenced data block or address.
Event ID: 1005: License missing or invalid for a configured function or runtime feature.
Check installed licenses on the panel using the Control Panel. Transfer the correct license using the Siemens Automation License Manager.
Event ID: 1009: System memory low. Available RAM for the runtime application is critically low.
Reduce the complexity of the HMI project, limit the number of simultaneously active screens, or reduce the number of logged tags and alarms.
Event ID: 1010: Flash memory write error. Data could not be written to the internal flash storage.
Check available flash memory space. Delete unnecessary files from the panel storage. If the error persists, the internal flash memory may require replacement or the panel may need servicing.
Event ID: 1040: Alarm buffer overflow. The number of pending alarms has exceeded the configured buffer size.
Acknowledge and clear existing alarms. Increase the alarm buffer size in the WinCC flexible or TIA Portal project configuration if overflow recurs frequently.

Frequently Asked Questions

What software is used to configure the SIMATIC MP 377 15" Touch?

The MP 377 can be configured using Siemens WinCC flexible 2008 or later, or Siemens TIA Portal with the WinCC Runtime Advanced option. The project is transferred to the panel via Ethernet, USB, or PROFIBUS.

What communication protocols does the 6AV6446-7BA41-0BY4 support?

The panel supports PROFIBUS DP, PROFINET via Ethernet (RJ45), USB host and device ports, and a serial RS-422/RS-485 interface. This allows connectivity to a wide range of Siemens and third-party PLCs.

Is the MP 377 compatible with Siemens S7-300 and S7-400 PLCs?

Yes, the MP 377 is fully compatible with Siemens S7-300 and S7-400 PLCs via PROFIBUS DP or PROFINET. It also supports connectivity to S7-1200 and S7-1500 series PLCs via PROFINET.

What is the front panel protection rating of the 6AV6446-7BA41-0BY4?

The front face of the panel is rated IP65, providing protection against dust ingress and low-pressure water jets. The rear of the unit is rated IP20.

Can the MP 377 operate on 110 V or 230 V AC power?

No, the MP 377 requires a 24 V DC power supply. An external 24 V DC power supply unit must be provided, as the panel does not have an integrated AC power supply.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check that the supply is within the specified range (typically 19.2 V to 28.8 V DC). Inspect the internal fuse if accessible.

Correct any power supply issues and ensure stable 24 V DC is present. If the supply is correct and the display remains blank, the backlight inverter or the display unit itself may be faulty and require replacement.

Touchscreen does not respond or responds inaccurately

Determine whether the issue is a complete lack of response or positional inaccuracy. Access the Control Panel via an external USB mouse to check if the operating system is running normally. Check for physical damage or contamination on the touch surface.

Perform a touchscreen recalibration from the Control Panel under the Siemens HMI settings. Clean the touch surface with a soft cloth. If recalibration does not resolve the issue, the resistive touch overlay may require replacement.

HMI cannot establish communication with the PLC

Verify the PROFIBUS or Ethernet cable connections and check for link activity LEDs on the Ethernet port. Confirm the IP address or PROFIBUS address configured in the HMI project matches the physical network settings on the panel.

Correct the network address settings via the Control Panel on the panel. Replace damaged cables or connectors. Ensure the PLC is powered and in RUN mode. Re-download the HMI project if configuration changes were made.

Panel repeatedly restarts or crashes during runtime

Check the project for memory overload conditions. Review the system event log accessible through the Control Panel for recurring Event IDs. Verify that the firmware version is compatible with the loaded project version.

Update the panel firmware to the latest compatible version using a USB stick or Ethernet transfer. Simplify the HMI project to reduce memory usage. If the issue persists, perform a factory reset and re-transfer the project.

Project download fails or transfer is interrupted

Check the USB or Ethernet connection between the engineering PC and the panel. Verify that the panel is in Transfer mode, accessible from the Start Center on the panel. Confirm that firewall or antivirus software on the PC is not blocking the transfer.

Switch the panel to Transfer mode manually via the Start Center. Disable any firewall or security software temporarily during transfer. Use a direct Ethernet connection rather than a network switch if transfer errors persist. Ensure the WinCC flexible or TIA Portal version matches the panel firmware.

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