Siemens 6AV6446-2AA45-2BY4 SIMATIC MP 377

Name: Siemens 6AV6446-2AA45-2BY4 SIMATIC MP 377
Brand: Siemens
SKU: 6AV6446-2AA45-2BY4
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-2AA45-2BY4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-2AA45-2BY4 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 machine-level and process visualization tasks. It operates as a standalone HMI panel capable of running WinCC flexible runtime applications.

The MP 377 15" Touch features a high-resolution 1024 x 768 pixel XGA TFT display with 64,000 colors and resistive touch screen technology. It is powered by a 24 V DC supply and includes multiple communication interfaces such as PROFIBUS DP, PROFINET/Ethernet (RJ45), USB ports, and a serial RS-422/485 interface. The panel is equipped with 12 MB user memory for applications and 64 MB RAM, and runs on a Windows CE 5.0 operating system, enabling compatibility with WinCC flexible 2008 and higher.

The SIMATIC MP 377 is widely used in manufacturing automation, machine building, and process industries including automotive, food and beverage, and chemical processing. Its large touch display and robust communication capabilities make it suitable for complex SCADA-level visualization at the machine or cell level, particularly in environments requiring integration with Siemens S7-300 and S7-400 PLC families.

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 touch screen
Input/Operating Voltage	24 V DC (19.2 V – 28.8 V)
Power Consumption	Approx. 40 W
Communication Interface	PROFIBUS DP, PROFINET/Ethernet (RJ45), RS-422/485, USB 2.0
User Memory	12 MB
RAM	64 MB
Operating System	Windows CE 5.0
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
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 or Ethernet cable connections and termination resistors. Verify PLC is powered and running. Confirm network address settings in WinCC flexible project match the physical configuration.
Event ID: 10001: Connection to PLC interrupted during runtime. Tag values are no longer being updated.
Inspect communication cable integrity and connector seating. Verify PLC program is in RUN mode. Restart the HMI runtime and re-establish the connection.
Event ID: 20000: License for WinCC flexible runtime is missing or invalid on the panel.
Transfer a valid WinCC flexible runtime license to the panel using the Automation License Manager. Ensure the license matches the runtime version installed.
Event ID: 40000: Project download failed. The project file could not be transferred to the panel successfully.
Check USB or Ethernet transfer cable. Ensure the WinCC flexible project version is compatible with the panel firmware. Retry the transfer after restarting the panel in transfer mode.
Event ID: 70010: Internal panel error or system fault detected. The operating system has encountered an unexpected condition.
Perform a panel restart. If the fault persists, perform a factory reset via the Control Panel and re-download the HMI project. Check for firmware updates.
Event ID: 50000: Data backup or recipe transfer error. Read/write operation to external storage (USB) failed.
Check that the USB storage device is properly inserted and formatted as FAT32. Verify sufficient free space is available. Replace the USB device if the error persists.
Event ID: 30000: Screen saver or display backlight fault. The display has not responded to touch input or backlight control signal.
Check the backlight settings in the Control Panel. If the backlight has failed, the display assembly or inverter board may require replacement.

Frequently Asked Questions

Which WinCC flexible version is compatible with the 6AV6446-2AA45-2BY4?

The SIMATIC MP 377 15" Touch is compatible with WinCC flexible 2008 and later versions. The project must be configured for the MP 377 15" Touch panel type.

What communication interfaces are available on this panel?

The panel provides PROFIBUS DP (RS-485), PROFINET via RJ45 Ethernet, one RS-422/485 serial interface, and multiple USB 2.0 ports for peripherals and data transfer.

Which Siemens PLCs are compatible with this HMI panel?

The MP 377 is compatible with Siemens S7-200, S7-300, S7-400, and WinAC controllers via PROFIBUS or PROFINET. It also supports communication with third-party controllers using standard protocols such as Modbus TCP.

What is the operating voltage for this panel?

The panel operates on 24 V DC with an allowable range of 19.2 V to 28.8 V. A regulated DC power supply is required.

Can this panel be used outdoors or in harsh environments?

The front face of the panel carries an IP65 rating, making it suitable for indoor industrial environments with protection against dust and water jets. It is not rated for outdoor use without additional enclosure protection.

Troubleshooting

Display remains blank after power on

Measure 24 V DC supply voltage at the power connector. Check that the voltage is within the 19.2 V to 28.8 V range. Inspect the internal fuse and backlight inverter.

Restore correct supply voltage if out of range. If voltage is correct and display remains blank, the backlight or inverter board may have failed and the display assembly should be replaced or repaired.

Touch screen does not respond or registers incorrect touch positions

Check for physical damage or contamination on the touch surface. Verify the touch calibration settings in the Windows CE Control Panel.

Clean the touch surface with a soft, dry cloth. Recalibrate the touch screen via Start > Control Panel > Touch on the Windows CE interface. If calibration fails repeatedly, the resistive touch overlay may require replacement.

Panel fails to establish communication with S7 PLC via PROFIBUS

Verify PROFIBUS cable wiring, termination resistors at both ends of the bus, and the bus address configured in the HMI project. Check that the PLC PROFIBUS address matches the project configuration.

Correct any wiring faults and ensure termination resistors are active only at the two physical ends of the PROFIBUS segment. Update the HMI project address settings in WinCC flexible and re-download the project.

Project download from PC to panel fails or times out

Check the transfer connection type (USB or Ethernet). Ensure the panel is in Transfer mode (accessible via the Start Center or by pressing the Transfer button). Verify firewall settings on the PC are not blocking the connection.

Switch the panel to Transfer mode manually via the Start Center. Use a direct Ethernet connection with a crossover cable or USB transfer cable. Disable PC firewall temporarily during transfer and retry.

Panel reboots unexpectedly or freezes during runtime

Check the supply voltage for ripple or voltage drops under load. Review the WinCC flexible project for script errors or excessive tag polling rates that may overload the CPU.

Ensure a stable, regulated 24 V DC power supply is used. Optimize the WinCC flexible project by reducing update cycles for non-critical tags and checking scripts for infinite loops. Update the panel firmware to the latest version if available.

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