Siemens 6AV6446-1AA40-1BA5 SIMATIC MP 370

Name: Siemens 6AV6446-1AA40-1BA5 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-1AA40-1BA5
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-1AA40-1BA5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-1AA40-1BA5 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 panel features a 12-inch TFT display and operates as a high-performance human-machine interface capable of running WinCC flexible runtime software. It is part of Siemens' SIMATIC HMI panel range, which bridges the gap between standard operator panels and full PC-based systems.

The MP 370 (6AV6446-1AA40-1BA5) is equipped with a 12.1-inch TFT color display with a resolution of 800 x 600 pixels (SVGA), supporting up to 256 colors. It features a resistive touch screen interface and includes a MPI/PROFIBUS DP interface for direct integration with Siemens SIMATIC S7 PLCs, as well as a serial RS-232/RS-422/RS-485 interface for third-party controller connectivity. The panel runs on a Windows CE operating system and provides onboard flash memory for project storage, along with a CompactFlash card slot for additional memory expansion. It supports Ethernet connectivity for network integration and remote access.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical industries where a robust and versatile HMI solution is required. Its combination of touch operation, broad communication capabilities, and compatibility with the SIMATIC S7 controller family makes it suitable for complex visualization tasks on standalone machines and production lines. The panel's industrial-grade construction and wide operating temperature range allow reliable operation in harsh factory floor environments.

Technical Specifications

Display Size	12.1 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Display Type	TFT color LCD
Touch Technology	Resistive touch screen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI/PROFIBUS DP, RS-232/RS-422/RS-485, Ethernet (RJ45)
Memory	Onboard Flash + CompactFlash card slot
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 panel)
Mounting	Panel mounting
Certifications	CE, UL, cUL

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 DP cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both PLC and HMI panel.
Event ID: 10001: Connection to PLC interrupted during runtime. The HMI lost communication with the configured controller.
Inspect physical cabling for damage or loose connectors. Check bus termination and cable shielding. Verify PLC is in RUN mode and the network address is correct.
Event ID: 20000: Project download error. Transfer of the WinCC flexible project to the panel failed.
Ensure the transfer cable is correctly connected and the panel is in Transfer mode. Check that the PC and panel communication settings match. Retry the download.
Event ID: 40000: System memory low. Available runtime memory on the panel is insufficient for the loaded project.
Reduce the size of the HMI project (reduce images, scripts, or tag counts). Insert or replace the CompactFlash card. Restart the panel after project optimization.
Event ID: 50000: Tag update error. One or more process tags could not be read from or written to the PLC.
Verify the tag addresses in the WinCC flexible project match the actual PLC data block structure. Check PLC program for address conflicts.
Event ID: 60000: Recipe data error. A recipe record could not be read or written correctly.
Check CompactFlash card for sufficient free space and integrity. Re-export and re-import the recipe data. Replace the CompactFlash card if errors persist.
Event ID: 70000: Touchscreen calibration error. The touch input is misaligned or unresponsive.
Perform a touchscreen recalibration via the Control Panel in the Windows CE Start menu. If the problem persists, the touch overlay may require replacement.

Frequently Asked Questions

What PLC systems is the SIMATIC MP 370 (6AV6446-1AA40-1BA5) compatible with?

The MP 370 is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It also supports third-party controllers through its RS-232/RS-422/RS-485 serial interfaces and Ethernet connection.

What software is used to configure and program this HMI panel?

The panel is configured using Siemens WinCC flexible engineering software. Projects are created on a PC and then downloaded to the panel via MPI, PROFIBUS, Ethernet, or a serial transfer cable.

Does the MP 370 support Ethernet communication?

Yes, the 6AV6446-1AA40-1BA5 includes an Ethernet (RJ45) interface, enabling network integration, remote monitoring, and project transfer over a LAN.

What is the supply voltage for this panel?

The SIMATIC MP 370 operates on a 24 V DC supply voltage. Ensure the power supply is stable and within the specified tolerance range to avoid operational issues.

Can the CompactFlash card be used to store HMI projects and recipe data?

Yes, the CompactFlash card slot allows storage of HMI projects, recipe data, and log files. It also provides additional memory beyond the onboard flash memory of the panel.

Troubleshooting

Display remains blank after power on

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

Verify and restore the 24 V DC supply. If voltage is correct and the display remains blank, the backlight or internal power supply board may be faulty and require replacement.

Touchscreen does not respond or responds inaccurately

Determine whether the issue is a calibration problem or a hardware failure by attempting recalibration through the Windows CE Control Panel.

Recalibrate the touchscreen via Start > Control Panel > Stylus on the Windows CE desktop. If calibration does not resolve the issue, the resistive touch overlay may need to be replaced.

HMI cannot establish communication with the S7 PLC

Check MPI or PROFIBUS DP cable connections, bus termination resistors, and verify that the PLC address configured in the WinCC flexible project matches the actual PLC station address.

Correct any address mismatches in the project settings, ensure proper bus termination at both ends of the cable, and replace any damaged cables. Restart both the PLC and the HMI panel.

Project download from PC to panel fails

Confirm the panel is set to Transfer mode (accessible via the Start Center on the panel). Check that the communication interface settings on both the PC and panel match.

Set the panel to Transfer mode, match the interface settings (MPI address, baud rate, or IP address for Ethernet), and retry the download from WinCC flexible. Try an alternative transfer cable if the issue persists.

Panel freezes or restarts unexpectedly during operation

Check the supply voltage for instability or voltage dips. Review the WinCC flexible project for script errors, excessive tag polling rates, or memory overload conditions.

Stabilize the 24 V DC power supply, optimize the HMI project by reducing polling cycles and script complexity, and ensure the CompactFlash card is not full or corrupted. Update the panel firmware if an update is available.

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