Siemens 6AV6344-2AD24-0MF6 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD24-0MF6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD24-0MF6 is an Operator Panel (OP 177B) belonging to the SIMATIC HMI series, designed for machine-level visualization and operator control tasks. This unit is part of the OP 177B product family, which offers a compact panel format with a monochrome or color display suited for demanding industrial environments. It is engineered to integrate seamlessly within Siemens automation architectures, providing a reliable human-machine interface for process monitoring and control.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels and supports up to 256 colors. It is equipped with a resistive touch screen as well as function keys, providing flexible operator input options. Communication interfaces include PROFIBUS DP and MPI, enabling direct connection to Siemens S7-200, S7-300, and S7-400 PLCs. The panel operates on a 24 V DC supply and includes an integrated configuration memory, with project data stored on a CompactFlash card slot for easy project transfer and backup.

The OP 177B is widely deployed in machine building, automotive manufacturing, food and beverage processing, and packaging industries. Its combination of touch and key-based input makes it suitable for applications requiring both graphical visualization and dedicated function key control. The panel's robust construction and wide operating temperature range make it appropriate for installation in control cabinets and machine panels in environments with moderate levels of dust and humidity.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Type	STN color LCD
Display Colors	256 colors
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	PROFIBUS DP, MPI
Memory	CompactFlash card slot for project storage
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: Configuration error detected on startup — project data on CompactFlash card is missing or corrupted.
Re-transfer the project from SIMATIC WinCC flexible to the panel via the CompactFlash card or direct download connection.
Event ID: 20000: Communication error — connection to the configured PLC (MPI/PROFIBUS DP) has been lost or cannot be established.
Check MPI/PROFIBUS DP cable connections, verify bus address settings, and confirm the PLC is powered and in RUN mode.
Event ID: 40000: Tag read/write error — a configured tag cannot be read from or written to the connected controller.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program for address conflicts.
Event ID: 50000: System memory low — available runtime memory on the panel is insufficient to load the configured project.
Reduce project size by optimizing graphics and screen objects, or clear unused data from the CompactFlash card.
Event ID: 60000: Backup battery low or missing — the internal buffer battery voltage is below the required threshold.
Replace the internal buffer battery with the correct Siemens replacement type. Refer to the OP 177B operating instructions for battery replacement procedure.
Event ID: 70000: Operating system error — the panel firmware is corrupted or incompatible with the loaded project version.
Perform a firmware update using the Siemens ProSave tool or WinCC flexible, ensuring the firmware version is compatible with the project configuration.
Event ID: 80000: Printer communication error — the configured printer cannot be reached or is not responding.
Check printer cable connections and printer power status. Verify printer type and port settings in the WinCC flexible project configuration.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B (6AV6344-2AD24-0MF6)?

The OP 177B supports communication with Siemens S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It can also communicate with other controllers supported by WinCC flexible drivers.

What software is used to configure and program the OP 177B?

The OP 177B is configured using Siemens SIMATIC WinCC flexible software. Projects are transferred to the panel via a direct PC connection or by using a CompactFlash card.

What is the supply voltage for the 6AV6344-2AD24-0MF6?

The panel operates on a 24 V DC supply voltage. Ensure the power supply meets the current requirements and is within the specified tolerance range.

Does the OP 177B support both touch and key-based input?

Yes, the OP 177B features both a resistive touchscreen and dedicated function keys, allowing operators to interact with the HMI using either input method.

What is the front panel protection rating of the OP 177B?

The front panel of the OP 177B carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets when correctly installed in a panel cutout.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel power connector. Check for blown internal fuses and verify the power supply unit output is within tolerance.

Restore the 24 V DC supply to within specification. Replace any blown fuses with the correct rating. If the display backlight has failed, the panel may require backlight or display module replacement.

Panel displays 'No project' or fails to load the project on startup

Check whether a valid CompactFlash card is inserted and properly seated. Attempt to read the card on a PC to verify the project files are present and uncorrupted.

Re-transfer the WinCC flexible project to the CompactFlash card or directly to the panel. Ensure the project was compiled without errors before transfer and that the WinCC flexible version matches the panel firmware version.

Communication fault with PLC — tags show error or no value

Verify the MPI or PROFIBUS DP cable is connected and undamaged. Check bus termination resistors at both ends of the network. Confirm the panel bus address does not conflict with other devices.

Replace damaged cables, correct bus termination, and assign a unique bus address to the panel in the WinCC flexible project settings. Confirm the PLC is in RUN mode and the configured connection parameters match.

Touchscreen does not respond or registers incorrect touch positions

Check for physical damage or contamination on the touchscreen surface. Attempt to recalibrate the touchscreen through the panel's Control Panel settings in the operating system.

Clean the touchscreen surface with a soft, dry cloth. Perform a touchscreen calibration via the Siemens panel Control Panel. If calibration fails repeatedly, the touchscreen overlay may require replacement.

Panel repeatedly reboots or freezes during operation

Check the 24 V DC supply for voltage dips or ripple that may cause instability. Review the WinCC flexible project for script errors or excessive polling rates that could overload the panel CPU.

Stabilize the power supply and ensure adequate current capacity. Optimize the WinCC flexible project by reducing update cycles and simplifying scripts. If the issue persists, perform a firmware reinstallation using ProSave.

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