Siemens 6AV6344-2AC34-0CF6 OP 177B

€ 1.995,00

SKU: 6AV6344-2AC34-0CF6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AC34-0CF6 is an operator panel belonging to the SIMATIC HMI OP 177B series, manufactured by Siemens. It is a compact, panel-mounted human-machine interface designed for machine-level visualization and operator control tasks. This unit features a color display and supports both touch and key-based operation, making it a versatile solution for industrial control environments.

The OP 177B panel is equipped with a 5.7-inch STN color display with a resolution of 320 x 240 pixels (QVGA). It supports communication via MPI, PROFIBUS DP, and Ethernet interfaces, enabling integration with a wide range of Siemens SIMATIC S7 controllers as well as third-party systems. The panel runs on WinCC flexible runtime software and provides configurable function keys, a numeric keypad, and support for recipe management, alarm logging, and trend displays. It operates on a 24 V DC supply and is rated IP65 on the front face for protection against dust and water ingress.

The OP 177B is widely deployed in machine building, packaging, food and beverage processing, and general manufacturing automation. Its combination of key-based and touch input makes it suitable for environments where gloved operation is required or where touchscreen-only interfaces are impractical. The panel's compact form factor and broad communication support make it a practical choice for retrofitting existing control cabinets as well as new machine installations.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Type	STN color
Display Colors	256 colors
Touch Technology	Touch screen and membrane keypad (combined operation)
Input/Operating Voltage	24 V DC
Power Consumption	Max. 10 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
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 HMI OP 177B

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC or controller.
Check the communication cable and connector integrity. Verify MPI or PROFIBUS address settings on both the panel and the PLC. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to the configured PLC has been lost or cannot be established.
Verify network configuration parameters including baud rate and station address. Check physical wiring and termination resistors on the PROFIBUS network.
Event ID: 20000: Project download error — the configuration project could not be transferred to the panel.
Ensure the correct communication interface is selected in WinCC flexible. Verify the panel is in transfer mode and the PC connection settings match the panel interface.
Event ID: 40000: Internal device error or system fault detected on the HMI panel.
Perform a panel restart. If the fault persists, perform a factory reset and reload the project. Check for hardware damage or failed internal components.
Event ID: 50000: Memory error — insufficient memory available for project or runtime data.
Delete unused projects or data records from the panel memory. Optimize the WinCC flexible project to reduce memory usage.
Event ID: 60000: Configuration error — the loaded project is incompatible with the panel firmware version.
Update the panel firmware to the version required by the WinCC flexible project, or recompile the project using the firmware version installed on the panel.
Event ID: 70000: Alarm buffer overflow — the alarm log has reached its maximum capacity.
Archive or clear the alarm buffer. Increase the configured alarm buffer size in the WinCC flexible project if possible.

Frequently Asked Questions

What communication interfaces does the 6AV6344-2AC34-0CF6 support?

The OP 177B supports MPI, PROFIBUS DP, and Ethernet (RJ45) communication interfaces, allowing connection to SIMATIC S7-200, S7-300, and S7-400 PLCs as well as third-party controllers via appropriate drivers.

What software is used to configure this HMI panel?

The panel is configured using Siemens WinCC flexible software. The project is compiled on a PC and transferred to the panel via the available communication interfaces or a USB/serial connection.

What is the operating voltage for the 6AV6344-2AC34-0CF6?

The panel operates on a 24 V DC supply voltage.

Is the OP 177B compatible with SIMATIC S7-1200 or S7-1500 PLCs?

The OP 177B was designed primarily for use with S7-200, S7-300, and S7-400 PLCs using WinCC flexible. Compatibility with S7-1200 and S7-1500 via TIA Portal is limited; Siemens recommends newer HMI panels for those controller families.

What is the front panel protection rating of this unit?

The front face of the OP 177B is rated IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for installation in industrial panel doors.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel power connector. Check that the supply is within the specified tolerance. Inspect the power connector for loose or corroded contacts.

Correct the supply voltage if out of range. Reseat the power connector. If the display remains blank with confirmed correct supply voltage, the internal power supply board or backlight may have failed and the unit should be repaired or replaced.

Panel displays 'No connection to PLC' or communication errors at startup

Verify the MPI or PROFIBUS address configured in the WinCC flexible project matches the address set on the panel. Check the physical cable between the panel and the PLC for continuity and correct pinout.

Correct any address mismatches in the project or panel settings. Replace damaged cables. Ensure PROFIBUS termination resistors are correctly placed at both ends of the network segment.

Touchscreen does not respond or responds inaccurately

Check whether the touch area is physically damaged or contaminated. Attempt a touchscreen calibration from the panel's system settings menu.

Clean the touchscreen surface with a soft, dry cloth. Perform a touchscreen recalibration via the Control Panel in the panel's start center. If calibration does not resolve the issue, the touch foil or controller board may require replacement.

Project transfer from PC to panel fails

Confirm the panel is set to Transfer mode. Verify the communication interface selected in WinCC flexible matches the physical connection being used. Check that firewall or antivirus software is not blocking the transfer on the PC.

Switch the panel to Transfer mode via the start center. Match the interface settings in WinCC flexible to the actual connection (Ethernet IP address or MPI/PROFIBUS address). Disable interfering PC software temporarily during transfer.

Panel restarts repeatedly or enters a boot loop

A corrupted project file or failed firmware update can cause continuous restarts. Attempt to access the panel's start center during boot by pressing the appropriate key combination.

Boot into the start center and perform a panel reset to factory defaults. Re-transfer a valid, compiled WinCC flexible project to the panel. If the boot loop continues, the panel firmware may need to be reinstalled using the Siemens ProSave tool.

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