Siemens 6AV6344-2AD14-0CF6 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD14-0CF6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD14-0CF6 is an OP 177B operator panel belonging to the SIMATIC HMI family, designed for machine-level human-machine interface applications. This unit provides a monochrome or color display with touch and key-based operation, serving as a compact and robust interface for industrial control systems. It is part of Siemens' mid-range HMI portfolio, positioned between basic text panels and full-featured PC-based systems.

The OP 177B features a 5.7-inch STN display and supports both MPI/PROFIBUS DP and Ethernet communication interfaces, enabling flexible integration into SIMATIC S7 environments. It is configured using WinCC flexible engineering software and supports recipe management, trend displays, alarm logging, and user administration functions. The unit operates on 24 V DC supply and is built to IP65 protection rating on the front panel, making it suitable for demanding industrial environments.

The OP 177B is widely deployed in manufacturing, process automation, and machine building applications where a compact, reliable operator interface is required. It is commonly found on packaging machinery, conveyor systems, injection molding machines, and general-purpose industrial equipment. Its compatibility with the SIMATIC S7-300 and S7-400 controller families makes it a standard choice for Siemens-based automation architectures.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Display Resolution	320 x 240 pixels (QVGA)
Touch Technology	Resistive touchscreen with membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 12 W
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485, 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: Configuration error detected during startup; the project loaded on the device is incompatible or corrupted.
Re-transfer the project using WinCC flexible. Verify the project was compiled without errors before transfer.
Event ID: 20000: Communication error with the configured PLC controller; connection to the SIMATIC S7 controller has been lost.
Check MPI/PROFIBUS DP or Ethernet cabling and termination resistors. Verify PLC address settings match the HMI project configuration.
Event ID: 40000: Operating system error; the device firmware or OS has encountered an internal fault.
Perform a device reset. If the error persists, update the firmware using ProSave or WinCC flexible.
Event ID: 50000: Memory error; insufficient memory available to load or run the configured project.
Reduce project size, optimize graphics and scripts, or clear unused data from the device memory before reloading the project.
Event ID: 60000: Tag update error; one or more process tags cannot be read or written to the connected controller.
Verify tag addresses in the WinCC flexible project match the PLC data block structure. Check communication link status.
Event ID: 70000: Recipe data error; recipe records cannot be read from or written to the configured storage location.
Check available memory on the device or external memory card. Verify recipe configuration in WinCC flexible is correct.
System Event: RTC Fault: Real-time clock battery is low or the internal clock has lost its settings after a power interruption.
Replace the internal backup battery. Reconfigure the date and time settings on the device after battery replacement.

Frequently Asked Questions

What engineering software is required to configure the OP 177B?

The OP 177B is configured using Siemens WinCC flexible 2008 or later. Projects are compiled and transferred to the device via MPI, PROFIBUS DP, Ethernet, or USB connection.

Which Siemens PLC families are compatible with the OP 177B?

The OP 177B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs, as well as SIMATIC WinAC controllers. Communication is supported via MPI, PROFIBUS DP, and Ethernet protocols.

What is the front panel protection rating of the 6AV6344-2AD14-0CF6?

The front panel of the OP 177B carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets. The rear of the unit is rated IP20.

Can the OP 177B display process trends and alarms?

Yes, the OP 177B supports trend displays, alarm logging with acknowledgment, and alarm history functions. These features are configured within the WinCC flexible project.

What supply voltage does the OP 177B require?

The OP 177B operates on a 24 V DC supply voltage. The power consumption is a maximum of 12 W under normal operating conditions.

Troubleshooting

Display remains blank after power on

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

Restore the 24 V DC supply to within specification. If the supply is correct and the display remains blank, the internal power supply board or backlight inverter may require replacement.

HMI fails to establish communication with the PLC

Check the MPI or PROFIBUS DP cable connections and verify that bus termination resistors are correctly installed at both ends of the network. Confirm that the HMI station address and baud rate match the PLC network settings.

Correct any address conflicts or baud rate mismatches in the WinCC flexible project and re-transfer. Replace damaged cables or connectors as necessary.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touchscreen through the device's Control Panel settings accessible during startup. Check for physical damage or contamination on the touch surface.

Perform a touchscreen calibration via the SIMATIC HMI Control Panel. If calibration does not resolve the issue, the touchscreen overlay may need to be replaced.

Project transfer fails via Ethernet or MPI

Verify the IP address or MPI address configured in WinCC flexible matches the device settings. Check that the PC and HMI are on the same network segment and that no firewall is blocking the transfer port.

Correct the communication settings in WinCC flexible and on the device. Ensure the correct transfer channel is enabled on the HMI via the Control Panel transfer settings.

Device repeatedly restarts or shows a white screen on boot

This may indicate a corrupted project or firmware issue. Attempt to boot the device into the Transfer mode by holding the appropriate key combination during startup to bypass the loaded project.

Re-transfer a valid compiled project using WinCC flexible. If the issue persists, perform a firmware update using ProSave to restore the operating system to a known good state.

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