Siemens 6AV6344-2AD14-0MG7 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD14-0MG7 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD14-0MG7 is an OP 177B operator panel belonging to the SIMATIC HMI family of human-machine interface devices. This unit provides a compact and robust solution for machine-level visualization and operator control, featuring a monochrome or color display depending on the variant. As part of the SIMATIC HMI Comfort and Mobile Panel lineage, the OP 177B is designed for direct integration with Siemens SIMATIC S7 and other compatible PLC systems.

The 6AV6344-2AD14-0MG7 features a 5.7-inch STN color display with a resolution of 320 x 240 pixels (QVGA) and supports touch and key-based operation through integrated function keys. It includes MPI/PROFIBUS DP and RS-422/RS-485 communication interfaces, enabling flexible connectivity to a wide range of controllers. The panel operates on 24 V DC supply voltage and is configured using WinCC flexible engineering software, supporting recipe management, alarm logging, and trend displays. Onboard flash memory supports project storage and data logging without the need for external media.

The OP 177B is widely deployed in manufacturing, packaging, and process automation environments where a compact operator interface is required at the machine level. Its rugged front panel with IP65 protection rating makes it suitable for installation in control cabinet doors in environments with dust and water ingress risks. The panel is commonly found in automotive assembly lines, food and beverage processing equipment, and general-purpose industrial machinery.

Technical Specifications

Display Size	5.7 inch
Display Type	STN color LCD
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Input/Operating Voltage	24 V DC
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485
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
Engineering Software	WinCC flexible 2005 or higher
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes and System Events

Event ID: 10000: Connection to the configured PLC cannot be established or has been interrupted.
Check MPI/PROFIBUS DP cable connections and termination resistors. Verify PLC address settings match the HMI project configuration.
Event ID: 10001: Communication timeout between the HMI panel and the connected controller.
Check network cabling and connector integrity. Verify baud rate and station address settings on both the HMI and PLC.
Event ID: 20000: Project download failed or project data is corrupted.
Re-download the project from WinCC flexible. Ensure the correct communication interface and transfer settings are selected.
Event ID: 40000: Tag read/write error — the HMI cannot access a configured PLC tag.
Verify the tag address exists in the PLC program and that the data type matches the HMI tag configuration.
Event ID: 70010: Internal flash memory error or project storage fault.
Perform a memory reset via the Start Center and re-download the project. If the fault persists, the internal flash memory may require service.
Event ID: 50000: Recipe data error — recipe record cannot be read or written.
Check recipe configuration in WinCC flexible. Verify sufficient memory is available and that recipe tag addresses are valid.
Event ID: 60000: Alarm buffer overflow — the number of pending alarms exceeds the buffer capacity.
Acknowledge and clear active alarms. Review alarm configuration to reduce simultaneous alarm triggers or increase buffer size in the project settings.

Frequently Asked Questions

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

The OP 177B is configured using Siemens WinCC flexible 2005 or later versions. Projects are transferred to the panel via MPI, PROFIBUS DP, or USB using a PC adapter.

Which PLC systems are compatible with the Siemens 6AV6344-2AD14-0MG7?

The OP 177B supports connectivity to Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP. It also supports third-party controllers via RS-422/RS-485 serial communication using standard drivers.

What is the supply voltage for the OP 177B?

The panel requires a 24 V DC power supply. Ensure the supply is within the specified tolerance range and adequately rated for the panel's power consumption.

Does the OP 177B support recipe management and data logging?

Yes, the OP 177B supports recipe management, alarm logging, and trend displays through the WinCC flexible project configuration. Data is stored in the panel's internal flash memory.

What is the front panel protection rating of the 6AV6344-2AD14-0MG7?

The front panel of the OP 177B carries an IP65 protection rating, making it suitable for installation in environments with dust and water spray exposure.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check that the supply is within tolerance and that the power connector is fully seated.

Restore correct supply voltage if out of range. If voltage is correct and display remains blank, the internal power supply board or backlight inverter may be faulty and require replacement.

HMI cannot establish communication with the PLC

Verify MPI or PROFIBUS DP cable connections, termination resistors, and station addresses on both devices. Check that the baud rate configured in the HMI project matches the PLC network settings.

Correct any address or baud rate mismatches in the WinCC flexible project and re-download. Replace damaged cables or connectors as needed. Ensure only one active termination resistor is present at each end of the bus.

Touchscreen or function keys not responding

Check whether the panel is in transfer mode or Start Center mode, which disables runtime operation. Inspect the front panel for physical damage to the keypad membrane or touch surface.

Exit transfer mode and restart the runtime application. If keys remain unresponsive, recalibrate the touch interface via the Start Center settings. A damaged keypad membrane will require hardware replacement.

Project download fails or transfer is interrupted

Verify the PC adapter connection and selected communication interface in WinCC flexible transfer settings. Check that the panel is set to transfer mode via the Start Center.

Set the panel to transfer mode, confirm the correct interface (MPI, PROFIBUS, or USB) is selected, and retry the download. If the issue persists, perform a factory reset via the Start Center and re-download the project.

Panel displays 'No project' or loads an incorrect project after restart

The internal flash memory may have been corrupted or the project was not fully transferred. Check the project version in WinCC flexible against the version stored on the panel.

Re-download the correct project version from WinCC flexible. If the panel repeatedly loses the project after power cycling, the internal flash memory may be degraded and the unit should be serviced.

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