Siemens 6AV6344-2AD14-0MF6 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD14-0MF6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD14-0MF6 is an OP 177B operator panel belonging to the SIMATIC HMI series, designed for machine-level human-machine interface applications. This unit provides a compact and robust operator interface solution for monitoring and controlling industrial automation systems. It is part of Siemens' established SIMATIC HMI product line, which is widely used in conjunction with SIMATIC S7 PLCs and other Siemens automation platforms.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels (QVGA) and supports 256 colors, providing clear visualization of process data and operator screens. The panel includes a membrane keypad with function keys for navigation and control inputs. It supports MPI, PROFIBUS DP, and Ethernet (PROFINET) communication interfaces, enabling flexible integration into existing automation networks. Configuration is performed using Siemens WinCC flexible software, and the unit provides onboard flash memory for project storage.

The OP 177B is commonly deployed in manufacturing, automotive, food and beverage, and packaging industries where a cost-effective, mid-range HMI panel is required at the machine level. Its compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it suitable for a broad range of machine control applications. The panel's compact form factor and standard panel-cut mounting make it straightforward to integrate into control cabinet doors and machine enclosures.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Type	STN color LCD
Display Colors	256 colors
Input Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (PROFINET)
Configuration Software	WinCC flexible 2005 or higher
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, cUL
Series	SIMATIC HMI OP 177B

Common Error Codes & System Events

Event ID: 10000: Configuration error: The project loaded on the panel contains configuration errors or is incompatible with the firmware version.
Recompile and re-download the WinCC flexible project ensuring compatibility with the panel firmware version.
Event ID: 20000: Communication error: Connection to the configured PLC or controller cannot be established.
Check communication cable connections, verify MPI/PROFIBUS address settings, and confirm PLC is powered and operational.
Event ID: 40000: Tag read error: A configured tag cannot be read from the connected controller.
Verify the tag address in WinCC flexible matches the actual PLC memory address. Check PLC program for the corresponding data block or variable.
Event ID: 50000: Tag write error: A value cannot be written to the configured controller tag.
Check that the target PLC address is writable and not write-protected. Verify communication link integrity.
Event ID: 60000: Flash memory error: An error occurred during read or write access to the internal flash memory.
Attempt to re-download the project. If the error persists, the internal flash memory may be faulty and the panel may require repair or replacement.
Event ID: 70000: System error: Internal system fault detected on the HMI panel.
Perform a power cycle. If the fault persists, perform a factory reset and re-download the project. Contact Siemens support if unresolved.
Event ID: 80000: Printer error: Communication with the configured printer has failed or the printer is unavailable.
Check printer connection and configuration settings in the WinCC flexible project. Verify printer is powered and online.

Frequently Asked Questions

Which configuration software is required for the OP 177B (6AV6344-2AD14-0MF6)?

The OP 177B is configured using Siemens WinCC flexible 2005 or later versions. Projects are compiled in WinCC flexible and downloaded to the panel via MPI, PROFIBUS, or Ethernet connection.

Which PLCs are compatible with the Siemens OP 177B?

The OP 177B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs, as well as other Siemens controllers supported by WinCC flexible. Third-party controllers with supported communication drivers may also be connected.

What communication interfaces does the 6AV6344-2AD14-0MF6 support?

This panel supports MPI, PROFIBUS DP, and Ethernet (PROFINET) communication interfaces, allowing integration into a variety of Siemens automation network architectures.

What is the supply voltage for the OP 177B?

The OP 177B requires a 24 V DC power supply. Ensure the supply is within the specified tolerance range as defined in the Siemens operating instructions.

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 suitable for installation in environments where dust and water spray may be present.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Verify the supply is within the specified range and that the connector is properly seated.

Restore correct 24 V DC supply. If voltage is correct and display remains blank, inspect internal fuse and power supply circuitry. The panel may require repair or replacement of the internal power supply board.

HMI panel fails to communicate with the PLC

Verify the communication cable type and wiring for MPI or PROFIBUS. Check that the bus address configured on the panel matches the network configuration. Confirm the PLC is powered and running.

Correct any wiring faults, set the correct MPI or PROFIBUS address in the panel settings, and ensure termination resistors are properly placed at both ends of the bus. Re-download the WinCC flexible project if communication parameters were changed.

Touchscreen or keypad inputs are not responding

Check whether the panel is in transfer mode or displaying a system screen that prevents normal operation. Verify that the project is correctly loaded and running.

Restart the panel and allow the project to load fully. If keypad keys are physically damaged or unresponsive, the membrane keypad assembly may need replacement.

Project download fails or transfer is interrupted

Check the transfer cable connection between the engineering PC and the panel. Verify that the panel is set to transfer mode and that the correct communication interface is selected in WinCC flexible.

Ensure the panel is in transfer mode before initiating download. Use a known-good MPI or Ethernet cable. Confirm firewall or antivirus software on the PC is not blocking the WinCC flexible transfer process.

Display shows distorted or incorrect colors

Inspect the display for physical damage. Check if the issue is consistent across all screens or only on specific project screens, which may indicate a configuration issue rather than a hardware fault.

If the distortion is hardware-related, the LCD module may require replacement. If the issue is screen-specific, review the graphic and color configuration in the WinCC flexible project and re-download.

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