Siemens 6AV6344-2AD14-0MF7 OP177B

€ 1.995,00

SKU: 6AV6344-2AD14-0MF7 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD14-0MF7 is an OP177B operator panel belonging to the SIMATIC HMI series, designed for machine-level visualization and operator control in industrial automation environments. This unit provides a monochrome display interface for process monitoring and control, and is part of Siemens' established line of operator panels intended for panel mounting in control cabinets and machinery. The OP177B is configured for use with the WinCC flexible engineering software platform.

The 6AV6344-2AD14-0MF7 features a 5.7-inch STN monochrome display with a resolution of 320 x 240 pixels (QVGA), supporting up to 4 gray scales. The panel includes a membrane keypad with function keys for operator input and is equipped with MPI/PROFIBUS DP and RS-422/RS-485 interfaces for PLC connectivity. It operates on a 24 V DC supply and supports configuration via WinCC flexible 2008 or later, with onboard flash memory for project and recipe storage. The unit carries CE and UL certifications and is rated IP65 at the front panel.

The OP177B is widely deployed in machine tool, packaging, and conveyor applications where a cost-effective, robust operator interface is required without the need for color or touch functionality. Its compatibility with the SIMATIC S7-200, S7-300, and S7-400 PLC families makes it a versatile choice for retrofit and new installation projects across manufacturing and process industries. The panel-mount design and IP65 front protection make it suitable for environments with dust and water spray exposure.

Technical Specifications

Display Size	5.7 inch
Display Type	STN monochrome
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	4 gray scales
Input Voltage	24 V DC
Power Consumption	Max. 9 W
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
Mounting	Panel mounting
Certifications	CE, UL
Series/Product Family	SIMATIC HMI OP177B

Common Error Codes & System Events

Event ID: 10000: Configuration error detected on startup; the loaded project is incompatible with the panel firmware version.
Re-transfer the project using a compatible version of WinCC flexible. Ensure firmware and project version match.
Event ID: 20000: Communication error with the configured PLC; connection to the controller cannot be established.
Check MPI/PROFIBUS DP cable connections, verify bus address settings, and confirm PLC is powered and in RUN mode.
Event ID: 40000: Tag read/write error; a configured variable cannot be read from or written to the PLC.
Verify the tag address in WinCC flexible matches the actual PLC memory address. Check PLC program for address conflicts.
Event ID: 50000: Recipe data error; recipe records cannot be read or written correctly.
Check recipe configuration in WinCC flexible. Verify available flash memory and re-transfer the project if necessary.
Event ID: 60000: System memory low; available memory for runtime operation is insufficient.
Reduce the number of active screens or objects. Optimize the project configuration and re-transfer to the panel.
Event ID: 70000: Firmware update failed or interrupted during the update process.
Repeat the firmware update procedure using ProSave or WinCC flexible. Ensure stable power supply during the update.
Event ID: 80000: Internal device error; a hardware fault has been detected within the panel.
Perform a factory reset. If the error persists, the panel requires repair or replacement of internal components.

Frequently Asked Questions

Which engineering software is required to configure the OP177B?

The OP177B (6AV6344-2AD14-0MF7) is configured using Siemens WinCC flexible 2008 or a compatible later version. Projects are transferred to the panel via MPI, PROFIBUS DP, or USB using a PC adapter.

Which Siemens PLCs are compatible with this operator panel?

The OP177B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It also supports communication with S7-1200 and S7-1500 controllers through appropriate configuration.

What is the front panel protection rating of the 6AV6344-2AD14-0MF7?

The front panel of the OP177B is rated IP65, providing protection against dust ingress and water jets. The rear of the unit is rated IP20.

Does the OP177B support touch input?

No, the OP177B does not feature a touchscreen. Operator input is performed exclusively via the integrated membrane keypad and function keys.

What is the operating voltage for this panel?

The 6AV6344-2AD14-0MF7 operates on a 24 V DC supply with a maximum power consumption of approximately 9 W.

Troubleshooting

Display remains blank after power on

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

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

No communication with PLC after startup

Verify the MPI or PROFIBUS DP bus address configured on the panel matches the network settings. Inspect the communication cable for damage and check termination resistors at both ends of the bus.

Correct the bus address in the panel settings, replace damaged cables, and ensure proper bus termination. Confirm the PLC is powered and in RUN mode.

Project transfer fails from engineering PC to panel

Check the PC adapter connection and the selected transfer interface in WinCC flexible. Verify that the panel is in transfer mode and that the correct COM port or USB adapter driver is installed on the PC.

Set the panel to transfer mode via the Start Center menu, select the correct interface in WinCC flexible, and retry the transfer. Update or reinstall the PC adapter driver if necessary.

Function keys do not respond to operator input

Inspect the membrane keypad for physical damage or contamination. Check whether the issue is present in all operating screens or only specific ones, which may indicate a configuration issue.

Clean the keypad surface and check for mechanical damage. If keys are unresponsive across all screens, the membrane keypad assembly may need replacement. If screen-specific, review function key assignments in WinCC flexible.

Panel repeatedly restarts or shows watchdog reset message

Check the 24 V DC supply for voltage dips or instability under load. Review the project for excessively complex scripts or update cycles that may overload the panel CPU.

Stabilize the power supply and ensure it is adequately rated for the panel load. Simplify the project configuration if CPU overload is suspected, and update the panel firmware to the latest available version.

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