Siemens 6AV6344-2AD24-0MF7 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD24-0MF7 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD24-0MF7 is an Operator Panel (OP 177B) belonging to the SIMATIC HMI series, designed for machine-level human-machine interface applications. This unit provides a monochrome or color display with touch and key-based operation, forming part of Siemens' mid-range HMI panel lineup. The OP 177B is engineered for direct integration with Siemens SIMATIC PLCs and third-party controllers via standardized communication interfaces.

The 6AV6344-2AD24-0MF7 variant features a 5.7-inch STN color display with a resolution of 320 x 240 pixels (QVGA) and supports both touch screen and function key input methods. It is equipped with MPI/PROFIBUS DP and RS-422/RS-485 interfaces, enabling flexible connectivity to S7-200, S7-300, and S7-400 PLCs. The panel operates on 24 V DC supply, includes 512 KB user memory, and supports configuration via Siemens WinCC flexible software. The unit carries CE and UL certifications and is rated IP65 on the front face for protection against dust and water ingress.

The OP 177B is widely deployed in manufacturing, packaging, and process automation environments where a compact, robust operator interface is required at the machine level. Its combination of touch and key operation makes it suitable for applications demanding both graphical visualization and tactile input, such as conveyor systems, injection molding machines, and assembly lines. The panel's compatibility with the broad SIMATIC controller family makes it a versatile choice for both new installations and retrofit projects.

Technical Specifications

Display Size	5.7 inch
Display Type	STN color LCD
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Touch Technology	Resistive touchscreen with function keys
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485
User Memory	512 KB
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
Certifications	CE, UL, cULus
Configuration Software	WinCC flexible 2005 or higher
Mounting	Panel mounting

Common Error Codes & System Events

Event ID: 10000: Configuration error detected during startup; the loaded project is incompatible with the panel firmware version.
Reload a compatible project using WinCC flexible. Ensure the firmware version on the panel matches the project settings.
Event ID: 10001: Communication connection to the configured PLC controller has failed or cannot be established.
Check MPI/PROFIBUS DP cable connections and bus termination resistors. Verify PLC address settings match the HMI project configuration.
Event ID: 20000: System memory is insufficient to complete the requested operation.
Reduce the number of active screens or objects in the project. Optimize the WinCC flexible project to reduce memory usage.
Event ID: 40000: Recipe data error; recipe record cannot be read or written correctly.
Check recipe configuration in WinCC flexible. Verify that recipe data memory allocation is within panel limits and re-transfer the project.
Event ID: 50000: Tag update error; a configured process tag cannot be read from or written to the controller.
Verify the tag address in WinCC flexible matches the PLC data block or memory area. Check communication link integrity.
Event ID: 70000: Alarm buffer overflow; the number of pending alarms exceeds the panel buffer capacity.
Acknowledge and clear active alarms. Review alarm configuration to reduce simultaneous alarm occurrences or increase acknowledgment frequency.
Event ID: 110000: Panel operating system error or firmware fault detected during runtime.
Perform a panel restart. If the fault persists, update the panel firmware using ProSave or WinCC flexible and reload the project.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B (6AV6344-2AD24-0MF7)?

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

What software is required to configure this HMI panel?

The OP 177B is configured using Siemens WinCC flexible 2005 or a later version. Projects are transferred to the panel via MPI cable or USB using the ProSave utility.

What is the supply voltage for the 6AV6344-2AD24-0MF7?

The panel requires a 24 V DC power supply. Ensure the supply is within the permitted tolerance range, typically 19.2 V DC to 28.8 V DC.

Is the front panel of the OP 177B protected against dust and water?

Yes, the front face of the OP 177B is rated IP65, providing full protection against dust ingress and protection against low-pressure water jets. The rear of the unit is rated IP20.

Can the OP 177B display be used in portrait orientation?

The OP 177B is designed for landscape orientation and does not natively support portrait mode operation. Mounting and project configuration should be planned for landscape use.

Troubleshooting

Display remains blank after power on

Measure 24 V DC at the power supply connector on the rear of the panel. Check that the supply voltage is within the 19.2 V to 28.8 V DC range. Inspect internal fuse if accessible.

Restore correct supply voltage. If the display backlight has failed, the backlight unit may require replacement. If the panel does not boot at all, attempt a firmware recovery using ProSave via MPI.

HMI cannot establish communication with the PLC

Verify MPI or PROFIBUS DP cable integrity and check bus termination at both ends of the network. Confirm that the PLC station address configured in the WinCC flexible project matches the actual PLC address.

Replace or reseat the communication cable. Correct the station address in the HMI project and retransfer. Ensure only one active bus termination resistor is present at each end of the PROFIBUS segment.

Touchscreen input is inaccurate or unresponsive

Check for physical damage or contamination on the touch surface. Determine if the calibration has drifted by observing the offset between touch input and cursor position on screen.

Perform a touchscreen recalibration via the panel's Control Panel menu accessible during startup (press and hold the touch area during boot). Clean the screen surface with a soft, dry cloth.

Project transfer fails or times out during download

Check the MPI cable connection between the PC and the panel. Verify that WinCC flexible is set to the correct transfer mode and that the panel is in transfer mode (accessible via the Control Panel or Start Center).

Set the panel to transfer mode manually via the Start Center. Use a known-good MPI/PC adapter cable. Ensure the correct COM port and transfer speed are selected in WinCC flexible.

Panel repeatedly restarts or shows a runtime error on startup

The loaded project may be corrupted or incompatible with the current firmware version. Check the firmware version via the panel's System Info screen in the Control Panel.

Use ProSave to update the panel firmware to a version compatible with the WinCC flexible project. Retransfer the project after firmware update. If the issue persists, perform a factory reset via ProSave.

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