Siemens 6AV6344-2AC14-0MF6 OP177B

€ 1.995,00

SKU: 6AV6344-2AC14-0MF6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AC14-0MF6 is an OP177B operator panel belonging to the SIMATIC HMI series, designed for human-machine interface applications in industrial automation environments. This unit provides a monochrome display with keypad-based operation, enabling operators to monitor and control machine processes without a touchscreen interface. As part of the SIMATIC HMI family, it is engineered to integrate seamlessly with Siemens SIMATIC S7 and S5 controller platforms.

The OP177B features a 5.7-inch STN monochrome display with a resolution of 320 x 240 pixels and supports MPI, PROFIBUS DP, and RS-422/RS-485 communication interfaces for flexible PLC connectivity. The panel is configured and programmed using WinCC flexible software, supporting structured project management and tag-based data handling. It operates on a 24 V DC supply and is rated IP65 at the front panel, providing protection against dust and water ingress in demanding industrial environments. The unit includes onboard flash memory for project and recipe storage.

The OP177B is widely deployed in machine building, manufacturing automation, and process control applications where robust keypad operation is preferred over touchscreen interaction. It is commonly found on packaging machinery, conveyor systems, and general-purpose industrial machines requiring reliable operator interface solutions. Its compact panel-mount design and broad PLC compatibility make it suitable for both OEM machine builders and system integrators.

Technical Specifications

Display Size	5.7 inch
Display Type	STN monochrome
Display Resolution	320 x 240 pixels
Touch Technology	Keypad (no touchscreen)
Input Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, RS-422/RS-485
IP Protection Rating (Front)	IP65
IP Protection Rating (Rear)	IP20
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
Configuration Software	WinCC flexible 2008 or later
Mounting	Panel mount
Certifications	CE, UL, cULus
Series	SIMATIC HMI OP177B

Common Error Codes & System Events

Event ID: 10000: Configuration error detected on startup; the loaded project is incompatible or corrupt.
Reload the project using WinCC flexible. Verify the project version matches the panel firmware version.
Event ID: 20000: Communication link to the PLC has been lost or cannot be established.
Check MPI or PROFIBUS DP cable connections and termination resistors. Verify PLC address settings match the HMI project configuration.
Event ID: 40000: Tag read/write error; the HMI cannot access a configured PLC data address.
Verify the PLC program contains the referenced data blocks and addresses. Check that the PLC is in RUN mode.
Event ID: 50000: Overflow of the alarm buffer; too many alarms have been generated in a short period.
Acknowledge and clear pending alarms. Review the alarm configuration in WinCC flexible to reduce unnecessary alarm triggers.
Event ID: 60000: Internal flash memory error; project or recipe data cannot be written or read.
Perform a memory reset via the panel's Start Center. If the error persists, the internal flash memory may require service or panel replacement.
Event ID: 70000: Firmware update failed or firmware version mismatch detected.
Re-flash the panel firmware using ProSave or WinCC flexible. Ensure the firmware version is compatible with the loaded project.
Event ID: 80000: Recipe data error; a recipe record could not be read from or written to storage.
Check available flash memory. Re-transfer the recipe data from the engineering station and verify recipe tag assignments in the project.

Frequently Asked Questions

What communication interfaces does the OP177B support?

The OP177B supports MPI, PROFIBUS DP, and RS-422/RS-485 interfaces, allowing connection to a wide range of Siemens SIMATIC S7 and S5 PLCs as well as third-party controllers via serial protocols.

Which software is used to configure and program the 6AV6344-2AC14-0MF6?

The panel is configured using Siemens WinCC flexible 2008 or a compatible version. Projects are transferred to the panel via MPI, PROFIBUS DP, or a USB/serial connection using ProSave.

Is the OP177B compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the OP177B is fully compatible with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP, and can also communicate with S7-200 PLCs via RS-485 using the PPI protocol.

What is the front panel protection rating of the 6AV6344-2AC14-0MF6?

The front panel of the OP177B is rated IP65, providing full protection against dust ingress and resistance to low-pressure water jets, making it suitable for industrial panel installations.

Does the OP177B have a touchscreen?

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

Troubleshooting

Display remains blank after power is applied

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

Correct any supply voltage issues. If the supply is confirmed good and the display remains blank, the internal power supply board or backlight may be faulty and the unit should be sent for repair.

HMI cannot establish communication with the PLC

Verify the MPI or PROFIBUS DP cable is correctly wired and terminated. Check that the bus address configured in the HMI project matches the physical address set on the panel and that the PLC is in RUN mode.

Correct cable wiring and ensure proper bus termination at both ends of the network. Adjust address settings in WinCC flexible if there is a mismatch and re-transfer the project to the panel.

Panel repeatedly restarts or enters a boot loop

This may indicate a corrupt project file or a firmware issue. Attempt to access the Start Center during boot by pressing the appropriate key combination to prevent the project from loading automatically.

Use ProSave to perform a firmware update or to clear the panel memory. Re-transfer a valid project from the engineering station after the memory has been reset.

Keypad buttons are unresponsive or intermittently fail

Inspect the membrane keypad for physical damage, contamination, or deformation. Check the internal ribbon cable connection between the keypad membrane and the main board.

Clean the keypad surface if contamination is present. If the ribbon cable is damaged or the membrane is worn, the keypad assembly should be replaced by a qualified technician.

Recipe data is lost after a power cycle

Check whether the recipe data is configured to be stored in the panel's internal flash memory or in a volatile memory area. Verify that the write operation completed before power was removed.

Ensure the project is configured to save recipe data to flash memory rather than RAM. Re-transfer the project with corrected memory assignment settings and verify recipe save operations complete successfully before powering down.

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