Siemens 6AV6344-2AD14-0CG7 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD14-0CG7 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD14-0CG7 is an OP 177B operator panel belonging to the SIMATIC HMI family of human-machine interface devices. This unit provides a monochrome STN display with touch and key-based operation, designed for direct integration into Siemens automation environments. It is a mid-range panel PC intended for machine-level visualization and operator control tasks.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels and supports both touch screen and membrane keypad input. It includes PROFIBUS DP and MPI interfaces for communication with SIMATIC S7 PLCs, as well as a RS-422/RS-485 serial interface for third-party controller connectivity. The panel operates on 24 V DC and includes an integrated configuration memory, supporting projects created with WinCC flexible 2005 or later. It carries an IP65 protection rating on the front panel, making it suitable for installation in control cabinet doors.

The OP 177B is widely deployed in manufacturing, process automation, and machine tool applications where a compact, robust operator interface is required. Its compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it a versatile choice for a broad range of automation tasks. The panel is commonly found in packaging machinery, conveyor systems, and general industrial equipment requiring local operator interaction.

Technical Specifications

Display Size	5.7 inch
Display Type	STN monochrome
Display Resolution	320 x 240 pixels (QVGA)
Input Method	Touch screen and membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 10 W
Communication Interface	PROFIBUS DP, MPI, RS-422/RS-485
IP/Protection Rating	IP65 (front panel)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
Mounting	Panel mounting
Series/Product Family	SIMATIC HMI OP 177B
Certifications	CE, UL, cULus

Common Error Codes and System Events

Event ID: 10000: Configuration error detected during startup; the loaded project may be incompatible or corrupted.
Reload the project using WinCC flexible. Verify the project version is compatible with the panel firmware.
Event ID: 20000: Communication error on MPI/PROFIBUS DP interface; connection to the PLC has been lost.
Check MPI/PROFIBUS cable connections and termination resistors. Verify PLC address settings match the HMI configuration.
Event ID: 40000: Tag read/write error; the HMI cannot access a configured PLC tag.
Verify the tag address in WinCC flexible matches the actual PLC data block or memory address. Check PLC program for address changes.
Event ID: 50000: System memory low; available memory for runtime operation is insufficient.
Reduce the number of active screens or logged data. Optimize the project to reduce memory usage and reload.
Event ID: 60000: Firmware update error; the firmware transfer to the panel was interrupted or failed.
Restart the firmware update procedure using ProSave or WinCC flexible. Ensure stable communication during the transfer.
Event ID: 70000: Backup/restore error; data transfer during backup or restore operation failed.
Check the communication cable and PC connection. Retry the backup or restore operation using ProSave with the correct panel type selected.
Event ID: 30000: Recipe data error; recipe records could not be read from or written to internal memory.
Check recipe configuration in WinCC flexible. Verify available internal memory and re-transfer the project if necessary.

Frequently Asked Questions

Which software is used to configure the OP 177B panel?

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 ProSave or WinCC flexible transfer tools.

Which PLCs are compatible with the Siemens OP 177B?

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

What is the front panel protection rating of the 6AV6344-2AD14-0CG7?

The front panel of the OP 177B carries an IP65 protection rating, making it resistant to dust and water jets, suitable for installation in control cabinet doors.

Can the OP 177B display color graphics?

No, the 6AV6344-2AD14-0CG7 variant uses a monochrome STN display. Color variants exist within the OP 177B family, but this specific part number features a monochrome screen.

What input voltage does the OP 177B require?

The OP 177B operates on 24 V DC supply voltage, which is standard for SIMATIC HMI panels and compatible with typical industrial control cabinet power supplies.

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 correct 24 V DC supply. If voltage is correct and display remains blank, the internal backlight or power supply board may be faulty and the unit should be sent for repair or replacement.

HMI cannot establish communication with the S7 PLC

Verify the MPI or PROFIBUS DP cable is correctly connected and terminated. Check that the HMI station address and PLC address configured in WinCC flexible match the physical network settings.

Correct any address mismatches in the WinCC flexible project. Replace or reseat the communication cable. Ensure bus termination resistors are active at both ends of the PROFIBUS segment.

Touchscreen does not respond to input

Check whether the membrane keypad still functions. Attempt a touchscreen calibration from the panel's start center or control panel menu.

Perform a touchscreen recalibration via the SIMATIC HMI start center. If the touchscreen remains unresponsive after calibration, the touch glass assembly may require replacement.

Project transfer fails during download from WinCC flexible

Check the communication interface selected in WinCC flexible matches the physical connection (MPI, PROFIBUS, or USB). Verify the panel is in transfer mode via the start center.

Set the panel to transfer mode manually through the start center. Confirm the correct COM port or network address is selected in WinCC flexible. Retry the transfer and check for cable faults if the issue persists.

Panel repeatedly restarts or shows a boot loop

This may indicate a corrupted project file or a firmware mismatch. Attempt to access the start center during boot by pressing the appropriate key combination.

Use ProSave to perform a firmware update or restore the panel to factory defaults. Re-transfer a valid WinCC flexible project after the firmware has been successfully restored.

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