Siemens 6AV6344-2AD24-0CG6 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD24-0CG6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD24-0CG6 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 keypad-based operation, serving as a compact and robust panel for process visualization and control. As part of Siemens' established SIMATIC HMI portfolio, it is engineered for reliable integration into automated production environments.

The OP 177B features a 5.7-inch STN display and supports both MPI and PROFIBUS DP communication interfaces, enabling seamless connectivity with SIMATIC S7 PLCs and other compatible controllers. It includes integrated Ethernet capability and supports configuration via WinCC flexible engineering software. The panel offers a membrane keypad with function keys, providing tactile feedback for operator input, and is built to withstand industrial environments with an IP65 front panel protection rating.

The OP 177B is widely deployed in manufacturing, automotive, food and beverage, and process industries where a compact, keypad-operated HMI is required at the machine level. Its compatibility with the SIMATIC S7-300 and S7-400 controller families makes it a common choice for retrofitting and new installations alike. The panel's robust construction and broad communication support make it suitable for applications requiring reliable local operator control and status visualization.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Display Resolution	320 x 240 pixels (QVGA)
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
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
Certifications	CE, UL, cULus
Engineering Software	WinCC flexible 2005 or higher
Series/Product Family	SIMATIC HMI OP 177B

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 a compatible project using WinCC flexible. Ensure the firmware version on the panel matches the project settings.
Event ID: 20000: Communication connection to the PLC has been lost or cannot be established.
Check MPI/PROFIBUS DP or Ethernet cabling 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 tag.
Verify the tag address in WinCC flexible matches the actual PLC data block or memory address. Check PLC program for address conflicts.
Event ID: 50000: Internal device error or hardware fault detected.
Perform a power cycle. If the fault persists, back up the project and perform a factory reset, then re-transfer the project. Contact Siemens support if unresolved.
Event ID: 60000: Overflow of the alarm or event buffer; too many simultaneous alarms are pending.
Acknowledge and clear active alarms. Review the alarm configuration in WinCC flexible to reduce simultaneous alarm load or increase buffer size.
Event ID: 70000: Recipe data error; a recipe record could not be read from or written to memory.
Check available internal memory on the panel. Verify recipe configuration in WinCC flexible and re-transfer the project if necessary.
Event ID: 80000: Firmware update failed or interrupted during the update process.
Restart the firmware update procedure using ProSave or WinCC flexible. Ensure stable power supply during the update and use the correct firmware version for this panel.

Frequently Asked Questions

Which communication interfaces does the OP 177B (6AV6344-2AD24-0CG6) support?

The OP 177B supports MPI, PROFIBUS DP, and Ethernet (RJ45) interfaces, allowing direct connection to SIMATIC S7-200, S7-300, and S7-400 PLCs as well as third-party controllers via appropriate drivers.

Which engineering software is required to configure this panel?

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

What is the supply voltage for the 6AV6344-2AD24-0CG6?

The panel operates on a 24 V DC supply voltage, which is standard for SIMATIC HMI devices in this class.

Is the OP 177B compatible with TIA Portal?

The OP 177B is not natively supported in TIA Portal; it is configured exclusively with WinCC flexible. Migration to a newer panel such as the KTP700 Basic would be required for TIA Portal-based projects.

What is the front panel protection rating of this unit?

The OP 177B has an IP65 protection rating on the front panel, making it resistant to dust and water jets, suitable for most industrial machine enclosures.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector using a multimeter. Verify that 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, the internal backlight or power supply board may be faulty and the unit should be sent for repair or replacement.

Panel fails to communicate with the PLC via PROFIBUS DP

Verify PROFIBUS cable connections, bus termination at both ends of the network, and that the panel's PROFIBUS address in WinCC flexible matches the configured address on the panel itself.

Correct any address mismatches via the panel's Start Center settings. Replace damaged PROFIBUS cables or connectors. Ensure bus termination resistors are active only at the two physical ends of the network.

Touchscreen or keypad inputs are not responding correctly

Check for physical damage to the membrane keypad. Perform a keypad test via the panel's Start Center diagnostics menu to identify unresponsive keys.

Clean the keypad surface. If keys are mechanically damaged or the membrane is worn, the keypad assembly requires replacement. For persistent issues, a firmware re-flash may resolve software-related input faults.

Project transfer fails from WinCC flexible to the panel

Confirm the transfer channel settings in WinCC flexible match the physical connection type (Ethernet, MPI, or USB). Check that the panel is in Transfer mode via the Start Center.

Switch the panel to Transfer mode manually through the Start Center. Verify IP address or MPI address settings. Try an alternative transfer cable or interface. Ensure WinCC flexible version is compatible with the panel firmware.

Panel repeatedly restarts or shows a boot loop

A corrupted project or failed firmware update can cause continuous restarts. Attempt to access the Start Center by pressing the appropriate key combination during boot.

Enter the Start Center and perform a factory reset (Format Memory). Re-transfer a valid project using WinCC flexible. If the boot loop persists, the panel firmware may need to be reloaded using ProSave via the service interface.

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