Siemens 6AV6344-2AD04-0CG6 OP 177B

€ 1.995,00

SKU: 6AV6344-2AD04-0CG6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD04-0CG6 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 STN display with touch and key-based operation, enabling operators to monitor and control industrial processes directly at the machine. It is part of Siemens' established SIMATIC HMI panel family, which is widely deployed across manufacturing and process automation environments.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels and supports both touch screen and function key input methods. It is equipped with MPI, PROFIBUS DP, and Ethernet (TCP/IP) communication interfaces, allowing integration with a wide range of Siemens SIMATIC S7 controllers and third-party systems. The panel runs on WinCC flexible runtime software and offers 6 MB of user memory for project data, along with a USB interface for data transfer and a memory card slot for project backup and firmware updates. Operating voltage is 24 V DC, and the unit carries CE and UL certifications.

The OP 177B is commonly used in machine tool, packaging, automotive assembly, and general manufacturing applications where a compact, robust operator interface is required at the machine level. Its combination of touch and key operation makes it suitable for environments where gloved operation or harsh conditions may be present. The panel's compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it a versatile choice for both new installations and retrofits in existing Siemens-based automation systems.

Technical Specifications

Display Size	5.7 inch
Display Type	STN monochrome
Display Resolution	320 x 240 pixels (QVGA)
Touch Technology	Resistive touch screen with membrane function keys
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), USB
User Memory	6 MB
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, cULus
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC controller.
Check MPI/PROFIBUS or Ethernet cable connections and verify the configured PLC address matches the actual controller address. Confirm the PLC is powered and in RUN mode.
Event ID: 10001: Connection to the PLC was interrupted during runtime.
Inspect communication cables for damage or loose connections. Verify network settings and PLC program status. Restart the HMI panel if the connection is not re-established automatically.
Event ID: 20000: Project download failed or project data is corrupted.
Re-download the project from WinCC flexible to the panel. Ensure the WinCC flexible version is compatible with the panel firmware version. Check USB or Ethernet connection used for transfer.
Event ID: 40000: System memory low — available user memory is insufficient for the current project.
Reduce the project size by removing unused screens, graphics, or data logs. Ensure the project does not exceed the 6 MB user memory limit of the OP 177B.
Event ID: 50000: Firmware update error — firmware transfer to the panel was interrupted or failed.
Restart the firmware update procedure using the correct firmware version for the OP 177B. Use a compatible memory card or USB connection and ensure stable power supply during the update.
Event ID: 60000: Tag update error — a configured tag could not be read from or written to the PLC.
Verify the tag address configuration in WinCC flexible matches the actual PLC data block or memory address. Check PLC program for address conflicts or data type mismatches.
Event ID: 70000: Recipe data transfer error — recipe data could not be read from or written to the connected controller.
Check recipe configuration in WinCC flexible for correct tag assignments and PLC addresses. Ensure the PLC is in a state that allows data write operations.

Frequently Asked Questions

Which PLCs are compatible with the Siemens OP 177B (6AV6344-2AD04-0CG6)?

The OP 177B is compatible with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It can also communicate with S7-300/400 and other controllers via Ethernet TCP/IP.

What software is used to program and configure the OP 177B?

The OP 177B is configured using Siemens WinCC flexible software. The project is created on a PC and then downloaded to the panel via USB, Ethernet, or MPI/PROFIBUS connection.

What communication interfaces are available on the 6AV6344-2AD04-0CG6?

This panel provides MPI, PROFIBUS DP (via a combined MPI/PROFIBUS port), Ethernet (TCP/IP via RJ45), and USB interfaces for communication and data transfer.

What is the display type and resolution of the OP 177B?

The OP 177B features a 5.7-inch STN monochrome display with a resolution of 320 x 240 pixels (QVGA). It supports both touch screen input and physical membrane function keys.

What is the IP protection rating of the OP 177B panel?

The front face of the OP 177B is rated IP65, making it suitable for panel mounting in environments where dust and water spray may be present. The rear of the unit is rated IP20.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check that the voltage is within the specified range and that polarity is correct. Inspect the internal fuse if accessible.

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

HMI panel does not communicate with the PLC

Verify the communication cable type and wiring for the selected interface (MPI, PROFIBUS, or Ethernet). Check the configured PLC address and baud rate in the WinCC flexible project against the actual PLC settings.

Replace or reseat the communication cable. Correct any address or baud rate mismatches in the WinCC flexible project and re-download the project to the panel. Confirm the PLC is powered and in RUN mode.

Touchscreen does not respond or responds inaccurately

Check whether the touch screen responds at all or only in certain areas. Determine if the issue appeared after a firmware update or physical impact. Attempt a touchscreen recalibration from the panel's system settings menu.

Perform a touchscreen calibration via the Control Panel in the panel's Start Center. If calibration does not resolve the issue, the touch screen overlay may be damaged and require physical replacement.

Project cannot be downloaded to the panel

Verify the connection method (USB, Ethernet, or MPI) and confirm the PC and panel are on the same network or correctly wired. Check that the WinCC flexible version matches the panel firmware version.

Update the panel firmware to match the WinCC flexible version being used, or use a compatible version of WinCC flexible. Ensure the panel is in transfer mode before initiating the download. Try an alternative connection method if one interface is not functioning.

Panel repeatedly restarts or shows a watchdog reset message

This may indicate a corrupted project file, a firmware issue, or a hardware fault. Check whether the restart occurs immediately on power-up or only during runtime operation.

Re-download a known-good project to the panel. If the issue persists, perform a firmware update using the correct firmware version for the OP 177B. If hardware fault is suspected, the unit should be inspected and repaired by a qualified technician.

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