Siemens 6AV6344-2AD34-0CG6 OP177B

€ 1.995,00

SKU: 6AV6344-2AD34-0CG6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6344-2AD34-0CG6 is an OP177B operator panel belonging to the SIMATIC HMI series, designed for machine-level human-machine interface applications. This unit provides a monochrome display with keypad-based operation and is part of Siemens' mid-range HMI portfolio. It is engineered for reliable process visualization and operator control in industrial environments.

The OP177B features a 5.7-inch STN monochrome display with a resolution of 320 x 240 pixels and supports up to 4 gray scales. It is equipped with MPI/PROFIBUS DP and RS-422/RS-485 interfaces for PLC connectivity, along with a USB port for project transfer and data backup. The panel operates on 24 V DC supply voltage and supports configuration via Siemens WinCC flexible software. It offers an operating temperature range of 0 to 50 degrees Celsius and carries an IP65 protection rating on the front face.

The OP177B is widely deployed in manufacturing, automotive, food and beverage, and packaging industries where robust keypad-operated HMI panels are preferred over touchscreen variants. Its compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it a versatile choice for both new installations and system upgrades. The panel is particularly suited for environments where gloved operation or high-vibration conditions make keypad input more practical than touch operation.

Technical Specifications

Display Size	5.7 inch
Display Type	STN monochrome
Display Resolution	320 x 240 pixels
Display Colors	4 gray scales
Input/Operating Voltage	24 V DC
Power Consumption	Max. 15 W
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485, USB
Operating Temperature	0 to 50 °C
Storage Temperature	-20 to 60 °C
Relative Humidity	10 to 90% (non-condensing)
IP/Protection Rating	IP65 (front), IP20 (rear)
Mounting	Panel mounting
Configuration Software	WinCC flexible 2008 or higher
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP177B

Common Error Codes & System Events

Event ID: 10000: Configuration error detected during startup; the loaded project is incompatible with the panel firmware version.
Re-transfer a compatible project using WinCC flexible. Ensure firmware and project versions match.
Event ID: 20000: Communication link to the PLC has been interrupted 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: 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 runtime memory is insufficient for the current project.
Reduce project size by removing unused screens or tags. Consider upgrading to a panel with greater memory capacity.
Event ID: 60000: Internal device error or hardware fault detected during self-test.
Perform a panel restart. If the error persists, back up the project and perform a factory reset. Contact Siemens support if unresolved.
Event ID: 70000: USB transfer error; data transfer via USB port failed or was interrupted.
Check USB cable integrity and ensure the USB device is properly formatted. Retry the transfer and avoid disconnecting during operation.
Event ID: 80000: Alarm buffer overflow; the number of pending alarms exceeds the buffer capacity.
Acknowledge and clear active alarms. Review alarm configuration in WinCC flexible to reduce simultaneous alarm triggers.

Frequently Asked Questions

Which PLCs are compatible with the OP177B panel?

The OP177B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It also supports communication with other Siemens controllers through RS-422/RS-485 serial connections.

What software is required to configure the 6AV6344-2AD34-0CG6?

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

Does the OP177B support touchscreen input?

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

What is the supply voltage for this panel?

The OP177B operates on a 24 V DC supply voltage. Ensure the power source is within the specified tolerance range to prevent operational faults.

What is the front panel protection rating of the 6AV6344-2AD34-0CG6?

The front face of the OP177B carries an IP65 protection rating, making it suitable for environments where dust and water jets may be present.

Troubleshooting

Display remains blank after power on

Measure 24 V DC at the power supply terminals of the panel. Check for blown internal fuse or wiring fault at the connector.

Restore correct 24 V DC supply. Replace any blown fuse with the correct rating. If the display backlight has failed, the backlight unit or the panel itself may require replacement.

No communication between OP177B and PLC

Verify MPI or PROFIBUS DP cable connections at both the panel and PLC ends. Check bus termination at both ends of the network and confirm the panel address in the project matches the physical setting.

Replace or reseat the communication cable. Correct bus termination by enabling termination resistors at both network ends. Update the HMI project address settings in WinCC flexible and re-transfer the project.

Panel repeatedly restarts or enters bootloader mode

This may indicate a corrupted project or firmware. Check if the panel displays a bootloader screen on startup, which suggests the operating system or project file is damaged.

Re-transfer the project via USB using WinCC flexible. If the issue persists, perform a firmware update using the Siemens ProSave tool to restore the panel operating system.

Keys on the keypad are unresponsive or produce incorrect input

Inspect the keypad membrane for physical damage, contamination, or wear. Test individual keys in the panel's service menu if accessible.

Clean the keypad surface with a dry cloth. If keys are physically damaged or the membrane is worn, replace the keypad membrane assembly. Ensure no external pressure is being applied to the panel front.

Project transfer via USB fails or is not recognized

Check that the USB cable is functional and that the USB storage device is formatted correctly (FAT32). Verify that the panel is in transfer mode before initiating the download.

Use a known-good USB cable and a freshly formatted FAT32 USB device. Place the panel in transfer mode via the Start Center menu before initiating the project transfer from WinCC flexible.

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