Siemens 6AV6355-1DA00-0DL6 OP 77B

€ 1.994,87

SKU: 6AV6355-1DA00-0DL6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1DA00-0DL6 is the OP 77B operator panel, part of the SIMATIC HMI Basic Panels product family from Siemens. This compact panel-mount operator panel is designed for straightforward machine-level human-machine interface tasks, providing a text-based display for process visualization and operator control. It belongs to the SIMATIC HMI portfolio and is intended for use with SIMATIC S7 PLCs and other compatible controllers.

The OP 77B features a monochrome STN LCD display with a resolution of 160 x 32 pixels, capable of displaying up to 4 lines of text. It is equipped with a membrane keypad for operator input, including function keys and navigation keys. Communication is handled via an MPI/PROFIBUS DP interface, enabling direct connection to SIMATIC S7-200, S7-300, and S7-400 PLCs. The unit operates on a 24 V DC supply and supports configuration via SIMATIC WinCC flexible software. It offers a compact and robust construction suitable for panel mounting with an IP65 protection rating on the front face.

The OP 77B is widely used in manufacturing, process automation, and machine building applications where a cost-effective, reliable text-based operator interface is required. It is particularly suited for simple control tasks such as displaying process values, entering setpoints, and acknowledging alarms on standalone machines or small automation systems. Industries such as packaging, food and beverage, and general machine manufacturing commonly deploy this panel for local operator interaction at the machine level.

Technical Specifications

Display Type	Monochrome STN LCD
Display Resolution	160 x 32 pixels
Display Lines	4 lines of text
Input/Operating Voltage	24 V DC
Communication Interface	MPI / PROFIBUS DP
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)
Mounting	Panel mounting
Configuration Software	SIMATIC WinCC flexible
PLC Compatibility	SIMATIC S7-200, S7-300, S7-400
Certifications	CE, UL

Common Error Codes and System Events

Event ID: 10000: Communication error between the OP 77B and the connected PLC. The panel cannot establish or maintain a connection to the controller.
Check MPI/PROFIBUS DP cable connections and termination resistors. Verify the PLC address settings match the configuration in WinCC flexible. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Connection to the PLC was interrupted during operation.
Inspect the communication cable for damage or loose connectors. Check bus termination and cable shielding. Restart the panel and PLC if the connection is not restored automatically.
Event ID: 20000: Configuration or project data error detected on the panel. The loaded project may be corrupt or incompatible.
Re-transfer the project from WinCC flexible to the panel. Verify the project was compiled without errors before transfer.
Event ID: 40000: Operating system or firmware error on the panel.
Perform a panel reset. If the fault persists, update the panel firmware using the appropriate Siemens ProSave tool.
Event ID: 50000: Alarm buffer overflow. The number of pending alarms exceeds the panel buffer capacity.
Acknowledge and clear existing alarms. Review the alarm configuration in WinCC flexible to reduce unnecessary alarm generation.
Event ID: 60000: Power supply voltage out of tolerance. The 24 V DC supply is outside the acceptable operating range.
Measure the supply voltage at the panel connector. Ensure the power supply output is within the 20.4 V DC to 28.8 V DC range. Replace or adjust the power supply as needed.
Event ID: 70000: Internal hardware fault detected on the operator panel.
Power cycle the panel. If the fault persists, the panel may require repair or replacement of internal components.

Frequently Asked Questions

What communication interfaces does the OP 77B support?

The OP 77B supports MPI and PROFIBUS DP interfaces, allowing direct connection to SIMATIC S7-200, S7-300, and S7-400 PLCs without an additional communication module.

What software is used to configure the OP 77B?

The OP 77B is configured using Siemens SIMATIC WinCC flexible software. Projects are created on a PC and transferred to the panel via the MPI interface or a dedicated data cable.

What is the supply voltage for the 6AV6355-1DA00-0DL6?

The panel requires a 24 V DC supply voltage, with an acceptable operating range of approximately 20.4 V DC to 28.8 V DC.

What is the IP protection rating of the OP 77B?

The front face of the OP 77B carries an IP65 protection rating, making it resistant to dust and water jets. The rear of the unit is rated IP20.

Is the OP 77B compatible with SIMATIC S7-1200 or S7-1500 PLCs?

The OP 77B is primarily designed for use with S7-200, S7-300, and S7-400 PLCs via MPI/PROFIBUS DP. Compatibility with S7-1200 or S7-1500 is not standard and would require careful verification of communication settings and WinCC flexible driver support.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the panel power connector using a multimeter. Verify the supply is within the 20.4 V to 28.8 V DC range. Inspect the connector for loose or reversed wiring.

Correct the supply voltage or rewire the power connector. If the supply is correct and the display remains blank, the internal power supply or display backlight may be faulty and the unit may require repair.

Panel displays communication error and cannot connect to PLC

Verify the MPI or PROFIBUS DP cable is securely connected at both the panel and PLC ends. Check that bus termination resistors are correctly placed at both ends of the bus. Confirm the PLC node address in WinCC flexible matches the actual PLC configuration.

Replace or reseat the communication cable. Correct the bus termination. Update the panel project with the correct PLC address and re-transfer the configuration using WinCC flexible.

Project transfer from WinCC flexible fails

Check the PC-to-panel communication cable and the selected transfer interface in WinCC flexible. Ensure the panel is in transfer mode, which can be activated from the panel start screen or loader menu.

Place the panel in transfer mode manually via the loader menu. Verify the correct COM port or MPI adapter is selected in WinCC flexible transfer settings. Retry the transfer after confirming cable integrity.

Function keys do not respond to presses

Inspect the membrane keypad for physical damage, contamination, or deformation. Verify the project configuration assigns functions to the keys in WinCC flexible.

Clean the keypad surface. If keys are physically damaged or unresponsive due to membrane failure, the keypad assembly requires replacement. Confirm key assignments are correctly configured in the project.

Panel restarts repeatedly or enters a boot loop

Check the supply voltage stability under load. Inspect for any firmware corruption by observing the boot sequence messages on the display. Attempt to access the loader menu during startup.

Stabilize the power supply. Use the Siemens ProSave tool to restore or update the panel firmware via the MPI interface. If firmware restoration fails, the panel may require service or replacement of the main board.

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