Siemens 6AV6355-3DA00-0BF3 OP 77B

€ 1.385,00

SKU: 6AV6355-3DA00-0BF3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-3DA00-0BF3 is an OP 77B operator panel belonging to the SIMATIC HMI Basic Panels product family. This unit is a compact, text-based operator panel designed for straightforward machine-level human-machine interface tasks, offering a monochrome display for status monitoring and parameter input. It is part of Siemens' established line of Basic Panels intended for cost-effective HMI solutions in simple automation environments.

The OP 77B features a 4-line STN monochrome LCD display capable of showing text and basic graphics, with a membrane keypad for operator input. It supports MPI and PROFIBUS DP communication interfaces, enabling direct integration with SIMATIC S7-200, S7-300, and S7-400 PLCs. The panel is configured using WinCC flexible software and offers a compact, panel-mount design with an IP65 protection rating on the front face, making it suitable for industrial enclosure mounting.

The OP 77B is commonly deployed in manufacturing machinery, conveyor systems, packaging equipment, and process control panels where basic operator interaction such as setpoint entry, alarm acknowledgment, and status display is required. Its compatibility with the SIMATIC S7 controller family and support for PROFIBUS DP makes it a practical choice for retrofit and new installations in discrete manufacturing and light process industries.

Technical Specifications

Display Type	STN monochrome LCD
Display Lines	4 lines of text
Communication Interface	MPI, PROFIBUS DP
Input/Operating Voltage	24 V DC
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Operating Temperature	0 °C to 50 °C
Storage Temperature	-20 °C to 60 °C
Relative Humidity	10 % to 90 % (non-condensing)
Configuration Software	WinCC flexible 2008 or later
Mounting	Panel mount
Certifications	CE, UL
PLC Compatibility	SIMATIC S7-200, S7-300, S7-400

Common Error Codes & System Events

Event ID: 1000: Communication error between the OP 77B and the connected PLC. The panel cannot establish or maintain a connection to the controller.
Check MPI or 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: 1003: Configured PLC address not found on the bus. The panel is unable to locate the target controller at the specified network address.
Verify the PLC station address in the WinCC flexible project matches the physical PLC address setting. Check bus cable integrity and termination.
Event ID: 10000: Project download error. A fault occurred during the transfer of the WinCC flexible project to the panel.
Check the PC-to-panel transfer cable and connection. Ensure the panel is in transfer mode before initiating the download. Retry the download from WinCC flexible.
Event ID: 10001: Insufficient memory on the panel to store the downloaded project.
Reduce the project size by removing unused screens, tags, or graphics. Ensure the project is compiled without errors before transfer.
Event ID: 20000: System startup error. The panel encountered a fault during the boot sequence.
Perform a factory reset by holding the appropriate key combination during power-up. If the fault persists, the internal flash memory or firmware may be corrupted and the unit may require service.
Event ID: 40000: Tag read/write error. The panel was unable to read from or write to a configured PLC tag.
Verify the tag address in the WinCC flexible project is correct and matches the PLC data block or memory area. Check that the PLC program has not changed the relevant data structure.

Frequently Asked Questions

Which PLCs are compatible with the OP 77B?

The OP 77B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It can also communicate with certain third-party controllers supported by WinCC flexible drivers.

What software is used to configure the OP 77B?

The OP 77B is configured using Siemens WinCC flexible 2008 or a compatible version. Projects are downloaded to the panel via a PC adapter cable connected to the MPI interface.

What is the supply voltage for the 6AV6355-3DA00-0BF3?

The panel operates on a 24 V DC supply voltage, which is the standard supply for SIMATIC HMI Basic Panels.

What is the front panel protection rating of the OP 77B?

The front face of the OP 77B carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets when correctly installed in a panel cutout.

Can the OP 77B display graphics or only text?

The OP 77B is primarily a text-based operator panel. Its monochrome STN LCD is capable of displaying text across four lines, with limited support for simple graphical elements within the WinCC flexible environment.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel's power connector. Check for blown fuses or wiring faults in the control cabinet supply circuit.

Restore the correct 24 V DC supply. If the supply is confirmed good and the display remains blank, the internal power supply or LCD backlight may have failed, requiring panel repair or replacement.

Panel shows 'No connection to PLC' message continuously

Check the MPI or PROFIBUS DP cable between the panel and PLC. Verify bus termination at both ends of the cable and confirm the PLC address configured in WinCC flexible matches the physical PLC setting.

Replace or reseat the communication cable. Correct any address mismatches in the WinCC flexible project and re-download the project to the panel. Ensure bus termination resistors are correctly installed.

Keypad buttons are unresponsive or intermittently responsive

Inspect the membrane keypad for physical damage, contamination, or wear. Test each key systematically to identify whether the fault is isolated to specific keys or affects the entire keypad.

Clean the keypad surface with a dry cloth. If keys remain unresponsive, the membrane keypad assembly may be worn or damaged and will require replacement as a service part.

Project download fails or times out during transfer from PC

Verify the panel is set to transfer mode before initiating the download. Check the PC adapter cable connection to the MPI port and confirm the correct COM port and transfer speed are selected in WinCC flexible.

Set the panel to transfer mode, select the correct interface settings in WinCC flexible, and retry the download. Replace the PC adapter cable if communication cannot be established.

Alarm messages are not displayed on the panel

Check the alarm configuration in the WinCC flexible project to confirm alarm tags are correctly mapped to PLC bit addresses. Verify the PLC program is setting the correct alarm bits.

Correct any tag address mismatches in the WinCC flexible alarm configuration and re-download the project. Confirm the PLC logic is functioning as intended by monitoring the relevant memory bits online.

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