Siemens 6AV6355-1GA00-0DL6 OP 77B

€ 987,43

SKU: 6AV6355-1GA00-0DL6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1GA00-0DL6 is the OP 77B operator panel, part of the SIMATIC HMI Basic Panels product family from Siemens. This compact operator panel is designed for straightforward machine-level visualization and operator control tasks in industrial automation environments. It provides a text-based display interface for monitoring process values and interacting with programmable logic controllers.

The OP 77B features a 4-line STN LCD text display capable of showing alphanumeric characters, enabling clear presentation of process data, messages, and status information. It communicates via MPI and PROFIBUS DP interfaces, allowing direct integration with SIMATIC S7-200, S7-300, and S7-400 PLCs. The panel is configured using WinCC flexible Compact or Standard engineering software and supports recipe management, alarm logging, and multilingual operation. The unit operates on a 24 V DC supply and is rated IP65 at the front face for protection against dust and water ingress.

The OP 77B is widely deployed in manufacturing, packaging, and process automation applications where a cost-effective, reliable text-based HMI solution is required. It is suited for machine-level control panels where full graphical displays are not necessary but clear operator feedback and input capability are essential. Industries such as food and beverage, automotive assembly, and general factory automation commonly use this panel for local machine interaction.

Technical Specifications

Display Type	STN LCD, text-based
Display Lines	4 lines
Characters per Line	20 characters
Input/Operating Voltage	24 V DC
Power Consumption	4.5 W
Communication Interface	MPI, PROFIBUS DP
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
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP 77B

Common Error Codes & System Events

Event ID: 10000: Connection to the PLC could not be established or was interrupted during operation.
Check MPI or PROFIBUS DP cable connections and termination resistors. Verify PLC address settings match the HMI project configuration.
Event ID: 10001: Communication timeout: no response received from the configured PLC within the expected time window.
Check network cabling, verify PLC is in RUN mode, and confirm baud rate and station address settings on both the HMI and PLC.
Event ID: 20000: Project download failed or no valid project is loaded on the device.
Re-download the project from WinCC flexible to the OP 77B. Ensure the correct communication interface and transfer settings are selected.
Event ID: 40000: Operating system or firmware error detected on the panel.
Perform a reset to factory defaults and re-download the firmware and project. If the fault persists, the panel may require servicing or replacement.
Event ID: 50000: Internal device error: hardware fault detected in the panel.
Power cycle the device. If the error recurs, the panel hardware requires inspection and likely replacement of the internal electronics.
Event ID: 60000: Configuration error: a tag or variable referenced in the project cannot be found or is incorrectly configured.
Review the project in WinCC flexible, verify all tag addresses and PLC variable mappings are correct, and re-download the project.

Frequently Asked Questions

Which PLCs are compatible with the OP 77B (6AV6355-1GA00-0DL6)?

The OP 77B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP communication interfaces. It can also communicate with S7-200 via the PPI protocol.

What software is used to configure and program the OP 77B?

The OP 77B is configured using Siemens WinCC flexible Compact or WinCC flexible Standard engineering software. Projects are downloaded to the panel via the MPI interface or a PC adapter cable.

What is the supply voltage for the 6AV6355-1GA00-0DL6?

The OP 77B operates on a 24 V DC supply voltage. This is typically provided from a dedicated SITOP or equivalent 24 V DC power supply unit.

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

The front face of the OP 77B is rated IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for installation in industrial control panel doors.

Does the OP 77B support alarm and message display?

Yes, the OP 77B supports alarm logging and message display. It can show bit-triggered and value-triggered alarms, and supports configurable alarm classes within the WinCC flexible project.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for correct polarity and verify the supply is within the specified voltage range.

Correct any wiring errors or supply voltage issues. If the supply is confirmed correct and the display remains blank, the internal power supply or display backlight may have failed and the unit requires repair or replacement.

HMI shows 'No connection to PLC' or communication error on startup

Verify the MPI or PROFIBUS DP cable is securely connected at both the HMI and PLC ends. Check that bus termination resistors are correctly placed at both ends of the network segment.

Correct cable connections and termination. Confirm that the PLC station address and baud rate configured in the HMI project match the actual PLC settings. Re-download the project if configuration changes are made.

Project download from WinCC flexible fails or transfer cannot be initiated

Check that the panel is in Transfer mode, which can be activated via the panel's Start Center or loader menu. Verify the PC adapter or MPI cable is correctly connected and the correct COM port or USB interface is selected in WinCC flexible.

Set the panel to Transfer mode manually, select the correct transfer interface in WinCC flexible, and retry the download. Update the PC adapter driver if communication is not established.

Operator keys or function keys do not respond

Check the project configuration in WinCC flexible to confirm that the function keys are assigned to the correct actions or screen navigation events. Test whether the issue affects all keys or only specific ones.

Re-download the project with corrected key assignments. If all keys are unresponsive, the keypad membrane or internal keypad PCB may be faulty and the panel should be sent for hardware repair.

Panel displays garbled characters or incorrect text on screen

This may indicate a corrupted project file on the device or a mismatch between the configured character set and the panel firmware version.

Re-download the project from WinCC flexible ensuring the correct panel type and firmware version are selected. If necessary, update the panel firmware before re-downloading the project.

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