Siemens 6AV6355-1AA47-7CC1 OP 177B

€ 3.495,00

SKU: 6AV6355-1AA47-7CC1 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1AA47-7CC1 is an Operator Panel (OP 177B) belonging to the SIMATIC HMI series, designed for machine-level visualization and operator control in industrial automation environments. This unit is part of the OP 177B product family, which offers a compact and robust panel solution for mid-range HMI applications. It is configured for operation with Siemens SIMATIC controllers and supports a wide range of communication interfaces for seamless integration into existing automation architectures.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels (QVGA) and supports 256 colors, providing clear visualization of process data and operator interfaces. The panel includes both a touch screen and membrane keypad for flexible operator input. It is equipped with PROFIBUS DP and MPI communication interfaces, enabling direct connection to SIMATIC S7 PLCs. The unit operates on a 24 V DC supply and offers a flash memory configuration for project storage, along with a USB interface for data transfer and project download.

The OP 177B is widely used in manufacturing, process automation, and machine building industries where a reliable and compact HMI solution is required. It is particularly suited for applications such as packaging machinery, conveyor systems, and general-purpose machine control where mid-range visualization capability is needed. The panel's compatibility with the SIMATIC controller family and its robust construction make it appropriate for demanding industrial environments.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Type	STN color LCD
Display Colors	256 colors
Touch Technology	Touch screen and membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	PROFIBUS DP, MPI, RS-422/485
USB Interface	USB Type A (host)
Memory	Flash memory for project storage
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP/Protection Rating	IP65 (front panel)
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI OP 177B

Common Error Codes and System Events

Event ID: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been lost.
Check PROFIBUS/MPI cable connections and termination resistors. Verify the PLC address and baud rate settings match the HMI project configuration. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to PLC interrupted during operation. The HMI panel has lost communication with the configured controller.
Inspect cable integrity and connector pins. Check for electromagnetic interference sources near the communication cable. Restart both the HMI panel and the PLC if the connection is not restored automatically.
Event ID: 20000: Project download error. The transfer of the HMI project to the panel has failed or been interrupted.
Verify the transfer cable or USB connection is secure. Ensure the panel is in Transfer mode before initiating download. Check that the WinCC flexible project version is compatible with the OP 177B firmware version.
Event ID: 40000: System memory low. Available memory on the panel for runtime operation is insufficient.
Reduce the number of active alarms or data records stored on the device. Archive or delete old log files. Consider optimizing the HMI project to reduce memory usage.
Event ID: 50000: Firmware update error. The firmware update process on the panel has failed or been interrupted.
Restart the firmware update procedure using ProSave or WinCC flexible. Ensure the correct firmware version for the OP 177B is used and that the power supply is stable during the update process.
Event ID: 70000: Tag read/write error. The HMI panel cannot read from or write to a configured PLC tag.
Verify the tag address in the HMI project matches the actual PLC data block or memory area. Check PLC program for any access protection on the relevant data areas. Re-download the project if tag configuration has changed.
Event ID: 80000: Backup/restore error. The backup or restore operation of the panel project or settings has failed.
Check the USB storage device for sufficient free space and correct formatting (FAT32). Retry the backup or restore operation. Ensure the panel firmware version is compatible with the backup file being restored.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1AA47-7CC1) support?

The OP 177B supports PROFIBUS DP and MPI interfaces for connection to SIMATIC S7 PLCs, as well as an RS-422/485 serial interface. A USB Type A port is also available for project transfer and data exchange.

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

The OP 177B is configured using Siemens WinCC flexible software. Projects created in WinCC flexible are downloaded to the panel via USB or the communication interface.

Is the OP 177B compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the OP 177B is designed for direct integration with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP interfaces, and can also communicate with S7-200 PLCs via the RS-422/485 port.

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

The front panel of the OP 177B is rated IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for installation in industrial control cabinets and machine panels.

Can the OP 177B be used as a replacement for older Siemens OP panels?

The OP 177B is designed as a successor to earlier SIMATIC HMI operator panels such as the OP 17, and existing projects can often be migrated using the WinCC flexible migration tool, though hardware cutout dimensions should be verified before installation.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's 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 cannot establish communication with the PLC

Verify the PROFIBUS or MPI cable is correctly connected and terminated at both ends. Check the bus address configured in the HMI project matches the physical address set on the panel. Use a bus diagnostic tool to check for bus errors.

Correct any address mismatches in the WinCC flexible project. Replace damaged cables or connectors. Ensure termination resistors are installed only at the physical ends of the bus segment.

Touchscreen does not respond or responds inaccurately to input

Check for physical damage or contamination on the touch surface. Attempt to recalibrate the touchscreen through the panel's system settings menu. Verify that the correct touch driver is active in the firmware.

Clean the touch surface with a soft, dry cloth. Perform a touchscreen calibration via the Control Panel in the panel's Start Center. If calibration does not resolve the issue, the touch overlay may require replacement.

Project cannot be downloaded to the panel

Confirm the panel is set to Transfer mode. Check the USB cable or PROFIBUS/MPI connection between the engineering PC and the panel. Verify that the WinCC flexible project version is compatible with the installed panel firmware.

Switch the panel to Transfer mode via the Start Center menu. Use a known-good USB cable. Update the panel firmware using ProSave if a version mismatch is detected, then retry the project download.

Panel displays repeated system alarms or event messages during operation

Review the alarm log on the panel to identify the specific event IDs being generated. Cross-reference the event IDs with the WinCC flexible system event documentation. Check PLC communication status and tag configuration.

Address the root cause indicated by the specific event ID, such as correcting communication settings or resolving tag address errors. Clear the alarm log after resolving the underlying issue and monitor for recurrence.

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