Siemens 6AV6355-1CA47-7CD4 OP 177B

€ 3.495,00

SKU: 6AV6355-1CA47-7CD4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7CD4 is an operator panel belonging to the OP 177B series within Siemens' SIMATIC HMI product line. This unit serves as a human-machine interface device designed for machine-level visualization and control tasks. It features a color display and is part of the WinCC flexible-based panel family, offering reliable operator interaction in industrial environments.

The OP 177B panel is equipped with a 5.7-inch STN color display with a resolution of 320 x 240 pixels (QVGA), supporting up to 256 colors. It provides both MPI/PROFIBUS DP and RS-422/RS-485 serial communication interfaces, enabling integration with Siemens S7-200, S7-300, and S7-400 PLCs as well as third-party controllers. The panel includes 256 KB of user memory for project data and supports configuration via Siemens WinCC flexible 2008 or later. A USB interface is available for project transfer and data backup, and the unit operates on a 24 V DC supply voltage.

The OP 177B is widely deployed in machine building, packaging machinery, conveyor systems, and general factory automation where a compact yet capable operator interface is required. Its compatibility with the broad SIMATIC S7 controller family makes it a practical choice for OEMs and system integrators working within Siemens automation architectures. The panel's robust construction and wide operating temperature range make it suitable for demanding industrial floor environments.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Display Type	STN color LCD
Input/Operating Voltage	24 V DC
Power Consumption	Max. 8 W
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485, USB
User Memory	256 KB
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Mounting	Panel mounting
Certifications	CE, UL, cULus
Configuration Software	WinCC flexible 2008

Common Error Codes & System Events

Event ID: 10000: Configuration error detected on startup; the loaded project may be incompatible or corrupted.
Re-transfer the project from the engineering station using WinCC flexible. Verify project compatibility with the panel firmware version.
Event ID: 10001: Communication connection to the PLC has been lost or cannot be established.
Check MPI/PROFIBUS DP cable connections and termination resistors. Verify PLC address settings match the HMI project configuration.
Event ID: 20000: System memory is insufficient to load the current project.
Reduce the project size by removing unused screens or objects. Ensure the project does not exceed the 256 KB user memory limit.
Event ID: 40000: Firmware update error; the firmware transfer was interrupted or the file is invalid.
Restart the firmware update procedure using the correct firmware file for the OP 177B. Ensure stable USB connection during transfer.
Event ID: 50000: Tag address invalid; a configured tag references an address that does not exist in the connected PLC.
Review tag addresses in WinCC flexible and correct any mismatched or out-of-range PLC addresses. Re-transfer the corrected project.
Event ID: 60000: Backup/restore operation failed during project or recipe data transfer.
Check the USB storage device for errors and ensure it is formatted correctly. Retry the backup or restore operation with a verified storage medium.
Event ID: 70000: Screen object rendering error; one or more display objects cannot be shown correctly.
Check for unsupported object types in the project. Update the panel firmware to the latest version compatible with WinCC flexible 2008.

Frequently Asked Questions

Which PLCs are compatible with the OP 177B panel?

The OP 177B is compatible with Siemens S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP. It also supports communication with third-party controllers via the RS-422/RS-485 serial interface.

What software is required to configure the 6AV6355-1CA47-7CD4?

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

What is the supply voltage for this operator panel?

The OP 177B operates on a 24 V DC supply voltage. Ensure the power supply can deliver sufficient current to meet the panel's maximum 8 W power consumption.

What is the front panel protection rating of this unit?

The front panel of the OP 177B carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets when correctly installed in a panel cutout.

Does the OP 177B support recipe management?

Yes, the OP 177B supports recipe management functionality through WinCC flexible, allowing operators to store and transfer parameter sets between the HMI and the connected PLC.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the panel's power connector. Check for blown internal fuse or insufficient supply current.

Ensure the 24 V DC supply is within tolerance and can deliver the required current. If supply is confirmed good, the internal power supply board may require replacement or professional repair.

Panel cannot establish communication with the S7 PLC

Verify MPI or PROFIBUS DP cable integrity and check that bus termination resistors are correctly placed at both ends of the network. Confirm the PLC station address configured in the HMI project matches the actual PLC address.

Replace faulty cables or connectors, correct bus termination, and ensure address settings in WinCC flexible match the PLC configuration. Re-transfer the project after making corrections.

Touchscreen or function keys not responding

Check whether the panel is in transfer mode or displaying a system screen that disables normal operation. Test individual keys for physical damage or contamination.

Restart the panel and allow the project to load fully. Clean the keypad area with a dry cloth. If keys remain unresponsive, the keypad membrane or front panel assembly may need replacement.

Project transfer via USB fails repeatedly

Check the USB storage device format (must be FAT32) and verify the project file is not corrupted. Confirm the panel is in transfer mode before initiating the transfer.

Reformat the USB device to FAT32, re-export the project from WinCC flexible, and retry the transfer with the panel set to transfer mode. Try an alternative USB device if the issue persists.

Panel displays 'No project' message after startup

The internal flash memory may have lost the project due to a failed transfer or power interruption during a previous download.

Re-transfer the project from the WinCC flexible engineering station via USB or MPI connection. Ensure stable power supply during the transfer process to prevent data loss.

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