Siemens 6AV6355-1AA47-7CH0 OP 177B

€ 1.995,00

SKU: 6AV6355-1AA47-7CH0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1AA47-7CH0 is an operator panel belonging to the SIMATIC HMI OP 177B series, manufactured by Siemens as part of the SIMATIC HMI product line. This unit is a compact operator panel designed for machine-level visualization and control tasks, offering a monochrome or color display depending on the variant. It is intended for use as a human-machine interface in conjunction with Siemens SIMATIC PLCs and other compatible controllers.

The OP 177B features a 5.7-inch STN display and supports both MPI/PROFIBUS DP and Ethernet communication interfaces, enabling flexible integration into existing automation networks. The panel is configured using WinCC flexible engineering software and supports recipe management, alarm logging, and trend display functions. It provides a membrane keypad for operator input and includes a USB interface for data transfer and project download. The unit operates on a 24 V DC supply and is built to meet the demands of industrial environments with an IP65 protection rating on the front face.

The OP 177B is widely deployed in manufacturing, automotive, food and beverage, and packaging industries where a robust and reliable operator interface is required at the machine level. Its compatibility with SIMATIC S7-300 and S7-400 PLCs makes it a common choice for machine builders and system integrators working within the Siemens automation ecosystem. The panel's compact form factor and broad communication support make it suitable for both new installations and retrofitting existing control panels.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Input Voltage	24 V DC
Power Consumption	Max. 10 W
IP Protection Rating (Front)	IP65
IP Protection Rating (Rear)	IP20
Communication Interface	MPI/PROFIBUS DP, Ethernet (RJ45), USB
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	WinCC flexible 2005 or higher
Certifications	CE, UL, cULus

Common Error Codes & System Events

Event ID: 10000: Connection to the PLC could not be established or was interrupted during operation.
Check MPI/PROFIBUS or Ethernet cable connections and verify PLC address settings in the project configuration. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Communication timeout: no response received from the configured controller within the expected time.
Verify network cabling, check for address conflicts, and confirm the communication parameters (baud rate, station address) match between the OP 177B and the PLC.
Event ID: 20000: Project download failed or project data on the panel is corrupted.
Re-download the project using WinCC flexible via USB or Ethernet. Ensure the project version is compatible with the panel firmware version.
Event ID: 40000: Internal device error or hardware fault detected during self-test at startup.
Perform a panel reset. If the fault persists, check the 24 V DC supply voltage and inspect the unit for physical damage. A hardware repair or replacement may be required.
Event ID: 50000: Alarm buffer overflow: the number of pending alarms has exceeded the panel's buffer capacity.
Acknowledge and clear existing alarms. Review the alarm configuration in WinCC flexible to reduce unnecessary alarm triggers or increase the alarm buffer size.
Event ID: 60000: Recipe data error: recipe records could not be read from or written to storage.
Check available memory on the panel. Re-download recipe data from the engineering station and verify recipe configuration in WinCC flexible.
Event ID: 70000: Firmware update failed or firmware version mismatch detected.
Re-initiate the firmware update using ProSave or WinCC flexible. Ensure the correct firmware version for the 6AV6355-1AA47-7CH0 is used and that the power supply remains stable during the update process.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1AA47-7CH0) support?

The OP 177B supports MPI/PROFIBUS DP and Ethernet (RJ45) for PLC communication, as well as a USB interface for project download and data transfer.

Which PLCs are compatible with this operator panel?

The OP 177B is compatible with Siemens SIMATIC S7-300, S7-400, and S7-200 PLCs, as well as other controllers supported via the WinCC flexible driver library.

What software is required to configure and program the OP 177B?

The panel is configured using Siemens WinCC flexible 2005 or a later version. Projects are downloaded to the panel via USB or Ethernet connection.

What is the front panel protection rating of the 6AV6355-1AA47-7CH0?

The front face of the OP 177B carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets, suitable for industrial panel mounting.

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

Yes, the OP 177B is designed to be a successor to earlier SIMATIC HMI operator panels such as the OP 17, and WinCC flexible supports migration of projects from older ProTool-based configurations.

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.

Correct any wiring errors or supply voltage issues. If the supply is confirmed good and the display remains blank, the internal power supply board or backlight may be faulty and the unit should be sent for repair.

Panel fails to communicate with the PLC

Verify the MPI/PROFIBUS or Ethernet cable is correctly connected and undamaged. Check that the station address and baud rate configured on the panel match those set on the PLC.

Replace the communication cable if damaged. Correct any address or baud rate mismatches in the WinCC flexible project and re-download. Ensure no address conflicts exist on the network.

Touchscreen or keypad inputs are not responding correctly

Check for physical damage to the membrane keypad. Verify that the panel is not in transfer mode, which disables normal operation. Check for any active screen protection or login requirement.

If the keypad is physically damaged, the front panel assembly requires replacement. Exit transfer mode by cycling power or using the appropriate key combination. Disable screen protection if it is blocking input.

Project download via USB fails or is not recognized

Check that the USB cable is functional and that the correct USB driver for the OP 177B is installed on the engineering PC. Verify the panel is in transfer mode before initiating the download.

Replace the USB cable and reinstall the USB driver from the WinCC flexible installation package. Place the panel in transfer mode manually before starting the download from WinCC flexible.

Panel displays 'No project' message after startup

This indicates that no valid project is stored in the panel memory, or the project data has been lost due to a firmware update or memory fault.

Re-download the project from the WinCC flexible engineering station via USB or Ethernet. If the panel repeatedly loses its project, the internal flash memory may be faulty and the unit should be inspected for hardware faults.

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