Siemens 6AV6355-1CA47-7ER6 OP 177B

€ 3.495,00

SKU: 6AV6355-1CA47-7ER6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7ER6 is an Operator Panel (OP 177B) belonging to the SIMATIC HMI series, designed for machine-level human-machine interface applications. This unit provides a monochrome or color graphical display with touch and key-based operation, serving as a compact yet capable panel for process visualization and control. As part of the SIMATIC HMI comfort and mobile panel lineage, it integrates seamlessly into Siemens automation environments.

The OP 177B features a 5.7-inch STN display with a resolution of 320 x 240 pixels and supports both MPI and PROFIBUS DP communication interfaces, enabling direct connection to SIMATIC S7 PLCs. It includes Ethernet connectivity for network integration and supports configuration via WinCC flexible engineering software. The panel offers a robust membrane keypad with function keys, providing reliable tactile input in industrial environments, and is rated for operation across a wide temperature range.

The OP 177B is widely deployed in manufacturing, automotive, food and beverage, and process industries where compact operator panels are required at the machine level. Its compatibility with SIMATIC S7-300 and S7-400 controllers makes it suitable for a broad range of machine control and monitoring applications. The panel's compact form factor and versatile communication options make it a practical choice for retrofit and new installation projects alike.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels
Display Type	STN color LCD
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
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
Series/Product Family	SIMATIC HMI OP 177B
Certifications	CE, UL, cULus
Configuration Software	WinCC flexible 2008

Common Error Codes and System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC. The connection to the controller has been interrupted or cannot be established.
Check MPI/PROFIBUS DP or Ethernet cable connections and termination resistors. Verify PLC address settings and communication parameters in WinCC flexible project match the hardware configuration.
Event ID: 10001: Connection to PLC timeout. The HMI panel did not receive a response from the controller within the configured timeout period.
Check network cabling and connector integrity. Verify PLC is in RUN mode and the configured station address is correct. Increase timeout value in the HMI project if necessary.
Event ID: 20000: Project download error. The transfer of the HMI project from the engineering PC to the panel failed.
Ensure the panel is in Transfer mode. Verify the communication interface settings on both the PC and panel match. Check that WinCC flexible version is compatible with the panel firmware version.
Event ID: 40000: Tag read/write error. The HMI panel is unable to read from or write to a configured PLC tag or data block.
Verify the tag address and data type in the WinCC flexible project match the actual PLC data structure. Check PLC program for correct DB or memory area definitions.
Event ID: 110000: System memory low. The panel's available runtime memory is insufficient to execute the current project.
Reduce the number of active screens, images, or scripts in the project. Optimize the project in WinCC flexible to reduce memory usage and re-download to the panel.
Event ID: 130000: Firmware update error. An error occurred during the firmware update process on the panel.
Restart the firmware update procedure using ProSave or WinCC flexible. Ensure the power supply is stable during the update and the correct firmware version for the OP 177B is used.
Event ID: 50000: Illegal system state detected. The panel has encountered an internal error and may restart automatically.
Perform a controlled restart of the panel. If the error persists, back up the project, perform a factory reset using the panel's Start Center, and re-download the project.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1CA47-7ER6) support?

The OP 177B supports MPI, PROFIBUS DP, and Ethernet (RJ45) interfaces, allowing direct connection to SIMATIC S7-200, S7-300, and S7-400 PLCs as well as network-based communication.

Which engineering software is used to configure the OP 177B?

The OP 177B is configured using Siemens WinCC flexible 2008 or later compatible versions. Projects are downloaded to the panel via MPI, PROFIBUS, Ethernet, or USB connection.

What is the supply voltage for the 6AV6355-1CA47-7ER6?

The panel operates on a 24 V DC supply voltage. Ensure the power source is within the specified tolerance range to prevent operational issues.

Is the OP 177B compatible with SIMATIC S7-1200 or S7-1500 PLCs?

The OP 177B is primarily designed for use with S7-200, S7-300, and S7-400 PLCs via WinCC flexible. Compatibility with S7-1200 and S7-1500 is limited and these newer controllers are better supported by TIA Portal-based HMI panels such as the KTP or Comfort series.

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

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

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check for blown internal fuse or incorrect polarity on the supply connection.

Correct the supply voltage or polarity. If the supply is confirmed good and the display remains blank, the internal power supply board or backlight inverter may require replacement or the unit may need to be sent for repair.

Panel shows 'No connection to PLC' or communication errors on screen

Check the MPI, PROFIBUS DP, or Ethernet cable between the panel and the PLC. Verify bus termination resistors are correctly placed at both ends of the PROFIBUS segment. Confirm the station address configured in the HMI project matches the physical PLC address.

Replace or reseat communication cables. Correct bus termination. Update the HMI project communication settings in WinCC flexible to match the PLC configuration and re-download the project.

Touchscreen or function keys are unresponsive

Attempt to operate the panel using both the touchscreen and the physical function keys to isolate the fault. Check for physical damage to the membrane keypad or display surface. Perform a touchscreen calibration from the panel's Start Center.

Recalibrate the touchscreen via the Start Center menu. If the membrane keypad is damaged, replace the front panel assembly. If the touchscreen remains unresponsive after calibration, the touch controller hardware may require repair or replacement.

Project transfer from PC to panel fails repeatedly

Verify the panel is set to Transfer mode via the Start Center. Check that the communication interface selected in WinCC flexible matches the physical connection being used. Confirm the PC firewall or antivirus software is not blocking the transfer.

Set the correct transfer interface on both the panel and in WinCC flexible. Disable firewall or antivirus temporarily during transfer. Ensure the WinCC flexible version is compatible with the panel firmware version; update firmware via ProSave if necessary.

Panel restarts unexpectedly or displays a system error message

Check the 24 V DC supply for voltage dips or instability using a multimeter or oscilloscope. Review the system event log accessible from the panel's Start Center for specific event IDs. Inspect the installation environment for excessive temperature or vibration.

Stabilize the power supply and ensure it meets the panel's current requirements. Address any environmental issues such as excessive heat or vibration. If the problem persists, perform a factory reset from the Start Center and re-download the project from WinCC flexible.

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