Siemens 6AV6355-1CA47-7CK1 OP 177B

€ 461,91

SKU: 6AV6355-1CA47-7CK1 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7CK1 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 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 family, it integrates seamlessly into Siemens automation environments and supports a wide range of PLC connectivity options.

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 network architectures. It is configured using WinCC flexible engineering software and supports scripting, alarm management, recipe handling, and trend displays. The panel includes an integrated USB interface for data transfer and backup, and operates on a 24 V DC supply with a robust industrial-grade housing suited for panel mounting.

The OP 177B is widely deployed in manufacturing, automotive, food and beverage, and process industries where a reliable, mid-range operator panel is required at the machine level. Its combination of key-based and touch operation makes it suitable for environments where precise input control is necessary. The panel is compatible with SIMATIC S7-200, S7-300, S7-400, and other third-party controllers via configurable communication drivers.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Display Resolution	320 x 240 pixels (QVGA)
Touch Technology	Resistive touch screen with function keys
Input/Operating Voltage	24 V DC
Power Consumption	Max. 10 W
Communication Interface	MPI/PROFIBUS DP, RS-422/RS-485, USB, Ethernet (RJ45)
Memory	4 MB user memory
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 & 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. Verify PLC address settings and communication parameters in WinCC flexible. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Timeout error on the communication channel. The HMI did not receive a response from the PLC within the configured timeout period.
Increase the communication timeout value in the project settings. Check for cable faults or excessive network load. Verify the PLC program is not blocking communication.
Event ID: 20000: Project download error. A fault occurred during the transfer of the HMI project from the engineering PC to the panel.
Check the USB or Ethernet connection between the engineering PC and the panel. Ensure WinCC flexible version is compatible with the panel firmware. Retry the download after restarting both devices.
Event ID: 40000: System memory low. The available user memory on the HMI panel is insufficient for the current project or runtime data.
Reduce the project size by optimizing graphics, alarm lists, or recipe data. Delete unused data records from the panel memory. Consider archiving data to an external USB device.
Event ID: 50000: Firmware update error. The firmware update process was interrupted or failed to complete successfully.
Restart the panel and attempt the firmware update again using the correct firmware version for this panel type. Ensure stable power supply during the update process.
Event ID: 70000: Tag read/write error. The HMI was unable to read from or write to a configured PLC tag.
Verify the tag address and data type configuration in WinCC flexible. Check that the corresponding PLC data block or memory area exists and is accessible. Confirm PLC is not in STOP mode.
Event ID: 80000: Recipe data error. A fault occurred when reading or writing recipe data, possibly due to a mismatch between the recipe structure and the PLC data area.
Check recipe configuration in WinCC flexible for correct tag mapping and data types. Verify that the PLC data block assigned to the recipe is correctly structured and accessible.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1CA47-7CK1) support?

The OP 177B supports MPI/PROFIBUS DP, RS-422/RS-485 serial communication, USB, and Ethernet (RJ45). This allows connectivity to a wide range of Siemens and third-party PLCs.

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

The OP 177B is configured using Siemens WinCC flexible. The project is then transferred to the panel via USB or Ethernet connection.

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

Yes, the OP 177B is fully compatible with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It also supports S7-200 via RS-485 and can connect to third-party controllers using configurable communication drivers.

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

The front panel of the OP 177B carries an IP65 protection rating, making it suitable for panel-mount installations in environments with dust and water spray exposure.

What is the operating voltage of the 6AV6355-1CA47-7CK1?

The panel operates on a 24 V DC supply. Ensure the power supply is within the specified tolerance range to guarantee reliable operation.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for blown internal fuse or wiring fault at the terminal block.

Restore correct 24 V DC supply within specified tolerance. If supply is correct and display remains blank, the internal power supply board or backlight inverter may require replacement.

HMI panel fails to communicate with the PLC

Check the MPI/PROFIBUS DP or Ethernet cable for physical damage. Verify the bus address and baud rate settings on both the HMI and PLC match the project configuration in WinCC flexible.

Replace damaged cables, correct address or baud rate mismatches in the project, and re-download the project to the panel. Ensure terminating resistors are correctly placed on the PROFIBUS network.

Touchscreen does not respond or responds inaccurately

Check for physical damage or contamination on the touch surface. Attempt a touchscreen recalibration from the panel's Start Center or Control Panel menu.

Clean the touch surface with a soft, dry cloth. Perform touchscreen calibration via the panel's system settings. If calibration fails repeatedly, the touch foil or controller board may need replacement.

Project cannot be downloaded to the panel

Verify the USB or Ethernet connection between the engineering PC and the panel. Confirm the WinCC flexible version is compatible with the panel firmware version.

Update the panel firmware to match the WinCC flexible project version. Use the correct transfer cable and ensure the panel is in Transfer mode before initiating the download.

Panel repeatedly restarts or shows a watchdog reset message

Check for unstable 24 V DC power supply with voltage drops or ripple. Inspect the project for software loops or memory overload conditions that may trigger the watchdog.

Stabilize the power supply and ensure it meets the panel's current requirements. Review and optimize the WinCC flexible project to reduce memory usage. If the issue persists, a hardware fault on the main board may require professional repair.

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