Siemens 6AV6355-1CA47-7BE2 OP 177B

€ 1.861,89

SKU: 6AV6355-1CA47-7BE2 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7BE2 is an operator panel belonging to the SIMATIC OP 177B series, part of Siemens' established SIMATIC HMI product line. This unit provides a combined touch and key-operated interface designed for machine-level visualization and operator control tasks. It is a mid-range panel PC replacement offering a compact form factor suitable for panel door or console mounting.

The OP 177B features a 5.7-inch STN color display with a resolution of 320 x 240 pixels (QVGA), supporting up to 256 colors. It is equipped with both a resistive touchscreen and membrane function keys, providing flexible operator input options. The panel includes PROFIBUS DP and MPI interfaces as standard communication ports, along with an RS-422/RS-485 serial interface and a USB port for data transfer and peripheral connectivity. It operates on a 24 V DC supply and runs the Windows CE operating system, supporting configuration via Siemens WinCC flexible software.

The SIMATIC OP 177B is widely deployed in manufacturing automation, machine tool control, and process plant environments where a reliable, mid-range HMI is required. Its compatibility with SIMATIC S7-200, S7-300, and S7-400 PLCs makes it a versatile choice for integration into existing Siemens automation architectures. The panel is suited for industries including automotive, food and beverage, packaging machinery, and general factory automation.

Technical Specifications

Display Size	5.7 inch
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Display Type	STN color LCD
Touch Technology	Resistive touchscreen
Input Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	PROFIBUS DP/MPI, RS-422/RS-485, USB
Operating System	Windows CE
Configuration Software	WinCC flexible 2008 or later
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
Mounting	Panel mounting
Certifications	CE, UL, cULus

Common Error Codes and System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC. The configured connection cannot be established.
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 powered and in RUN mode.
Event ID: 10001: Connection to PLC interrupted during operation. The HMI lost communication with the controller.
Inspect cable integrity and connector seating. Check for electromagnetic interference sources near the communication cable. Restart both the HMI and PLC if the connection does not recover automatically.
Event ID: 20000: Project download error. Transfer of the WinCC flexible project to the panel failed.
Verify the transfer cable or network connection between the engineering PC and the HMI. Ensure the panel is set to Transfer mode before initiating the download. Check that the WinCC flexible project version is compatible with the panel firmware.
Event ID: 40000: System memory low. Available RAM on the HMI panel is insufficient for current operations.
Reduce the number of active screens or logged data records. Archive or delete unnecessary data from the panel memory. Consider optimizing the project to reduce memory usage.
Event ID: 50000: Internal device error. A hardware or firmware fault has been detected within the panel.
Perform a controlled restart of the panel. If the error persists after restart, update the panel firmware to the latest version. If the fault continues, the panel may require repair or replacement.
Event ID: 60000: Configuration error detected. The loaded project contains settings incompatible with this panel variant.
Reload the correct WinCC flexible project configured specifically for the OP 177B. Verify panel type selection in the WinCC flexible project settings matches the installed hardware.
Event ID: 70000: Tag update error. One or more process tags could not be read or written within the configured cycle time.
Check PLC program to ensure the configured tag addresses exist and are accessible. Increase the tag update cycle time in the HMI project if the PLC scan cycle is slow. Verify data type compatibility between HMI tags and PLC variables.

Frequently Asked Questions

Which PLCs are compatible with the Siemens OP 177B (6AV6355-1CA47-7BE2)?

The OP 177B is compatible with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It also supports communication with S7-1200 and third-party controllers via the RS-422/RS-485 serial interface using appropriate drivers configured in WinCC flexible.

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

The OP 177B is configured using Siemens WinCC flexible 2008 or a compatible version. Projects are transferred to the panel via USB or through the PROFIBUS/MPI interface from the engineering PC.

Does the OP 177B support both touch and key input?

Yes, the OP 177B features a resistive touchscreen combined with physical membrane function keys, allowing operators to interact with the panel using either input method.

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 installation in environments where dust and water spray may be present.

What operating voltage does the 6AV6355-1CA47-7BE2 require?

The panel operates on a 24 V DC supply voltage, which is standard for SIMATIC HMI devices and compatible with typical industrial control cabinet power supplies.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel power connector. Check that the supply is within the specified tolerance range. Inspect the internal fuse if accessible.

Ensure the power supply output is stable at 24 V DC and capable of supplying sufficient current. Replace any blown fuse with the correct rating. If the backlight has failed, the panel may require backlight or display assembly replacement.

HMI panel does not communicate with the PLC

Verify the PROFIBUS or MPI cable is correctly connected and terminated at both ends. Check the bus address configured on the HMI matches the project settings. Use a PROFIBUS diagnostic tool to check bus activity.

Correct any address conflicts or termination errors. Replace damaged cables or connectors. Ensure the PLC is in RUN mode and the communication parameters in the WinCC flexible project match the physical network configuration.

Touchscreen does not respond or responds inaccurately

Check whether the touchscreen responds at all or only in certain areas. Attempt a touchscreen recalibration from the panel's Start Center or Control Panel menu. Inspect the screen surface for damage or contamination.

Perform a full touchscreen calibration using the built-in calibration utility. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the touchscreen overlay may require replacement.

Project transfer from engineering PC fails

Confirm the panel is set to Transfer mode via the Start Center. Check the USB or MPI/PROFIBUS connection between the PC and the panel. Verify the WinCC flexible project is compiled without errors before transfer.

Switch the panel to Transfer mode manually before initiating the download. Use a known-good USB cable or communication interface. Ensure the WinCC flexible software version is compatible with the panel firmware version; update firmware if necessary.

Panel repeatedly restarts or freezes during operation

Check the supply voltage for instability or voltage dips under load. Review the system event log on the panel for recorded fault events. Assess whether the issue occurs on specific screens or actions within the project.

Stabilize the power supply and add filtering if voltage ripple is detected. Optimize the HMI project to reduce processor load on complex screens. If hardware faults are logged, update the panel firmware or arrange for hardware inspection and repair.

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