Siemens 6AV6355-1CA47-7CF1 OP 177B

€ 1.221,47

SKU: 6AV6355-1CA47-7CF1 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7CF1 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. It is part of Siemens' established SIMATIC HMI portfolio, engineered for integration into industrial control cabinets and machinery.

The OP 177B features a 5.7-inch STN display and supports both MPI/PROFIBUS DP and Ethernet (PROFINET) communication interfaces, enabling flexible integration with SIMATIC S7 PLCs and other compatible controllers. The panel is configured using WinCC flexible engineering software and supports recipe management, alarm logging, and trend display functions. It operates on 24 V DC supply and is built to withstand the demands of industrial environments, with a front panel protection rating of IP65.

The OP 177B is widely deployed in manufacturing, machine building, and process automation applications where a compact operator interface is required at the machine level. It is suitable for use with conveyor systems, packaging machinery, press lines, and general-purpose automation equipment. Its combination of key-based and touch operation makes it adaptable to environments where gloved operation or precise input is required.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Touch Technology	Touch screen and membrane keys
Input/Operating Voltage	24 V DC
Power Consumption	Max. 12 W
Communication Interface	MPI/PROFIBUS DP, Ethernet (PROFINET), RS-422/485
Configuration Software	WinCC flexible 2005 or higher
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
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 and termination resistors. Verify PLC address settings and communication parameters in WinCC flexible project match the hardware configuration.
Event ID: 10001: Connection to PLC timed out. The panel did not receive a response from the controller within the expected time window.
Verify the PLC is powered and running. Check network cabling and bus termination. Confirm the station address configured in the HMI project matches the PLC hardware address.
Event ID: 20000: Tag read error. The HMI panel was unable to read a configured tag from the PLC.
Verify the tag address exists in the PLC program and that the data block or memory area is accessible. Check for address mismatches between the HMI project and the PLC program.
Event ID: 20001: Tag write error. The HMI panel was unable to write a value to a configured PLC tag.
Confirm the PLC is in RUN mode and the target memory area is not write-protected. Check tag addressing in the WinCC flexible project for correctness.
Event ID: 40000: Project download error. A fault occurred during transfer of the HMI project from the engineering PC to the panel.
Ensure the correct transfer cable or network connection is used. Verify WinCC flexible version compatibility with the panel firmware. Restart the panel in transfer mode and retry the download.
Event ID: 50000: Internal device error or system fault detected on the HMI panel.
Perform a power cycle on the panel. If the fault persists, reset the panel to factory defaults via the Start Center menu. If unresolved, the panel may require repair or replacement.
Event ID: 60000: Insufficient memory on the HMI panel. The project or runtime data exceeds available storage capacity.
Reduce the size of the HMI project by removing unused screens, tags, or archived data. Transfer a revised project to the panel.
Event ID: 70000: Firmware version mismatch. The firmware on the panel is incompatible with the downloaded project version.
Update the panel firmware to the version required by the WinCC flexible project, or recompile the project using a WinCC flexible version compatible with the installed firmware.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1CA47-7CF1) support?

The OP 177B supports MPI, PROFIBUS DP, and Ethernet (PROFINET) interfaces, as well as RS-422/485 serial communication, allowing connection to a wide range of SIMATIC S7 PLCs and third-party controllers.

Which engineering software is required to configure this panel?

The OP 177B is configured using Siemens WinCC flexible 2005 or a later version. Projects created in WinCC flexible can be transferred to the panel via MPI, PROFIBUS, Ethernet, or USB 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 can also communicate with S7-200 PLCs via the RS-422/485 interface using the appropriate protocol settings.

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, suitable for installation in industrial cabinet doors.

Can the OP 177B be operated with gloves?

Yes, the OP 177B includes physical membrane function keys in addition to the touch screen, allowing operation with gloves in environments where direct touch screen input may not be practical.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel power connector. Check that polarity is correct and voltage is within the specified range. Inspect the power supply cable and connector for damage.

Correct any wiring or polarity issues. If supply voltage is confirmed correct and the display remains blank, the internal power supply or backlight may have failed and the unit should be sent for repair.

Panel displays 'No connection to PLC' or communication alarm on startup

Check the communication cable between the HMI and PLC for continuity and correct pin assignment. Verify bus termination resistors are correctly placed at both ends of the PROFIBUS or MPI segment.

Replace or reseat the communication cable. Correct bus termination. Confirm that the PLC station address in the HMI project matches the physical PLC configuration. Restart both devices after corrections.

Touchscreen does not respond or responds inaccurately to input

Check whether the touch screen responds at all or only in certain areas. Attempt a touch screen calibration from the Start Center or Control Panel menu on the panel.

Recalibrate the touch screen via the panel's Start Center settings. If calibration does not resolve the issue, the touch screen overlay may be damaged and the unit requires hardware repair.

Project download fails or transfer is interrupted

Verify the panel is in transfer mode (accessible via Start Center). Check the transfer cable or Ethernet connection between the engineering PC and the panel. Confirm the WinCC flexible project version is compatible with the panel firmware version.

Switch the panel to transfer mode manually. Use a known-good transfer cable or network connection. Update panel firmware if a version mismatch is identified, then retry the project download.

Panel repeatedly restarts or enters a boot loop

A corrupted project or firmware image can cause repeated restarts. Attempt to access the Start Center during boot by pressing the appropriate key combination. Check if the panel reaches the Start Center or fails before that point.

If the Start Center is accessible, delete the current project and reload a known-good project. If the panel cannot reach the Start Center, a firmware recovery procedure using a memory card or PC Tool may be required.

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