Siemens 6AV6355-1CA47-7CH2 OP 177B

€ 1.995,00

SKU: 6AV6355-1CA47-7CH2 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7CH2 is an operator panel belonging to the SIMATIC HMI OP 177B series, manufactured by Siemens as part of its SIMATIC HMI product line. This unit is a compact, panel-mounted operator panel designed for machine-level visualization and control tasks in industrial automation environments. It provides a monochrome or color display interface for process monitoring, parameter input, and alarm management.

The OP 177B features a 5.7-inch STN display and supports both touch and key-based operation, combining a touchscreen with dedicated function keys for flexible operator interaction. It communicates via MPI, PROFIBUS DP, and Ethernet interfaces, enabling integration with SIMATIC S7 PLCs and other compatible controllers. The panel operates on a 24 V DC supply and supports configuration through Siemens WinCC flexible engineering software. Onboard memory supports project storage and recipe management, and the unit is rated for industrial-grade operating conditions.

The OP 177B is widely deployed in machine building, process automation, and manufacturing industries where a robust, mid-range HMI panel is required at the machine level. It is suitable for applications such as packaging machinery, conveyor systems, press controls, and general-purpose machine tool interfaces. Its combination of keypad and touch input makes it appropriate for environments where gloved operation or dedicated function key access is necessary.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Touch Technology	Resistive touchscreen with membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 12 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
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 and System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC or controller. The connection to the configured communication partner has been lost or cannot be established.
Check MPI or PROFIBUS DP cable connections and termination resistors. Verify the PLC is powered and running. Confirm station address settings match the project configuration.
Event ID: 10001: Connection to the PLC was interrupted during runtime. The HMI panel cannot read or write process data.
Inspect the communication cable for damage. Verify network topology and bus termination. Restart the HMI and PLC if the connection is not automatically restored.
Event ID: 20000: Project download failed or the loaded project is incompatible with the current firmware version of the panel.
Verify that the WinCC flexible project version matches the panel firmware. Update the panel firmware if necessary and re-transfer the project.
Event ID: 40000: System memory low. The available runtime memory on the HMI panel is insufficient to execute the current project.
Reduce the project size by optimizing graphics, reducing the number of variables, or archiving historical data. Restart the panel to free temporary memory.
Event ID: 50000: Internal device error detected. A hardware or firmware fault has occurred within the panel.
Perform a power cycle. If the error persists, perform a factory reset and reload the project. Contact Siemens technical support if the fault recurs.
Event ID: 70000: Recipe data error. A recipe record could not be read from or written to the storage medium.
Check the integrity of the recipe data and the storage medium. Re-transfer the recipe configuration from WinCC flexible and verify available storage space.
Event ID: 110000: Tag update error. One or more configured HMI tags could not be updated within the defined cycle time.
Review the tag polling cycle settings in WinCC flexible. Reduce the number of tags polled simultaneously or increase the update cycle time to match network capacity.

Frequently Asked Questions

What PLC systems are compatible with the OP 177B?

The OP 177B is primarily designed for use with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP. It also supports Ethernet-based communication with compatible S7 controllers when configured accordingly.

What software is required to configure the OP 177B?

The OP 177B is configured using Siemens WinCC flexible 2005 or a later version. Projects are transferred to the panel via MPI, PROFIBUS, Ethernet, or a USB connection depending on the available interfaces.

What is the supply voltage for the 6AV6355-1CA47-7CH2?

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

Does the OP 177B support alarm logging and recipe management?

Yes, the OP 177B supports alarm logging, message archiving, and recipe management functions. These features are configured within the WinCC flexible project and stored in the panel's onboard memory.

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

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.

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 fuses or wiring faults at the supply terminals.

Ensure the supply voltage is stable and within the 24 V DC specification. Replace any blown fuses and verify all connector pins are securely seated. If the display remains blank, the internal power supply or backlight may require replacement.

HMI panel shows 'No connection to PLC' message at runtime

Verify the MPI or PROFIBUS DP cable is correctly connected and that bus termination resistors are in place at both ends of the network. Check that the PLC station address configured in the project matches the physical PLC setting.

Correct any wiring faults, ensure proper bus termination, and confirm matching station addresses. Restart both the HMI panel and the PLC. If using Ethernet, verify IP address configuration on both devices.

Touchscreen does not respond or responds inaccurately

Determine whether the issue is limited to specific screen areas or affects the entire display. Check for physical damage to the touchscreen surface or contamination affecting touch sensitivity.

Perform a touchscreen recalibration through the panel's system settings menu. Clean the screen surface with a soft, dry cloth. If calibration does not resolve the issue, the touchscreen assembly may need to be replaced.

Project transfer from WinCC flexible fails

Check the communication interface being used for transfer (MPI, Ethernet, or USB). Verify that the panel is in transfer mode and that the correct interface is selected in WinCC flexible transfer settings.

Switch the panel to transfer mode manually via the Start Center. Confirm the interface settings match on both the PC and the panel. Update the panel firmware if the project version is incompatible with the current firmware.

Panel repeatedly restarts or enters a boot loop

This may indicate a corrupted project file, insufficient memory, or a hardware fault. Observe whether the panel completes the boot sequence before restarting.

Perform a factory reset by accessing the panel's system settings during startup. Re-transfer a known-good project from WinCC flexible. If the boot loop persists after a factory reset, the panel may have a hardware fault requiring repair or replacement.

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