Siemens 6AV6355-1CA47-7BC2 OP 177B

€ 3.495,00

SKU: 6AV6355-1CA47-7BC2 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7BC2 is an operator panel belonging to the SIMATIC HMI OP 177B series, designed for machine-level human-machine interface applications. This unit is part of Siemens' SIMATIC HMI product line and provides a monochrome or color display interface for process visualization and control. The OP 177B series is a mid-range operator panel offering robust performance for demanding industrial environments.

The 6AV6355-1CA47-7BC2 features a 5.7-inch STN display and supports both MPI/PROFIBUS DP and Ethernet communication interfaces, enabling flexible integration into existing automation architectures. The panel is configured using Siemens WinCC flexible engineering software and supports scripting, alarm management, recipe management, and trend displays. It includes an integrated USB interface for data transfer and backup, along with a membrane keypad for operator input. The unit operates on 24 V DC supply and is rated for industrial-grade operation.

The OP 177B is widely used in machine building, manufacturing automation, and process industries where a compact, reliable operator interface is required at the machine level. It is suitable for integration with Siemens S7-300 and S7-400 PLCs as well as third-party controllers via its communication interfaces. Typical applications include packaging machinery, conveyor systems, press controls, and general factory automation equipment.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Colors	256 colors
Input/Operating Voltage	24 V DC
Communication Interface	MPI, PROFIBUS DP, Ethernet (RJ45)
Engineering 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
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 the MPI/PROFIBUS DP or Ethernet cable connections and verify the communication settings (station address, baud rate) match those configured in the PLC. Restart both the HMI and the PLC if necessary.
Event ID: 10001: Timeout error on the communication channel. The HMI did not receive a response from the PLC within the configured timeout period.
Verify network cabling and termination resistors on PROFIBUS segments. Check PLC program is running and not in STOP mode. Increase the communication timeout value in WinCC flexible if the network is heavily loaded.
Event ID: 20000: Project download error. The project transfer from the engineering PC to the HMI panel failed or was interrupted.
Check the transfer cable or network connection between the PC and the HMI. Ensure the HMI is in Transfer mode and that the correct interface is selected in WinCC flexible. Retry the download.
Event ID: 40000: System memory low warning. The available runtime memory on the HMI panel is running low, which may affect performance.
Reduce the number of active alarms, trend buffers, or recipe data sets. Archive data to an external USB device and clear internal logs to free memory.
Event ID: 50000: Internal device error or hardware fault detected during self-test at startup.
Perform a power cycle. If the error persists, back up the project and perform a factory reset via the Control Panel. If the fault continues, the unit may require repair or replacement.
Event ID: 60000: Configuration error detected. The loaded project contains settings or objects that are incompatible with the current firmware version of the HMI panel.
Check the firmware version of the HMI and compare it with the WinCC flexible project settings. Update the HMI firmware to the required version or recompile the project targeting the installed firmware version.
Event ID: 70000: Alarm buffer overflow. The number of pending or unacknowledged alarms has exceeded the configured buffer size.
Acknowledge and clear active alarms on the HMI. Increase the alarm buffer size in the WinCC flexible project configuration if overflow occurs frequently.

Frequently Asked Questions

What communication interfaces does the OP 177B (6AV6355-1CA47-7BC2) support?

The OP 177B supports MPI, PROFIBUS DP, and Ethernet (TCP/IP via RJ45), allowing connection to a wide range of Siemens and third-party controllers.

Which engineering software is used to configure this HMI panel?

The OP 177B is configured using Siemens WinCC flexible 2008 or a compatible version. Projects are compiled and downloaded to the panel via Ethernet or MPI/PROFIBUS connection.

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

Yes, the OP 177B is fully compatible with Siemens S7-300 and S7-400 PLCs via MPI or PROFIBUS DP. It can also communicate with S7-1200 and S7-1500 PLCs via Ethernet using appropriate drivers.

What is the supply voltage for the 6AV6355-1CA47-7BC2?

The unit operates on a 24 V DC supply voltage, which is standard for SIMATIC HMI operator panels.

Can the OP 177B be used with third-party PLCs?

Yes, the OP 177B supports communication drivers for various third-party controllers including Allen-Bradley, Mitsubishi, and Modbus-compatible devices, configurable through WinCC flexible.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for blown internal fuses or damaged power supply circuitry.

Ensure the 24 V DC supply is within the specified tolerance. Replace any blown fuses. If the backlight has failed, the display inverter or backlight lamp may need replacement by a qualified repair technician.

HMI panel does not communicate with the PLC

Check the physical cable connections on the MPI, PROFIBUS DP, or Ethernet port. Verify the station address and baud rate settings on both the HMI and the PLC match. Use a bus diagnostic tool to check for PROFIBUS segment errors.

Replace or reseat the communication cable. Correct any address or baud rate mismatches in the WinCC flexible project and PLC configuration. Ensure PROFIBUS termination resistors are correctly placed at both ends of the segment.

Touchscreen or keypad inputs are not responding correctly

Check whether the membrane keypad shows physical damage or contamination. For touch-enabled variants, verify the touch calibration settings in the Control Panel of the HMI.

Clean the keypad surface and check for mechanical damage. Recalibrate the touch interface via the HMI Control Panel. If individual keys are unresponsive, the membrane keypad assembly may require replacement.

Project cannot be transferred to the HMI panel

Verify that the HMI is set to Transfer mode (accessible via the Control Panel or on startup). Check the transfer interface settings in WinCC flexible match the physical connection being used (Ethernet or MPI).

Switch the HMI to Transfer mode manually. Confirm the IP address or MPI address is correctly configured. Disable any firewall software on the engineering PC that may be blocking the transfer connection.

HMI displays 'No project' or loads an incorrect project after restart

Check the internal flash memory for corruption. Verify that the project was successfully compiled and fully transferred without errors during the last download session.

Re-transfer the correct compiled project to the HMI using WinCC flexible. If memory corruption is suspected, perform a factory reset via the Control Panel and then reload the project from the engineering PC.

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