Siemens 6AV6355-1CA47-7CE4 OP 177B

€ 3.495,00

SKU: 6AV6355-1CA47-7CE4 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7CE4 is an operator panel belonging to the OP 177B series within Siemens' SIMATIC HMI product line. This unit serves as a human-machine interface designed for machine-level visualization and control tasks, providing operators with a graphical interface to monitor and interact with automated processes. The OP 177B series is part of the broader SIMATIC HMI Basic Panels generation and is engineered for demanding industrial environments.

The 6AV6355-1CA47-7CE4 features a 5.7-inch STN display with a resolution of 320 x 240 pixels (QVGA) supporting 256 colors, combined with a membrane keypad for operator input. The panel supports communication via MPI, PROFIBUS DP, and RS-422/RS-485 interfaces, enabling integration with SIMATIC S7-200, S7-300, and S7-400 PLCs as well as third-party controllers. It operates on a 24 V DC supply and is configured using WinCC flexible 2008 engineering software, with onboard flash memory for project storage.

The OP 177B is widely deployed in machine building, packaging machinery, conveyor systems, and process automation applications where a compact, robust operator interface is required. Its keypad-based input combined with graphical display capability makes it suitable for environments where touchscreen operation is impractical due to gloves, dust, or vibration. The panel's PROFIBUS DP connectivity makes it particularly well suited for integration into distributed automation architectures common in manufacturing and process industries.

Technical Specifications

Display Size	5.7 inch
Display Type	STN LCD
Display Resolution	320 x 240 pixels (QVGA)
Display Colors	256 colors
Input Type	Membrane keypad
Input/Operating Voltage	24 V DC
Power Consumption	Max. 9 W
Communication Interface	MPI, PROFIBUS DP, RS-422/RS-485
Configuration Software	WinCC flexible 2008
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

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC or controller. The panel cannot establish or maintain a connection.
Check the MPI or PROFIBUS DP cable connections and terminating resistors. Verify the configured station address and baud rate match the PLC settings. Restart both the panel and the PLC.
Event ID: 10001: Connection to the PLC has been interrupted during runtime operation.
Inspect physical cabling for damage or loose connectors. Verify network topology and bus termination. Check PLC operational state and re-establish communication.
Event ID: 20000: Project download error. The project could not be transferred to the HMI panel successfully.
Verify the transfer cable or network connection between the engineering PC and the panel. Ensure WinCC flexible project is compiled without errors before transfer. Check available flash memory on the device.
Event ID: 40000: System memory low. The panel's available runtime memory is insufficient for the current project.
Reduce the number of active screens, alarms, or data records in the project. Optimize the project in WinCC flexible and reload. Consider reducing the number of simultaneously active connections.
Event ID: 50000: Internal device error or hardware fault detected during self-test or runtime.
Perform a panel restart. If the fault persists, perform a factory reset via the panel's Start Center. If the error continues, the unit may require hardware repair or replacement.
Event ID: 60000: Configuration error. The loaded project configuration does not match the target device type or firmware version.
Verify the project is configured for the correct HMI device type in WinCC flexible. Update the panel firmware if necessary and re-download the project.
Event ID: 70000: Alarm buffer overflow. The number of pending alarms exceeds the buffer capacity of the panel.
Acknowledge and clear active alarms on the panel. Review the alarm configuration in WinCC flexible to reduce simultaneous alarm generation. Increase alarm buffer size if configurable.

Frequently Asked Questions

Which PLCs are compatible with the Siemens 6AV6355-1CA47-7CE4 OP 177B?

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

What software is required to configure and program this HMI panel?

The panel is configured using Siemens WinCC flexible 2008 engineering software. Projects are compiled in WinCC flexible and downloaded to the panel via MPI, PROFIBUS, or a direct serial connection.

What is the supply voltage for the 6AV6355-1CA47-7CE4?

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

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

The front panel of the OP 177B is rated IP65, making it resistant to dust and water jets. The rear of the unit is rated IP20.

Can the OP 177B panel be used with SIMATIC S7-1200 or S7-1500 PLCs?

The OP 177B was designed for use with S7-200, S7-300, and S7-400 series PLCs. Compatibility with S7-1200 or S7-1500 is limited and not officially supported; newer SIMATIC Basic or Comfort Panels are recommended for those controllers.

Troubleshooting

Display remains blank after power is applied

Check the 24 V DC supply voltage at the power connector. Verify the supply is within tolerance and the connector is fully seated. Inspect the internal fuse if accessible.

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

Panel fails to communicate with the connected S7 PLC

Verify the MPI or PROFIBUS DP address configured on the panel matches the network settings. Check cable integrity and bus termination at both ends of the network.

Correct any address conflicts in the panel's Start Center settings. Replace damaged cables and ensure proper 120-ohm termination resistors are installed at both ends of the bus. Restart both devices after corrections.

Touchscreen or keypad inputs are not responding correctly

For keypad issues, inspect the membrane keypad for physical damage or contamination. Check whether the issue is consistent across all keys or limited to specific ones.

Clean the keypad surface with a dry cloth. If specific keys are unresponsive due to physical damage, the membrane keypad assembly may need to be replaced. Perform a panel restart to rule out software lockup.

Project download from WinCC flexible fails or times out

Check the transfer cable connection between the PC and the panel. Confirm the panel is in Transfer mode via the Start Center. Verify the COM port or network settings in WinCC flexible match the physical connection.

Switch the panel to Transfer mode manually through the Start Center menu. Use a known-good transfer cable. Ensure the correct interface and baud rate are selected in the WinCC flexible transfer settings.

Panel displays repeated communication timeout alarms during operation

Monitor the PROFIBUS or MPI network for bus errors using a diagnostic tool. Check for loose connectors, excessive cable length, or missing termination resistors causing signal degradation.

Secure all connectors and verify cable lengths are within specification for the configured baud rate. Install or correct bus termination. Reduce the polling rate in the WinCC flexible connection settings if the network is heavily loaded.

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