Siemens 6AV6355-1CA47-7ER3 OP 77B

€ 3.495,00

SKU: 6AV6355-1CA47-7ER3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7ER3 is an operator panel belonging to the OP 77B series within Siemens' SIMATIC HMI product line. This compact panel operator unit is designed for machine-level human-machine interface applications, providing a keypad-based interface for process visualization and control. As part of the SIMATIC HMI Basic Panels family, it is engineered for straightforward integration into Siemens automation environments.

The OP 77B features a monochrome STN LCD display and a membrane keypad with function keys, system keys, and numeric entry keys for operator input without touchscreen dependency. It supports MPI and PROFIBUS DP communication interfaces, enabling direct connection to SIMATIC S7-200, S7-300, and S7-400 PLCs. The unit operates on a 24 V DC supply and is configured using WinCC flexible software, supporting tag-based data exchange, alarm management, recipe handling, and trend displays within its memory constraints.

The OP 77B is commonly deployed in manufacturing machinery, packaging equipment, conveyor systems, and process plant installations where a robust, keypad-operated interface is preferred over touchscreen panels. Its compact form factor and PROFIBUS/MPI connectivity make it well suited for retrofit and new-build machine control cabinets across automotive, food and beverage, and general industrial manufacturing sectors.

Technical Specifications

Display Type	Monochrome STN LCD
Display Size	4 inches
Display Colors	Monochrome (blue/white)
Input Voltage	24 V DC
Voltage Tolerance	19.2 V DC to 28.8 V DC
Power Consumption	Max. 4.5 W
Communication Interface	MPI, PROFIBUS DP
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 77B

Common Error Codes & System Events

Event ID: 10000: Configuration error detected during startup; the loaded project is incompatible or corrupt.
Re-transfer the correct WinCC flexible project to the panel using the configuration PC. Verify project version compatibility.
Event ID: 10001: Communication connection to the PLC has been interrupted or cannot be established.
Check MPI or PROFIBUS DP cable connections and termination resistors. Verify PLC address settings match the panel configuration.
Event ID: 20000: System memory low; available memory for runtime operation is insufficient.
Reduce the number of active screens, tags, or alarms in the project. Transfer an optimized project to the device.
Event ID: 40000: Tag read/write error; the panel cannot access a configured PLC tag.
Verify the tag address in WinCC flexible matches the actual PLC data block or memory area. Check PLC program for address conflicts.
Event ID: 50000: Alarm buffer overflow; the number of pending alarms exceeds the buffer capacity.
Acknowledge and clear active alarms on the panel. Review the alarm configuration to reduce simultaneous alarm generation.
Event ID: 70000: Transfer mode active; the panel is waiting for a project download from the configuration PC.
Transfer the project from WinCC flexible, or press the appropriate key combination to exit transfer mode and resume normal operation.

Frequently Asked Questions

Which PLCs are compatible with the OP 77B?

The OP 77B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It can also communicate with S7-200 via the PPI protocol depending on configuration.

What software is used to configure the 6AV6355-1CA47-7ER3?

The panel is configured using Siemens WinCC flexible 2005 or a later version. Projects are transferred to the device via MPI, PROFIBUS DP, or a direct PC/PPI cable connection.

What is the supply voltage for this operator panel?

The OP 77B requires a 24 V DC supply voltage with an acceptable range of 19.2 V DC to 28.8 V DC.

Does the OP 77B support recipe and alarm functions?

Yes, the OP 77B supports alarm logging, alarm acknowledgement, and basic recipe management within the limits of its onboard memory and project configuration.

What is the front panel protection rating of the OP 77B?

The front panel of the OP 77B carries an IP65 protection rating, making it suitable for installation in environments with dust and water spray exposure.

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 that voltage is within the 19.2 V to 28.8 V range.

Correct the supply voltage or replace the power supply unit feeding the panel. If voltage is correct, the internal power supply board or display backlight may require replacement.

Panel shows 'No connection to PLC' or communication fault at startup

Verify the MPI or PROFIBUS DP cable is correctly seated at both the panel and PLC connectors. Check bus termination at both ends of the network and confirm the PLC address configured in WinCC flexible matches the actual PLC setting.

Replace or reseat the communication cable, correct bus termination, and ensure address settings are consistent between the panel project and the PLC configuration.

Panel is stuck in transfer mode and will not start the runtime project

The panel enters transfer mode if no valid project is loaded or if the transfer mode was manually activated. Check whether a project has been successfully downloaded previously.

Connect a PC running WinCC flexible and transfer a valid project to the panel. If the panel does not respond to transfer attempts, perform a factory reset using the panel's boot menu.

Function keys do not respond or produce incorrect actions

Check the key assignment in the WinCC flexible project for the affected function keys. Inspect the membrane keypad for physical damage or contamination beneath the key surface.

Correct the key assignments in the project and re-transfer to the panel. If the keypad membrane is physically damaged, the front panel assembly should be replaced.

Alarms are displayed but cannot be acknowledged

Verify that the acknowledgement key or screen button is correctly configured in the WinCC flexible alarm settings. Check that the associated PLC bit for alarm acknowledgement is accessible and writable.

Correct the alarm acknowledgement configuration in WinCC flexible and re-transfer the project. Ensure the PLC program releases the acknowledgement bit correctly after the operator action.

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