Siemens 6AV6355-1CA47-7DL3 OP 77B

€ 2.070,40

SKU: 6AV6355-1CA47-7DL3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1CA47-7DL3 is an operator panel belonging to the OP 77B series within the Siemens SIMATIC HMI product family. This compact panel operator unit is designed for machine-level human-machine interface applications, providing a straightforward interface for monitoring and controlling industrial processes. The OP 77B is part of the Micro Panel range and is intended for use with Siemens SIMATIC S7 PLCs and compatible controllers.

The 6AV6355-1CA47-7DL3 features a monochrome LCD display with a resolution of 160 x 80 pixels and a membrane keypad for operator input, eliminating the need for a touchscreen. It supports communication via MPI and PROFIBUS DP interfaces, enabling direct connection to SIMATIC S7-200, S7-300, and S7-400 PLCs. The panel operates on a 24 V DC supply and is configured using Siemens WinCC flexible software. It offers a compact and robust construction suitable for panel door mounting with an IP65 protection rating on the front face.

The OP 77B is widely deployed in manufacturing, machine building, and process automation environments where a cost-effective, reliable operator interface is required. It is commonly found on standalone machines, conveyor systems, and packaging equipment where basic process visualization and parameter input are needed. Its compact form factor and compatibility with the SIMATIC controller range make it a practical choice for OEMs and system integrators working with Siemens automation platforms.

Technical Specifications

Display Type	Monochrome LCD
Display Resolution	160 x 80 pixels
Input/Operating Voltage	24 V DC
Power Consumption	Max. 4.5 W
Communication Interface	MPI, PROFIBUS DP
IP Protection Rating (Front)	IP65
IP Protection Rating (Rear)	IP20
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90%, non-condensing
Mounting	Panel mounting
Configuration Software	WinCC flexible Micro
Certifications	CE, UL
Series/Product Family	SIMATIC HMI OP 77B

Common Error Codes and System Events

Event ID: 10000: Configuration error detected on startup; the loaded project is incompatible or corrupt.
Reload the project using WinCC flexible and ensure the project version matches the panel firmware version.
Event ID: 20000: Communication link to the PLC has been interrupted or cannot be established.
Check MPI or PROFIBUS DP cable connections, verify bus address settings, and confirm the PLC is powered and in RUN mode.
Event ID: 40000: Tag read/write error; the panel cannot access a configured PLC data address.
Verify the PLC tag addresses in the WinCC flexible project match the actual PLC program data blocks and memory areas.
Event ID: 50000: Overflow of the alarm buffer; too many alarms have been generated without acknowledgement.
Acknowledge pending alarms on the panel and review the alarm configuration to reduce unnecessary alarm triggers.
Event ID: 60000: Firmware update failed or firmware version mismatch detected.
Repeat the firmware update procedure using ProSave or WinCC flexible, ensuring the correct firmware file for the OP 77B is used.
Event ID: 70000: Internal device error; a hardware fault has been detected within the panel.
Cycle power to the panel. If the error persists, the unit may require repair or replacement of internal components.

Frequently Asked Questions

Which PLCs are compatible with the OP 77B panel?

The OP 77B is compatible with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP communication interfaces.

What software is used to configure the 6AV6355-1CA47-7DL3?

The panel is configured using Siemens WinCC flexible Micro or WinCC flexible Standard software. Projects are transferred to the panel via MPI cable or USB-to-MPI adapter.

What is the supply voltage for this operator panel?

The OP 77B requires a 24 V DC power supply for operation.

Does the OP 77B support touchscreen input?

No, the OP 77B uses a membrane keypad for operator input and does not feature a touchscreen display.

What is the front panel protection rating of the 6AV6355-1CA47-7DL3?

The front face of the panel 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 for blown internal fuse or wiring fault.

Ensure the 24 V DC supply is within tolerance. Replace the supply fuse if blown, or verify and correct wiring connections to the power terminals.

Panel displays communication error and cannot connect to PLC

Check the MPI or PROFIBUS DP cable for damage and verify the bus termination resistors are correctly placed at both ends of the network. Confirm the panel bus address does not conflict with other devices.

Replace damaged cables, set correct and unique bus addresses on the panel and PLC, and ensure bus termination is active only at the physical ends of the network segment.

Project transfer from WinCC flexible fails or times out

Verify the MPI adapter or PC/PG cable is correctly installed and the COM port or USB driver is functioning. Check that the transfer channel settings in WinCC flexible match the panel connection type.

Reinstall the PC adapter driver, select the correct transfer channel in WinCC flexible, and ensure the panel is set to transfer mode before initiating the download.

Operator keys are unresponsive or register incorrect inputs

Inspect the membrane keypad for physical damage, contamination, or deformation. Test each key systematically in the panel's built-in service menu if accessible.

Clean the keypad surface with a dry cloth. If keys remain unresponsive, the membrane keypad assembly may need replacement.

Panel repeatedly restarts or enters a boot loop

Check the supply voltage stability under load. Inspect the project loaded on the panel for configuration errors that may cause a startup fault.

Stabilise the 24 V DC supply, reload a verified project using WinCC flexible, and if the issue persists, perform a factory reset and re-transfer the project.

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