Siemens 6AV6321-1FC04-0MY6 SIMATIC OP3

Name: Siemens 6AV6321-1FC04-0MY6 SIMATIC OP3
Brand: Siemens
SKU: 6AV6321-1FC04-0MY6
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6321-1FC04-0MY6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6321-1FC04-0MY6 is an operator panel (OP3) belonging to the SIMATIC HMI family, designed for compact machine-level human-machine interface applications. This unit provides a text-based display interface for monitoring and controlling industrial processes, and is part of Siemens' established line of operator panels intended for integration with SIMATIC S7 and S5 PLCs. The OP3 is a cost-effective, robust panel suited for environments where a simple, reliable operator interface is required.

The SIMATIC OP3 features a 2-line LCD text display capable of showing alphanumeric characters, enabling operators to view process values, messages, and status information. It communicates via the MPI (Multi-Point Interface) and PROFIBUS-DP protocols, allowing direct connection to SIMATIC S7-200, S7-300, and S7-400 controllers. The panel includes a membrane keypad with function keys for operator input, and is configured using Siemens ProTool software. It operates on a 24 V DC supply and is designed to meet industrial environmental requirements.

The OP3 is typically deployed in manufacturing machinery, conveyor systems, packaging equipment, and process automation installations where a compact, text-based operator interface is sufficient. Its small form factor and straightforward connectivity make it suitable for retrofitting existing control panels or integrating into space-constrained enclosures. Industries such as food and beverage, automotive assembly, and general manufacturing commonly use this panel for basic operator interaction with SIMATIC-based control systems.

Technical Specifications

Display Type	LCD, 2-line text
Display Characters	2 x 20 characters
Input/Operating Voltage	24 V DC
Communication Interface	MPI, PROFIBUS-DP
Configuration Software	ProTool
Operating Temperature	0 °C to 50 °C
Storage Temperature	-20 °C to 60 °C
Relative Humidity	10% to 90% (non-condensing)
IP Protection Rating	IP65 (front panel)
Mounting	Panel mounting
Certifications	CE, UL
Series/Product Family	SIMATIC OP3

Common Error Codes & System Events

Event ID: 10000: No connection to PLC. The operator panel cannot establish communication with the configured controller.
Check MPI or PROFIBUS-DP cable connections and termination resistors. Verify the PLC address settings match the OP3 configuration. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Communication timeout. The connection to the PLC was interrupted during operation.
Inspect the communication cable for damage or loose connectors. Check for electromagnetic interference sources near the cable. Verify bus termination at both ends of the network.
Event ID: 20000: Configuration error. The project data loaded onto the OP3 is incompatible or corrupt.
Re-download the project from ProTool to the OP3. Verify the project was compiled without errors before transfer. Check that the ProTool version matches the firmware version of the panel.
Event ID: 40000: System memory error. Internal memory fault detected during startup or operation.
Perform a factory reset of the operator panel. If the error persists, the internal memory may be faulty and the unit should be sent for repair or replacement.
Event ID: 50000: Firmware error. The panel firmware is corrupt or incompatible with the loaded project.
Re-flash the panel firmware using the appropriate Siemens firmware update tool. Ensure the firmware version is compatible with the ProTool project version being used.
Event ID: 60000: Power supply undervoltage. The 24 V DC supply voltage has dropped below the minimum operating threshold.
Measure the supply voltage at the panel connector. Ensure the power supply unit is rated adequately for the load. Check wiring for excessive voltage drop.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP3?

The OP3 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS-DP interfaces. It also supports connection to SIMATIC S5 controllers via appropriate adapters.

What software is used to configure the OP3?

The OP3 is configured using Siemens ProTool software. The project is compiled in ProTool and then downloaded to the panel via the MPI interface.

What is the supply voltage for the 6AV6321-1FC04-0MY6?

The panel operates on a 24 V DC supply voltage.

What is the IP protection rating of the OP3 front panel?

The front panel of the OP3 is rated IP65, providing protection against dust ingress and low-pressure water jets.

Can the OP3 display graphical content?

No, the OP3 is a text-based operator panel with a 2-line alphanumeric LCD display. It does not support graphical or bitmap content.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the panel power connector using a multimeter. Verify the supply is within the specified range and that the connector is firmly seated.

Restore the supply voltage to within the 24 V DC specification. If voltage is correct and the display remains blank, the internal power supply or display unit may be faulty and require repair or replacement.

OP3 shows 'No connection to PLC' message

Verify the MPI or PROFIBUS-DP cable is correctly connected to both the OP3 and the PLC. Check bus termination resistors are enabled at both ends of the network and that the PLC address configured in ProTool matches the actual PLC address.

Correct any wiring faults, enable proper bus termination, and ensure address settings are consistent between the ProTool project and the PLC configuration. Re-download the project if settings were changed.

Panel keys are unresponsive or intermittently responsive

Inspect the membrane keypad for physical damage, contamination, or wear. Check that the keypad ribbon cable connection to the internal PCB is secure.

Clean the keypad surface with a dry cloth. If the keypad is physically damaged or the ribbon cable is faulty, the keypad membrane or the entire panel front assembly should be replaced.

Project download from ProTool fails

Check the MPI cable connection between the PC and the OP3. Verify the correct COM port and transfer settings are selected in ProTool. Ensure the panel is in transfer mode.

Switch the OP3 to transfer mode via the panel menu, verify the MPI cable is functional, and retry the download. If the issue persists, try a different MPI cable or PC interface adapter.

Incorrect or garbled characters on display

This may indicate a corrupt project file loaded on the panel or a display hardware fault. Check if the issue occurs immediately on startup or only during PLC communication.

Re-download the ProTool project to the panel to rule out software corruption. If the display continues to show garbled characters with a valid project, the LCD module may be defective and require replacement.

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