Siemens 6AV6321-1FC14-0MY6 SIMATIC OP3

Name: Siemens 6AV6321-1FC14-0MY6 SIMATIC OP3
Brand: Siemens
SKU: 6AV6321-1FC14-0MY6
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6321-1FC14-0MY6 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6321-1FC14-0MY6 is an operator panel (OP3) belonging to the SIMATIC HMI product family from Siemens. It is a compact, text-based operator panel designed for straightforward machine-level operator control and monitoring tasks. This unit provides a cost-effective interface solution for smaller automation systems requiring basic display and input functionality.

The OP3 features a 2-line LCD text display capable of showing alphanumeric characters, along with a membrane keypad for operator input. It communicates via the MPI (Multi-Point Interface) and PROFIBUS DP protocols, enabling direct integration with SIMATIC S7 PLCs. The panel is configured using ProTool software and supports the display of text messages, setpoint entry, and basic process value visualization.

The SIMATIC OP3 is typically deployed in manufacturing machinery, conveyor systems, packaging equipment, and other industrial automation applications where a compact, low-cost HMI solution is sufficient. Its small form factor and panel-mount design make it well suited for integration into control cabinet doors and machine enclosures where space is limited and operator interaction requirements are straightforward.

Technical Specifications

Display Type	LCD text display
Display Lines	2 lines
Characters per Line	16 characters
Input/Operating Voltage	24 V DC
Power Consumption	3 W (typical)
Communication Interface	MPI, PROFIBUS DP
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
Series/Product Family	SIMATIC OP3
Configuration Software	ProTool
PLC Compatibility	SIMATIC S7-200, S7-300, S7-400

Common Error Codes & System Events

Event ID: 10000: Communication error between the OP3 and the connected PLC. The panel cannot establish or maintain a connection to the controller.
Check MPI/PROFIBUS cable connections and termination resistors. Verify the PLC address and baud rate settings match the OP3 configuration. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to the PLC was interrupted during operation.
Inspect the communication cable for damage or loose connectors. Check that the MPI/PROFIBUS network is properly terminated at both ends. Restart the OP3 and PLC if the connection is not automatically restored.
Event ID: 20000: Configuration error detected. The project loaded on the OP3 is incompatible or corrupted.
Reload the project to the OP3 using ProTool. Verify that the project was compiled without errors before downloading.
Event ID: 40000: Operating system error on the OP3. An internal system fault has been detected.
Perform a power cycle on the OP3. If the error persists, perform a factory reset and reload the project configuration.
Event ID: 50000: Tag update error. A configured tag cannot be read from or written to the PLC.
Verify that the PLC data block or memory address referenced by the tag exists and is accessible. Check that the PLC program has not been modified in a way that removes the referenced address.
Communication Error: No data exchange occurring between OP3 and PLC despite physical connection being present.
Confirm MPI bus address of the OP3 is unique on the network. Check baud rate configuration on both the OP3 and PLC. Re-download the project configuration to the panel.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP3 (6AV6321-1FC14-0MY6)?

The OP3 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP communication interfaces.

What software is used to configure and program the OP3?

The OP3 is configured using Siemens ProTool software. Projects are created on a PC and then downloaded to the panel via the MPI interface.

What is the supply voltage for the OP3?

The OP3 operates on a 24 V DC supply voltage, which is the standard control voltage used in SIMATIC automation systems.

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

The front panel of the OP3 achieves IP65 protection, making it resistant to dust and low-pressure water jets when correctly installed in a panel cutout.

Can the OP3 display graphical content or only text?

The OP3 is a text-only operator panel and does not support graphical display. It shows alphanumeric characters across two lines of 16 characters each.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the unit. Check for blown internal fuses or wiring faults in the supply circuit.

Restore the 24 V DC supply to within the specified tolerance. If the supply is correct but the display remains blank, the internal power supply or LCD module may be faulty and the unit should be repaired or replaced.

OP3 shows communication error or no connection to PLC

Verify the MPI or PROFIBUS DP cable is securely connected at both the OP3 and PLC ends. Check that bus termination resistors are correctly placed at both ends of the network. Confirm that the PLC address configured in the OP3 project matches the actual PLC address.

Correct any wiring or termination issues. Adjust the address and baud rate settings in the ProTool project and re-download to the OP3. Replace the communication cable if it is damaged.

Operator keys are unresponsive or intermittently responsive

Inspect the membrane keypad for physical damage, contamination, or wear. Test each key systematically to identify whether the fault is isolated to specific keys or affects the entire keypad.

Clean the keypad surface with a dry cloth. If keys remain unresponsive, the membrane keypad assembly may need to be replaced, as it is a wear component on this panel type.

Project download to OP3 fails from ProTool

Check the MPI cable connection between the PC programming adapter and the OP3. Verify that the correct COM port and transfer settings are selected in ProTool. Confirm the OP3 is in transfer mode.

Place the OP3 in transfer mode by navigating to the transfer menu on the panel. Ensure the PC adapter (e.g., PC Adapter USB) drivers are correctly installed. Retry the download with the correct baud rate selected in ProTool.

Incorrect or garbled text displayed on screen

Compare the displayed text with the configured messages in the ProTool project. Check whether the issue occurs on all messages or only specific ones, which may indicate a tag addressing error or corrupted project data.

Re-download the project to the OP3 to overwrite any corrupted data. Verify that all text messages and tag addresses in the ProTool project are correctly configured before downloading.

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