Siemens 6AV6321-1BA14-0CY0 SIMATIC OP3

Name: Siemens 6AV6321-1BA14-0CY0 SIMATIC OP3
Brand: Siemens
SKU: 6AV6321-1BA14-0CY0
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6321-1BA14-0CY0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6321-1BA14-0CY0 is an operator panel (OP3) belonging to the SIMATIC HMI family from Siemens. It is a compact, text-based operator panel designed for simple machine-level human-machine interface tasks. The OP3 provides a cost-effective solution for displaying process values, alarm messages, and operator prompts in industrial automation environments.

The OP3 features a 2-line LCD text display capable of showing up to 20 characters per line, making it suitable for straightforward status and message display. It communicates via the MPI (Multi-Point Interface) or PROFIBUS DP protocol, enabling direct integration with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs. The panel is configured using Siemens ProTool software and supports a limited set of function keys for operator input. It operates on a 24 V DC supply and is built for panel-mounting in industrial enclosures.

The SIMATIC OP3 is widely used in manufacturing, process automation, and machine building applications where a simple, reliable text display interface is required. It is particularly suited for small machines and standalone equipment where cost and panel space are constraints. Industries such as packaging, material handling, and general factory automation commonly deploy this panel for basic operator interaction and alarm acknowledgment.

Technical Specifications

Display Type	LCD Text Display
Display Lines	2 lines x 20 characters
Input/Operating Voltage	24 V DC
Communication Interface	MPI / PROFIBUS DP
PLC Compatibility	SIMATIC S7-200, S7-300, S7-400
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 (Front)	IP65
Mounting	Panel mounting
Certifications	CE, UL
Series/Product Family	SIMATIC OP3

Common Error Codes & System Events

Event ID: 10000: No connection to PLC. The OP3 cannot establish communication with the configured controller.
Check MPI/PROFIBUS cable connections and termination resistors. Verify PLC address settings match the OP3 configuration. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Communication error. Data transfer between the OP3 and the PLC has been interrupted.
Inspect the communication cable for damage. Verify bus termination and cable shielding. Check that the baud rate settings on both the OP3 and PLC match.
Event ID: 20000: Configuration transfer error. The project data could not be successfully downloaded to the OP3.
Verify the ProTool project is compiled without errors. Check the PC-to-OP3 transfer cable connection and ensure the OP3 is in transfer mode before initiating download.
Event ID: 40000: Alarm buffer overflow. The number of pending alarms exceeds the OP3 alarm buffer capacity.
Acknowledge and clear existing alarms. Review the alarm configuration in ProTool to reduce the number of simultaneous active alarms if possible.
Event ID: 10006: PLC address conflict. The configured PLC station address is duplicated on the MPI/PROFIBUS network.
Check all node addresses on the MPI/PROFIBUS network and ensure each device has a unique address. Correct the address in the OP3 configuration or on the conflicting device.
Event ID: 10002: Timeout waiting for PLC response. The OP3 did not receive a response from the PLC within the expected time window.
Check network load and cable integrity. Reduce the number of devices on the bus if overloaded. Verify PLC cycle time is within acceptable limits.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP3 (6AV6321-1BA14-0CY0)?

The OP3 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 and program the OP3?

The OP3 is configured using Siemens ProTool software. Projects are created on a PC and downloaded to the panel via a serial transfer cable.

What is the supply voltage required for the OP3?

The OP3 requires a 24 V DC power supply for operation.

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

The front panel of the OP3 is rated IP65, making it suitable for panel-mount installations where protection against dust and water jets is required.

Can the OP3 display graphical content or images?

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

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Verify polarity is correct. Inspect internal fuse if accessible.

Ensure the power supply is within the 24 V DC specification and correctly wired. Replace the power supply or repair wiring if voltage is absent or out of range.

OP3 shows 'No connection to PLC' message continuously

Verify MPI/PROFIBUS cable is connected and undamaged. Check that bus termination resistors are correctly placed at both ends of the network. Confirm PLC station address matches the OP3 project configuration.

Replace or re-seat the communication cable. Correct the station address in the OP3 configuration using ProTool and re-download the project. Enable bus termination on the first and last devices on the network.

Project download from PC to OP3 fails

Confirm the OP3 is set to transfer mode before initiating the download. Check the PC-to-OP3 serial cable for continuity and correct COM port assignment in ProTool.

Place the OP3 in transfer mode via the startup menu. Use a known-good PC adapter cable and verify the correct COM port and baud rate are selected in ProTool settings.

Function keys on the OP3 do not respond

Check if the OP3 is in normal operating mode and not in transfer or configuration mode. Verify the key assignment in the ProTool project is correctly configured and downloaded.

Re-download the ProTool project with correct function key assignments. If keys remain unresponsive, inspect the membrane keypad for physical damage and replace the panel if the keypad is defective.

Alarm messages are not displayed on the OP3

Verify that the alarm bit addresses in the ProTool project match the corresponding PLC data addresses. Check PLC program to confirm alarm bits are being set correctly.

Cross-check alarm tag addresses between the ProTool configuration and the PLC program. Correct any address mismatches and re-download the project to the OP3.

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