Siemens 6AV6321-1BA23-1CY0 SIMATIC OP3

Name: Siemens 6AV6321-1BA23-1CY0 SIMATIC OP3
Brand: Siemens
SKU: 6AV6321-1BA23-1CY0
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6321-1BA23-1CY0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6321-1BA23-1CY0 is an operator panel (OP3) belonging to the SIMATIC HMI family, designed for compact machine-level operator control and monitoring tasks. This unit is a text-based operator panel capable of displaying alphanumeric information across two lines, making it suitable for straightforward process visualization and parameter input. It is manufactured by Siemens as part of the SIMATIC HMI portfolio and is intended for integration into control cabinets and machine panels.

The OP3 features a two-line LCD display capable of showing 20 characters per line, providing clear readout of process values, alarms, and status messages. It communicates via the MPI (Multi-Point Interface) and PROFIBUS DP protocols, enabling direct connection to SIMATIC S7-200, S7-300, and S7-400 PLCs. The panel includes a membrane keypad with function keys for operator input, and configuration is performed using the ProTool software package. The unit operates on a 24 V DC supply and is built to withstand typical industrial environments.

The SIMATIC OP3 is commonly deployed in manufacturing, packaging, and process automation applications where a cost-effective, compact HMI solution is required. It is well-suited for small to medium-sized machines where basic text-based operator interaction is sufficient, such as conveyor systems, pumping stations, and simple assembly lines. Its compact form factor and compatibility with the SIMATIC S7 PLC family make it a practical choice for retrofit and new installation projects in industrial settings.

Technical Specifications

Display Type	LCD, text-based
Display Lines	2 lines x 20 characters
Input/Operating Voltage	24 V DC
Communication Interface	MPI, PROFIBUS DP
Keypad	Membrane keypad with function keys
Configuration Software	ProTool
PLC Compatibility	SIMATIC S7-200, S7-300, S7-400
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

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.
Check MPI or PROFIBUS DP cable connections and termination resistors. Verify the PLC address settings match the configuration in ProTool. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Configured PLC address not found on the network. The OP3 cannot locate the target controller.
Verify the PLC station address configured in ProTool matches the physical PLC address setting. Check network wiring and bus termination.
Event ID: 20000: Project download error. Transfer of the configuration project from the engineering PC to the OP3 has failed.
Check the data transfer cable connection between the PC and OP3. Ensure ProTool is using the correct COM port and transfer settings. Retry the download.
Event ID: 30000: Tag read error. The OP3 is unable to read a configured process tag from the PLC.
Verify the tag address configured in ProTool corresponds to a valid address in the PLC program. Check PLC data block or memory area availability.
Event ID: 40000: Alarm buffer overflow. The number of pending alarms has exceeded the panel's alarm buffer capacity.
Acknowledge and clear existing alarms on the panel. Review the alarm configuration in ProTool to reduce unnecessary alarm triggers.
System Error: Internal device fault detected. The OP3 has encountered an unrecoverable internal error.
Cycle power to the panel. If the error persists, perform a factory reset or reload the project configuration. If the fault continues, the unit may require repair or replacement.
Transfer Mode Active: The panel is in transfer mode awaiting a project download and is not displaying the runtime application.
Initiate a project transfer from the ProTool engineering station, or press the appropriate key combination to exit transfer mode and return to normal operation.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP3 (6AV6321-1BA23-1CY0)?

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 the OP3 panel?

The OP3 is configured using Siemens ProTool software. WinCC flexible is not supported for this panel generation.

What is the supply voltage for the 6AV6321-1BA23-1CY0?

The panel operates on a 24 V DC supply voltage.

What is the front panel protection rating of the OP3?

The front panel of the OP3 carries an IP65 protection rating, making it suitable for installation in environments where dust and water spray may be present.

Can the OP3 display graphics or images?

No, the OP3 is a text-based operator panel and can only display alphanumeric characters across its two-line LCD display. It does not support graphical content.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the panel's power connector. Verify polarity is correct and the supply is within the specified voltage range.

Ensure the power supply is providing stable 24 V DC. Check wiring connections and terminal tightness. If the supply is correct and the display remains blank, the internal power circuitry or LCD may be faulty and the unit should be sent for repair.

OP3 shows communication error and cannot connect to PLC

Verify the MPI or PROFIBUS DP cable is properly connected and terminated at both ends. Check that the bus termination resistors are enabled only at the physical ends of the network segment.

Correct any wiring faults and ensure proper bus termination. Confirm the PLC address in the OP3 project matches the actual PLC station address. Restart both the PLC and the OP3 after making corrections.

Panel is stuck in transfer mode and will not run the project

The OP3 enters transfer mode automatically if no valid project is loaded or if it was interrupted during a previous download.

Connect the engineering PC running ProTool and perform a complete project download. Once the transfer completes successfully, the panel will restart and enter runtime mode automatically.

Function keys do not respond to operator input

Inspect the membrane keypad for physical damage, contamination, or deformation. Check whether the issue affects all keys or only specific ones.

Clean the keypad surface with a dry cloth. If individual keys are unresponsive due to membrane damage, the keypad membrane assembly will need to be replaced. Contact a qualified repair technician for membrane replacement.

Alarm messages are not displaying correctly or are truncated

Review the alarm text configuration in ProTool. The OP3 display is limited to 20 characters per line, so alarm messages exceeding this length will be truncated.

Edit the alarm text strings in ProTool to fit within the 20-character per line limit. Re-download the updated project to the panel and verify alarm display in runtime.

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