Siemens 6AV6321-1BA03-1CY0 SIMATIC OP3

Name: Siemens 6AV6321-1BA03-1CY0 SIMATIC OP3
Brand: Siemens
SKU: 6AV6321-1BA03-1CY0
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6321-1BA03-1CY0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6321-1BA03-1CY0 is an OP3 operator panel belonging to the SIMATIC HMI product family from Siemens. It is a compact, text-based operator panel designed for straightforward machine-level operation and monitoring tasks. The OP3 is intended for use with Siemens SIMATIC S7 and S5 programmable logic controllers, providing a cost-effective human-machine interface solution for simple control applications.

The OP3 features a two-line LCD display capable of showing 2 x 20 characters, enabling operators to view process values, status messages, and alarm texts. It is equipped with a membrane keypad for operator input and communicates via an MPI (Multi-Point Interface) or PROFIBUS-DP interface, allowing 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 ProTool software. It supports up to 80 alarm messages and basic recipe management functions.

The SIMATIC OP3 is typically deployed in manufacturing and process automation environments where a simple, reliable text display is sufficient for operator interaction. Common applications include conveyor systems, packaging machinery, pump control stations, and small-scale process monitoring installations. Its compact form factor and low power consumption make it well suited for panel mounting in space-constrained control cabinets.

Technical Specifications

Display Type	LCD, text-based
Display Lines x Characters	2 x 20 characters
Input/Operating Voltage	24 V DC
Power Consumption	3 W (typical)
Communication Interface	MPI / PROFIBUS-DP
Keypad	Membrane keypad
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +70 °C
Relative Humidity	10% to 90% (non-condensing)
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Mounting	Panel mounting
Configuration Software	Siemens ProTool
Certifications	CE, UL

Common Error Codes & System Events

Event ID: 10000: Communication error between OP3 and 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 settings match the configuration in ProTool. Ensure the PLC is in RUN mode.
Event ID: 10001: Configuration data error. The project loaded on the OP3 is incompatible or corrupted.
Re-download the project from ProTool to the OP3. Verify the project was compiled without errors before transfer.
Event ID: 10002: Receive buffer overflow. The OP3 is receiving more data than it can process.
Reduce the polling rate in the ProTool project configuration. Check for excessive variable updates from the PLC.
Event ID: 10003: Tag update error. A configured variable/tag cannot be read from the PLC.
Verify the PLC data block and address referenced in the ProTool project exist and are accessible. Check PLC program for correct data block definitions.
Event ID: 10004: Operating system error on the OP3 panel.
Perform a cold restart of the OP3 by cycling the 24 V DC power supply. If the error persists, reload the operating system firmware via the transfer mode.
Event ID: 10005: Transfer mode active. The panel is waiting for a project download from the configuration PC.
Initiate project transfer from ProTool, or press the appropriate key combination on the OP3 to exit transfer mode and resume normal operation.
Event ID: 10006: No project found on the OP3. The panel has no valid configuration loaded.
Connect a PC running ProTool and download a valid project to the OP3. Ensure the transfer cable and COM port settings are correct.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP3 (6AV6321-1BA03-1CY0)?

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

What software is used to configure the OP3 panel?

The OP3 is configured using Siemens ProTool configuration software. The project is then transferred to the panel via a PC adapter cable connected to the MPI interface.

What is the supply voltage for the 6AV6321-1BA03-1CY0?

The OP3 operates on a 24 V DC supply voltage. Ensure the power source is within the specified tolerance range to avoid panel faults.

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 panel-mount installations where dust and water spray protection is required.

How many alarm messages can the OP3 store?

The SIMATIC OP3 supports up to 80 configurable alarm messages, which can be displayed as text strings on the two-line LCD display.

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply terminals of the OP3. Measure voltage directly at the connector to rule out wiring issues. Inspect the internal fuse if accessible.

Restore correct 24 V DC supply. If voltage is present but display remains blank, the panel may require a firmware reload or the LCD backlight may have failed, requiring panel repair or replacement.

OP3 shows continuous communication error with PLC

Verify the MPI or PROFIBUS-DP cable is properly connected and terminated at both ends. Check that the bus address configured in ProTool matches the OP3 hardware address setting. Confirm the PLC is powered and in RUN mode.

Replace or reseat the communication cable. Correct the bus address in the ProTool project and re-download. Ensure termination resistors are fitted only at the physical ends of the bus segment.

Project transfer from PC to OP3 fails

Check the PC adapter cable connection to the OP3 MPI port. Verify the COM port and transfer speed settings in ProTool match the adapter configuration. Confirm the OP3 is in transfer mode.

Place the OP3 in transfer mode by navigating to the transfer menu or using the key combination specified in the manual. Use a known-good PC adapter cable and verify the correct COM port is selected in ProTool.

Alarm messages display garbled or incorrect text

The project configuration on the OP3 may be outdated or corrupted. Compare the alarm text definitions in the ProTool project with what is displayed on the panel.

Re-compile and re-download the ProTool project to the OP3. Ensure the correct character set and language settings are selected in the project configuration.

Keypad buttons do not respond or respond intermittently

Inspect the membrane keypad for physical damage, contamination, or deformation. Check for any moisture ingress behind the front panel.

Clean the keypad surface with a dry cloth. If the keypad is damaged or worn, the front panel membrane assembly will need to be replaced. Contact a qualified repair technician for membrane replacement.

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