Siemens 6AV6321-1GC04-0CY0 SIMATIC OP3

Name: Siemens 6AV6321-1GC04-0CY0 SIMATIC OP3
Brand: Siemens
SKU: 6AV6321-1GC04-0CY0
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6321-1GC04-0CY0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6321-1GC04-0CY0 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 automation processes and is part of Siemens' established line of operator panels for use with SIMATIC PLCs. The OP3 is a cost-effective, robust panel suited for straightforward visualization tasks in industrial environments.

The 6AV6321-1GC04-0CY0 features a 2-line LCD text display capable of showing alphanumeric characters, with a membrane keypad for operator input. It communicates via the MPI (Multi-Point Interface) and PROFIBUS DP protocols, enabling direct integration with SIMATIC S7-200, S7-300, and S7-400 PLCs. The panel is powered by 24 V DC and is configured using Siemens ProTool or WinCC flexible software. Its compact, panel-mount design and sealed front face provide reliable operation in demanding industrial conditions.

The OP3 is typically deployed in machine-building, manufacturing, and process automation applications where simple text-based status messages, setpoint entry, and alarm display are required. It is well suited for integration into control cabinets and machine panels where space is limited and full graphical HMI capability is not required. Industries such as packaging, material handling, and general factory automation commonly use this panel for local operator interaction with SIMATIC-based control systems.

Technical Specifications

Display Type	LCD, 2-line text
Characters per Line	16
Input/Operating Voltage	24 V DC
Power Consumption	3 W (typical)
Communication Interface	MPI, PROFIBUS DP
Keypad	Membrane keypad with function keys
IP Rating (Front)	IP65
IP Rating (Rear)	IP20
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
Mounting	Panel mounting
Certifications	CE, UL
Configuration Software	ProTool, WinCC flexible

Common Error Codes & System Events

Event ID: 10000: Configuration error: The configuration data loaded onto the panel is invalid or incompatible with the connected PLC.
Re-download the project using ProTool or WinCC flexible and verify PLC compatibility settings.
Event ID: 10001: Communication error: No connection established to the configured PLC via MPI or PROFIBUS DP.
Check MPI/PROFIBUS cable connections, verify bus address settings, and confirm PLC is powered and operational.
Event ID: 10002: Data record error: A data record transfer between the HMI and PLC has failed.
Check PLC program for correct data block configuration and verify communication parameters match the HMI project settings.
Event ID: 10003: Alarm buffer overflow: The number of pending alarms exceeds the panel's alarm buffer capacity.
Acknowledge and clear existing alarms. Review PLC logic to reduce simultaneous alarm generation.
Event ID: 10004: System memory error: Internal memory fault detected during startup or operation.
Perform a factory reset of the panel and re-download the configuration. If the fault persists, the unit may require repair or replacement.
Event ID: 10005: Watchdog timeout: The panel's internal watchdog has triggered due to a system hang or communication loss.
Cycle power to the panel. Check for electromagnetic interference on the MPI/PROFIBUS line and verify cable shielding.
Event ID: 10006: PLC tag address error: A configured tag address in the HMI project does not exist or is out of range in the connected PLC.
Review the HMI project tag configuration in ProTool or WinCC flexible and correct any invalid PLC address references.

Frequently Asked Questions

Which PLCs are compatible with the OP3 (6AV6321-1GC04-0CY0)?

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?

The OP3 is configured using Siemens ProTool or WinCC flexible engineering software. The project is then downloaded to the panel via the MPI interface.

What is the supply voltage for the 6AV6321-1GC04-0CY0?

The panel operates on a 24 V DC supply voltage.

What is the front panel protection rating of the OP3?

The front face of the OP3 carries an IP65 protection rating, making it resistant to dust and water jets, suitable for panel-mount installation in industrial environments.

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 image display.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the panel's power connector. Verify the supply is within the specified tolerance and measure current draw.

Ensure the 24 V DC supply is stable and correctly wired. If the supply is confirmed good and the display remains blank, the internal power supply or display unit may be faulty and the panel should be sent for repair.

'No connection to PLC' message displayed on panel

Verify MPI or PROFIBUS DP cable connections at both the panel and PLC. Check that the bus address configured on the OP3 matches the project settings and that no address conflicts exist on the bus.

Correct any wiring faults, ensure proper bus termination resistors are in place at both ends of the cable, and confirm the PLC MPI/PROFIBUS port is active and set to the correct baud rate.

Panel does not accept configuration download

Check the MPI cable connection between the programming device and the OP3. Confirm the correct COM port and transfer settings are selected in ProTool or WinCC flexible.

Switch the panel to transfer mode manually via the panel menu, verify the MPI address and baud rate match the project settings, and retry the download. Replace the MPI cable if communication errors persist.

Operator keypad inputs are not responding

Inspect the membrane keypad for physical damage, contamination, or deformation. Attempt to trigger key inputs and observe whether any response occurs on the display.

Clean the keypad surface with a dry cloth. If individual keys are unresponsive due to membrane damage, the keypad assembly or the entire panel unit will need to be replaced.

Panel repeatedly resets or reboots during operation

Monitor the 24 V DC supply for voltage dips or instability under load. Check for electromagnetic interference sources near the MPI/PROFIBUS cable routing.

Stabilize the power supply and ensure adequate current capacity. Improve cable shielding and grounding. If reboots continue with a stable supply, the panel may have an internal hardware fault requiring repair.

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