Siemens 6AV6321-1GC14-0MY0 SIMATIC OP3

Name: Siemens 6AV6321-1GC14-0MY0 SIMATIC OP3
Brand: Siemens
SKU: 6AV6321-1GC14-0MY0
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6321-1GC14-0MY0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6321-1GC14-0MY0 is an operator panel belonging to the SIMATIC OP3 series, manufactured by Siemens as part of the SIMATIC HMI product line. It is a compact text-based operator panel designed for straightforward machine-level operator control and monitoring tasks. The OP3 is intended for use with Siemens SIMATIC S7 and S5 PLCs, providing a cost-effective interface solution for basic HMI requirements.

The SIMATIC OP3 features a 2-line LCD text display capable of showing alphanumeric characters, with a membrane keypad for operator input including function keys and system keys. It communicates via the MPI (Multi-Point Interface) protocol, enabling direct connection to SIMATIC S7-200, S7-300, and S7-400 PLCs. The unit operates on a 24 V DC supply and is designed for panel mounting with a compact footprint, making it suitable for integration into control cabinet doors and machine panels. Configuration is performed using the ProTool software package.

The OP3 is widely deployed in manufacturing, packaging, and process automation environments where a simple, reliable text-based operator interface is sufficient. It is particularly suited for small machines and standalone equipment where cost and panel space are constraints. Its compatibility with the broad SIMATIC S7 PLC family makes it a practical choice for retrofitting older installations or building new low-complexity control systems.

Technical Specifications

Display Type	LCD, 2-line text
Display Characters	2 x 20 characters
Input/Operating Voltage	24 V DC
Power Consumption	3 W (typical)
Communication Interface	MPI (Multi-Point Interface)
Keypad	Membrane keypad with function keys and system keys
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
Configuration Software	ProTool
Series/Product Family	SIMATIC OP3

Common Error Codes & System Events

Event ID: 10000: Communication error between OP3 and connected PLC. The operator panel cannot establish or maintain a connection to the configured controller.
Check MPI cable connections and termination resistors. Verify MPI address settings on both the OP3 and the PLC. Ensure the baud rate is correctly configured on both devices.
Event ID: 10001: Connection to PLC interrupted during operation. The OP3 has lost communication with the PLC after a previously established connection.
Inspect MPI cable for damage or loose connectors. Check PLC operating state and power supply. Restart the OP3 and PLC if the connection is not automatically re-established.
Event ID: 20000: Configuration error detected. The project loaded on the OP3 is incompatible or corrupt.
Re-transfer the project from ProTool to the OP3. Verify that the ProTool project is configured for the correct OP3 device type and firmware version.
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 fault persists, reload the operating system firmware using ProTool and re-transfer the project.
Event ID: 50000: Memory error. Insufficient memory available to load or run the configured project.
Reduce the size of the ProTool project by removing unused screens, messages, or variables. Ensure the project does not exceed the memory capacity of the OP3.
Event ID: 60000: Firmware version mismatch. The firmware on the OP3 is incompatible with the transferred project.
Update the OP3 firmware to the version required by the ProTool project, or reconfigure the project using a compatible ProTool version and re-transfer.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP3 (6AV6321-1GC14-0MY0)?

The OP3 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via the MPI interface. It also supports connection to SIMATIC S5 PLCs using appropriate adapters.

What software is used to configure the OP3?

The OP3 is configured using Siemens ProTool software. Projects created in ProTool are transferred to the OP3 via the MPI interface.

What is the supply voltage for the 6AV6321-1GC14-0MY0?

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 mounting in environments where dust and water spray protection is required.

Can the OP3 display graphics or only text?

The OP3 is a text-only operator panel and does not support graphical displays. It is limited to alphanumeric character output on its 2-line LCD.

Troubleshooting

Display remains blank after power on

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

Restore correct 24 V DC supply. If the supply is correct and the display remains blank, inspect the internal fuse and replace if blown. If the unit still does not power on, the internal power supply board may require repair or replacement.

OP3 displays communication error or cannot connect to PLC

Verify MPI cable integrity and connector seating at both the OP3 and PLC ends. Check that the MPI address configured on the OP3 matches the project settings and that the PLC MPI address does not conflict.

Replace or reseat the MPI cable. Correct any MPI address conflicts. Ensure bus termination resistors are correctly placed at both ends of the MPI network. Restart both devices after making changes.

Operator keys not responding or responding incorrectly

Inspect the membrane keypad for physical damage, contamination, or deformation. Test each key systematically using the OP3 key test function if available in the operating system menu.

Clean the keypad surface with a dry cloth. If individual keys are unresponsive due to membrane damage, the keypad membrane assembly requires replacement. Contact a repair specialist for membrane replacement.

Project transfer from ProTool fails

Check the MPI cable connection between the programming device 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 via the system menu. Ensure the MPI adapter or PC adapter is correctly configured. Retry the transfer. If transfer continues to fail, reload the OP3 operating system before re-attempting project transfer.

OP3 repeatedly resets or restarts during operation

Monitor the 24 V DC supply voltage for instability or voltage drops under load. Check for excessive ambient temperature around the unit.

Stabilize the power supply by using a dedicated 24 V DC source with adequate current capacity. Ensure the installation environment is within the specified operating temperature range of 0 °C to 50 °C. Verify that ventilation around the unit is not obstructed.

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