Siemens 6AV3971-1XD03-0AB0 SIMATIC OP3

Name: Siemens 6AV3971-1XD03-0AB0 SIMATIC OP3
Brand: Siemens
SKU: 6AV3971-1XD03-0AB0
Price: 150.00 EUR
Availability: InStock

€ 150,00

Condition

Clear

SKU: 6AV3971-1XD03-0AB0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV3971-1XD03-0AB0 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 visualization and operator control tasks. The OP3 is intended for use with Siemens SIMATIC S7 and S5 PLCs, providing a cost-effective interface solution for simple process monitoring and control.

The SIMATIC OP3 features a two-line LCD text display capable of showing alphanumeric characters, enabling operators to read process values, status messages, and alarms. It communicates via the MPI (Multi-Point Interface) or PPI (Point-to-Point Interface) protocol, allowing direct connection to S7-200 and S7-300 PLCs without additional hardware. The panel is configured using Siemens ProTool software and supports a defined number of function keys for direct operator input. It operates on a 24 V DC supply and is built for panel mounting with a compact footprint suitable for space-constrained control cabinets.

The OP3 is widely used in manufacturing, machine building, and process automation environments where simple text-based HMI functionality is sufficient. It is commonly found on standalone machines, conveyor systems, and small automation cells where operators need to monitor a limited set of process variables and acknowledge alarms. Its compact size, low power consumption, and compatibility with the SIMATIC S7 ecosystem make it a practical choice for retrofit and new installations in light industrial applications.

Technical Specifications

Display Type	LCD, 2-line text display
Display Characters	2 lines x 20 characters
Input/Operating Voltage	24 V DC
Communication Interface	MPI, PPI
PLC Compatibility	SIMATIC S7-200, S7-300, S5
Configuration Software	ProTool
Mounting	Panel mounting
Protection Rating (Front)	IP65
Protection Rating (Rear)	IP20
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +70 °C
Relative Humidity	10% to 90%, non-condensing
Certifications	CE, UL
Series/Product Family	SIMATIC OP3

Common Error Codes & System Events

Event ID: 10000: No connection to PLC. The operator panel cannot establish communication with the configured PLC.
Check MPI/PPI cable connections and termination resistors. Verify PLC address settings match the OP3 configuration. Ensure PLC is powered and in RUN or STOP mode.
Event ID: 10001: Communication timeout. The connection to the PLC was interrupted during operation.
Inspect the communication cable for damage or loose connectors. Verify MPI bus termination and check for address conflicts on the MPI network.
Event ID: 20000: Configuration transfer error. An error occurred while transferring the project from the configuration PC to the OP3.
Check the PC-to-OP3 transfer cable and port settings. Ensure ProTool project is compiled without errors before transfer. Retry the download.
Event ID: 40000: System memory error. Internal memory fault detected on the operator panel.
Perform a complete reset of the operator panel and re-download the project. If the fault persists, the unit may require hardware repair or replacement.
Event ID: 50000: Operating system error. An internal firmware or OS-level fault has occurred.
Power cycle the operator panel. If the error recurs, reload the operating system firmware via the transfer interface using ProTool or Step 7.
Event ID: 60000: Tag update error. One or more configured tags cannot be read from the PLC.
Verify that the PLC data blocks and addresses referenced in the OP3 project exist and are accessible. Check PLC program for correct DB structure.
Event ID: 70000: 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 PLC program to identify the root cause of the alarm storm and resolve the underlying process issue.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP3 (6AV3971-1XD03-0AB0)?

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

What software is required to configure the OP3?

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

What communication interfaces does the OP3 support?

The OP3 supports MPI (Multi-Point Interface) and PPI (Point-to-Point Interface) communication protocols for connection to Siemens PLCs.

What is the supply voltage for the 6AV3971-1XD03-0AB0?

The operator panel requires a 24 V DC power supply for operation.

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.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Measure voltage with a multimeter to confirm it is within the acceptable range. Inspect internal fuse if accessible.

Ensure the power supply is providing stable 24 V DC. Replace any blown fuse with the correct rating. If the display remains blank with confirmed power, the unit may require internal repair or display replacement.

OP3 shows 'No connection to PLC' message continuously

Verify the MPI or PPI cable is correctly connected to both the OP3 and the PLC. Check that the PLC address configured in the ProTool project matches the actual PLC MPI address. Inspect bus termination at both ends of the MPI network.

Correct any address mismatches in the ProTool project and re-download. Replace damaged cables. Ensure bus termination resistors are active only at the two physical ends of the MPI bus.

Project download from PC to OP3 fails

Check the PC-to-OP3 transfer cable connection and verify the correct COM port is selected in ProTool. Confirm the OP3 is in transfer mode before initiating the download.

Switch the OP3 to transfer mode via the panel menu. Select the correct serial port in ProTool transfer settings. Replace the transfer cable if it is damaged or use a USB-to-serial adapter with verified driver compatibility.

Function keys do not respond to operator input

Check whether the panel is in transfer mode or loader mode, which disables normal operation. Verify the ProTool project has correctly assigned functions to the keys.

Return the panel to normal operating mode. Re-download the project with correct key assignments. If keys remain unresponsive, inspect the keypad membrane for physical damage and replace if necessary.

Alarm messages display incorrectly or show garbled text

Compare the alarm text configuration in the ProTool project with what is displayed on the panel. Check that the correct character set is selected and that the project was fully compiled before download.

Recompile the ProTool project ensuring no configuration errors, then perform a full project download to the OP3. Verify that alarm text lengths do not exceed the 20-character display width per line.

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