Siemens 6AV3971-1PA13-0AA0 SIMATIC OP3

Name: Siemens 6AV3971-1PA13-0AA0 SIMATIC OP3
Brand: Siemens
SKU: 6AV3971-1PA13-0AA0
Price: 137.00 EUR
Availability: InStock

€ 137,00

Condition

Clear

SKU: 6AV3971-1PA13-0AA0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV3971-1PA13-0AA0 is an operator panel belonging to the SIMATIC OP3 series, manufactured by Siemens as part of its SIMATIC HMI product line. This compact text-based operator panel is designed for straightforward machine-level human-machine interface applications, providing operators with a simple and reliable means of monitoring and controlling industrial processes. The OP3 is a predecessor-generation panel suited for integration into existing SIMATIC automation environments.

The SIMATIC OP3 features a two-line LCD text display capable of showing alphanumeric characters, enabling clear presentation of process values, status messages, and operator prompts. It communicates via the MPI (Multi-Point Interface) protocol, allowing direct connection to Siemens S7-200, S7-300, and S7-400 PLCs without additional hardware. The panel includes a membrane keypad with function keys for operator input, and is configured using Siemens ProTool configuration software. It operates on a 24 V DC supply and is built for panel-mount installation in industrial enclosures.

The OP3 is typically deployed in manufacturing, machine building, and process automation applications where a cost-effective, compact HMI solution is required. It is well suited for small machines and standalone equipment where basic text-based status display and operator input are sufficient. Industries such as packaging, material handling, and general factory automation commonly use this panel as a local operator interface on control cabinets.

Technical Specifications

Display Type	LCD text display
Display Lines	2 lines
Characters per Line	20 characters
Input/Operating Voltage	24 V DC
Communication Interface	MPI (Multi-Point Interface)
Configuration Software	ProTool
Mounting	Panel mount
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
Certifications	CE, UL
Series/Product Family	SIMATIC OP3

Common Error Codes & System Events

Event ID: 10000: No connection to the configured PLC. The panel cannot establish communication with the S7 controller via MPI.
Check MPI cable connections and termination resistors. Verify MPI address settings on both the panel and PLC. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Communication error detected on the MPI bus. Data transfer between the OP3 and the PLC has been interrupted.
Inspect MPI bus wiring for damage or loose connectors. Check that bus termination is correctly applied at both ends of the MPI network. Verify that only one bus master is active.
Event ID: 20000: Configuration data on the panel is missing or corrupted. The panel cannot load the project data from internal memory.
Re-download the project configuration from ProTool to the OP3. If the problem persists, perform a memory reset and reload the project.
Event ID: 20001: Version conflict between the configuration project and the OP3 firmware. The loaded project was created with an incompatible ProTool version.
Update the OP3 firmware to match the ProTool version used to create the project, or recreate the project using a compatible ProTool version.
Event ID: 40000: Operator input buffer overflow. Too many keystrokes were entered in a short period and the input queue is full.
Reduce the frequency of operator inputs. Check the application logic for loops that may be causing repeated input events.
Event ID: 50000: Internal device error detected. A hardware fault has been identified within the OP3 panel.
Cycle power to the panel. If the error persists, the panel hardware may require service or replacement.
Event ID: 60000: Tag limit exceeded. The number of configured tags in the project exceeds the capacity supported by the OP3.
Review the ProTool project and reduce the number of configured tags to within the OP3 specification limits.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP3?

The OP3 is compatible with Siemens S7-200, S7-300, and S7-400 PLCs via the MPI interface. It can also be used with SIMATIC S5 controllers using appropriate adapters and configuration.

What software is used to configure the OP3 panel?

The OP3 is configured using Siemens ProTool configuration software. Projects are created on a PC and downloaded to the panel via the MPI interface or a serial programming cable.

What is the supply voltage for the 6AV3971-1PA13-0AA0?

The panel operates on a 24 V DC supply voltage, which is standard for SIMATIC HMI panels and compatible with most industrial control cabinet power supplies.

What is the front panel protection rating of the OP3?

The OP3 provides an IP65 protection rating at the front face when correctly installed in a panel cutout, making it suitable for environments with dust and water spray.

Can the OP3 display graphics or only text?

The OP3 is a text-only display panel and does not support graphical content. It displays alphanumeric characters across two lines of 20 characters each.

Troubleshooting

Display remains blank after power on

Check that 24 V DC is present at the power supply terminals of the panel. Inspect the supply cable and connector for damage or loose connections.

Restore correct 24 V DC supply to the panel. If voltage is confirmed present and the display remains blank, the internal power supply or display unit may be faulty and the panel should be sent for repair or replacement.

Panel shows 'No connection to PLC' message continuously

Verify the MPI cable is securely connected at both the OP3 and PLC ends. Check the MPI address configured in the ProTool project matches the address set on the PLC. Confirm bus termination resistors are correctly placed.

Correct any address mismatches in the ProTool configuration and re-download the project. Replace the MPI cable if damaged. Ensure bus termination is active only at the two physical ends of the MPI network.

Panel does not accept new project download

Check that the PC and OP3 are connected via the correct programming cable and that the COM port settings in ProTool match the cable type. Verify the panel is in transfer mode.

Place the OP3 in transfer mode by navigating to the system menu. Confirm the correct cable type and COM port are selected in ProTool. Retry the download. If unsuccessful, perform a memory reset on the panel before attempting again.

Function keys do not respond to operator input

Inspect the membrane keypad for physical damage, contamination, or deformation. Check the ProTool project to confirm that function key assignments are correctly configured.

Clean the keypad surface if contaminated. If keys are physically damaged, the membrane keypad assembly requires replacement. If the keypad is intact, review and correct the key assignments in the ProTool project and re-download.

Incorrect or garbled characters displayed on screen

This may indicate a corrupted project configuration or a communication error causing incorrect data to be displayed. Check the MPI connection integrity and review the tag configuration in ProTool.

Re-download the project configuration to the panel. If the issue persists after re-download, perform a full memory reset and reload. Persistent display corruption may indicate a hardware fault requiring panel repair.

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