Siemens 6AV6640-0AA00-0AX0 OP 73micro

€ 325,00

SKU: 6AV6640-0AA00-0AX0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6640-0AA00-0AX0 is the OP 73micro operator panel, part of the SIMATIC HMI Micro Panel family. It is a compact, text-based operator panel designed for simple machine-level human-machine interface tasks. This unit provides a cost-effective solution for displaying process values and entering operator commands in straightforward automation environments.

The OP 73micro features a 3-line LCD text display capable of showing alphanumeric characters, with a membrane keypad for operator input. It communicates via a PPI (Point-to-Point Interface) or MPI (Multi-Point Interface) serial connection, making it directly compatible with Siemens S7-200 and S7-300 PLCs. The panel operates on a 24 V DC supply and is configured using WinCC flexible Micro engineering software. Its compact housing is rated IP65 on the front face, providing protection against dust and water jets in industrial environments.

The OP 73micro is widely used in small machinery, conveyor systems, packaging equipment, and building automation where a simple text-based interface is sufficient. Its low cost and ease of integration with the S7-200 PLC family make it a practical choice for OEMs building compact control panels. The panel is suited for industries including food and beverage, material handling, and light manufacturing.

Technical Specifications

Display Type	LCD text display
Display Lines	3 lines
Characters per Line	12 characters
Input/Operating Voltage	24 V DC
Power Consumption	2.5 W (typical)
Communication Interface	PPI / MPI (RS-485)
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
Dimensions (W x H x D)	120 mm x 80 mm x 35 mm
Certifications	CE, UL
Engineering Software	WinCC flexible Micro

Common Error Codes & System Events

System Event 10000: Communication error between the HMI panel and the connected PLC. The connection to the controller has been lost or cannot be established.
Check the RS-485 cable connections and termination resistors. Verify the PLC address and baud rate settings match the HMI configuration. Ensure the PLC is powered and in RUN mode.
System Event 10001: PLC address conflict or incorrect station address configured on the HMI panel.
Verify the MPI/PPI station address in the HMI project settings. Ensure no two devices share the same address on the network.
System Event 10002: Timeout error: the HMI did not receive a response from the PLC within the expected time window.
Check cable integrity and connector pins on the RS-485 interface. Reduce network cable length or check for electromagnetic interference sources near the cable.
System Event 20000: Configuration or project download error. The project loaded onto the panel is incompatible or corrupted.
Re-download the project from WinCC flexible Micro. Ensure the correct panel type is selected in the engineering software before compiling and transferring.
System Event 40000: Operating voltage out of range. The 24 V DC supply voltage has dropped below or exceeded the permissible limits.
Measure the supply voltage at the panel connector. Ensure the power supply unit provides a stable 24 V DC within the specified tolerance range.
System Event 70010: Internal device error or hardware fault detected within the operator panel.
Cycle power to the panel. If the error persists, perform a factory reset or replace the unit, as this may indicate an internal hardware failure.

Frequently Asked Questions

Which PLCs are compatible with the OP 73micro (6AV6640-0AA00-0AX0)?

The OP 73micro is primarily designed for use with Siemens S7-200 PLCs via PPI protocol and S7-300 PLCs via MPI protocol. It is not compatible with S7-1200 or S7-1500 PLCs.

What software is used to configure and program the OP 73micro?

The OP 73micro is configured using Siemens WinCC flexible Micro engineering software. This software allows creation of text screens, alarm messages, and variable connections to the PLC.

What is the supply voltage requirement for the 6AV6640-0AA00-0AX0?

The panel requires a 24 V DC supply voltage. The permissible voltage range is typically 20.4 V DC to 28.8 V DC (24 V DC -15% / +20%).

What is the front panel protection rating of the OP 73micro?

The front face of the OP 73micro is rated IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for panel-mounted industrial applications.

Can the OP 73micro display graphical content or images?

No, the OP 73micro is a text-only operator panel. It does not support graphical displays, bitmap images, or trend curves. It is limited to alphanumeric text across its 3-line LCD display.

Troubleshooting

Display remains blank after power is applied

Check the 24 V DC supply voltage at the panel power connector using a multimeter. Verify polarity is correct and voltage is within the 20.4–28.8 V DC range.

Correct the supply voltage or replace the power supply unit if it is out of range. If voltage is correct and display remains blank, the internal LCD or power circuitry may be faulty and the unit should be repaired or replaced.

'No connection to PLC' message displayed on screen

Inspect the RS-485 communication cable between the HMI and PLC for damage, loose connectors, or incorrect wiring. Verify the PPI/MPI address and baud rate settings in the HMI project match the PLC configuration.

Replace or reseat the communication cable. Correct address and baud rate settings in WinCC flexible Micro and re-download the project. Ensure bus termination resistors are correctly placed at both ends of the network.

Project download from WinCC flexible Micro fails

Verify the PC-to-panel transfer cable (PC/PPI cable or USB-to-PPI adapter) is correctly connected and the correct COM port is selected in the software. Check that the panel is in transfer mode.

Place the panel in transfer mode by navigating to the system menu. Reinstall the PC/PPI cable driver if the COM port is not recognized. Ensure the WinCC flexible Micro project is compiled without errors before attempting transfer.

Keypad buttons do not respond or are intermittent

Inspect the membrane keypad surface for physical damage, contamination, or wear. Test each key systematically using a diagnostic screen if available in the project.

Clean the keypad surface with a dry cloth. If keys remain unresponsive, the membrane keypad assembly may be worn or damaged internally and the panel should be sent for repair or replacement.

Incorrect or garbled characters displayed on screen

This may indicate a corrupted project file on the panel or a communication error causing incorrect data to be displayed from the PLC.

Re-download the HMI project from WinCC flexible Micro to overwrite any corrupted data. If the issue persists with correct PLC values, perform a factory reset of the panel and re-download the project.

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