Siemens 6AV6640-0BA11-0AX0 OP 73micro

€ 263,00

SKU: 6AV6640-0BA11-0AX0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6640-0BA11-0AX0 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, offering a 4-line monochrome LCD display. This unit is manufactured by Siemens and is intended for cost-effective, space-saving HMI solutions in small automation systems.

The OP 73micro features a 4-line x 20-character STN monochrome LCD display and is operated via a membrane keypad with function keys. It communicates via a PROFIBUS DP or MPI interface, allowing direct integration with Siemens S7-200, S7-300, and S7-400 PLCs. The panel is configured using WinCC flexible Micro or STEP 7 Micro/WIN software, and supports a limited number of process tags, alarms, and recipe entries suited to its compact design.

The OP 73micro is widely used in small machinery, conveyor systems, packaging equipment, and simple process control applications where a full graphical HMI is not required. Its compact form factor and low power consumption make it suitable for panel door mounting in tight enclosures. Industries such as food and beverage, material handling, and general manufacturing commonly deploy this panel for basic operator interaction and status display.

Technical Specifications

Display Type	STN monochrome LCD
Display Lines	4 lines x 20 characters
Input Voltage	24 V DC
Power Consumption	2.5 W (typical)
Communication Interface	MPI / PROFIBUS DP (RS-485)
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
Certifications	CE, UL, cULus
Configuration Software	WinCC flexible Micro
Compatible PLCs	SIMATIC S7-200, S7-300, S7-400

Common Error Codes & System Events

Event ID: 10000: Communication error between the OP 73micro and the connected PLC. The panel cannot establish or maintain a connection.
Check MPI/PROFIBUS cable connections and termination resistors. Verify the PLC address settings match the panel configuration. Ensure the PLC is in RUN mode.
Event ID: 10001: Configured PLC address not found on the bus. The panel is unable to locate the target controller.
Verify the PLC station address in WinCC flexible matches the physical PLC address setting. Check bus cable integrity and termination.
Event ID: 20000: Project download error. The configuration project could not be transferred to the panel successfully.
Check the PC-to-panel communication cable. Ensure WinCC flexible Micro version is compatible with the panel firmware. Retry the download.
Event ID: 40000: Tag acquisition error. One or more configured process tags cannot be read from the PLC.
Verify the PLC data block addresses and variable types match the tag configuration in WinCC flexible. Check PLC program for correct data area definitions.
Event ID: 50000: System memory low. The panel's available memory for runtime operation is insufficient.
Reduce the number of configured tags, alarms, or recipe entries in the project. Re-download the optimized project to the panel.
Event ID: 60000: Panel operating system or firmware error detected during startup self-test.
Perform a factory reset of the panel. If the error persists, update the panel firmware using the appropriate Siemens ProSave tool or contact Siemens support.

Frequently Asked Questions

Which PLCs are compatible with the OP 73micro (6AV6640-0BA11-0AX0)?

The OP 73micro is compatible with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interface. It can also communicate with S7-200 via the PPI protocol.

What software is used to configure the OP 73micro?

The OP 73micro is configured using Siemens WinCC flexible Micro software. For S7-200 applications, configuration can also be performed within STEP 7 Micro/WIN.

What is the supply voltage for the OP 73micro?

The OP 73micro requires a 24 V DC supply voltage for operation.

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

The front panel of the OP 73micro carries an IP65 protection rating, making it suitable for panel door mounting in environments with dust and water spray exposure.

Does the OP 73micro support graphical displays or images?

No, the OP 73micro is a text-based operator panel with a 4-line x 20-character monochrome LCD display. It does not support graphical screens or bitmap images.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check for correct polarity. Inspect the supply cable for damage or loose connections.

Ensure a stable 24 V DC supply is connected with correct polarity. If the supply is confirmed good and the display remains blank, the internal power supply or LCD may be faulty and the unit should be sent for repair or replacement.

Panel displays 'No connection to PLC' or communication error message

Check the MPI or PROFIBUS DP cable between the panel and PLC. Verify bus termination resistors are correctly placed at both ends of the bus. Confirm the PLC address in the panel project matches the physical PLC address.

Replace or reseat the communication cable. Correct the PLC address settings in WinCC flexible and re-download the project. Ensure only the two physical end nodes on the bus have termination resistors enabled.

Panel does not respond to keypad input

Inspect the membrane keypad for physical damage, contamination, or worn key surfaces. Test each key systematically in the panel's transfer mode or a diagnostic screen if available.

Clean the keypad surface with a dry cloth. If specific keys are unresponsive due to wear or damage, the membrane keypad assembly should be replaced. Contact a qualified repair technician for keypad replacement.

Project download from PC to panel fails

Verify the PC-to-panel communication cable (typically a PC/PPI or MPI cable) is correctly connected and the correct COM port is selected in WinCC flexible. Check that the panel is in transfer mode.

Place the panel in transfer mode by navigating to the transfer settings on the panel. Ensure the correct cable type and port settings are configured in WinCC flexible Micro. Retry the download; if it fails, try a different cable or USB-to-serial adapter.

Alarm messages are not displayed on the panel

Check the alarm configuration in WinCC flexible to confirm alarm tags are correctly mapped to PLC addresses. Verify the PLC program is writing the correct bit or word values to trigger alarms.

Correct any mismatched tag addresses between the WinCC flexible project and the PLC program. Re-download the updated project to the panel and test alarm triggering from the PLC side.

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