Siemens 6AV6341-1DC23-1AY0 OP 27

SKU: 6AV6341-1DC23-1AY0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6341-1DC23-1AY0 is an operator panel belonging to the SIMATIC OP 27 series, part of Siemens' established SIMATIC HMI product line. This unit functions as a graphical operator panel designed for machine-level human-machine interface applications, providing operators with process visualization and control capabilities. It is a compact panel-mount device intended for integration into control cabinet doors or operator stations.

The OP 27 features a monochrome or color STN LCD display with a resolution of 320 x 240 pixels (QVGA), supporting graphical representation of process data, alarms, and trends. The panel includes a membrane keypad with function keys, system keys, and numeric/alphanumeric input capability, eliminating the need for a separate keyboard in many applications. Communication is handled via MPI (Multi-Point Interface) and PROFIBUS-DP interfaces, enabling direct connection to SIMATIC S7-300 and S7-400 PLCs. The unit operates on a 24 V DC supply and is rated to IP65 on the front face for protection against dust and water ingress.

The SIMATIC OP 27 is widely used in manufacturing automation, process control, and machine building industries where a reliable and compact operator interface is required. It is commonly found on packaging machinery, conveyor systems, press lines, and general-purpose industrial machines. Its compatibility with the SIMATIC S7 controller family and support for ProTool configuration software make it a practical choice for system integrators working within the Siemens automation ecosystem.

Technical Specifications

Display Type	STN LCD
Display Resolution	320 x 240 pixels (QVGA)
Display Size	5.7 inch
Input Voltage	24 V DC
Power Consumption	Approx. 15 W
Communication Interface	MPI, PROFIBUS-DP
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
Certifications	CE, UL
Series	SIMATIC OP 27

Common Error Codes and System Events

Event ID: 10000: Communication error between the OP panel and the connected PLC. The panel cannot establish or maintain a connection to the configured controller.
Check MPI or PROFIBUS-DP cable connections and termination resistors. Verify the PLC address and baud rate settings match the panel configuration. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Connection to the PLC was interrupted during operation.
Inspect the communication cable for damage or loose connectors. Check for address conflicts on the MPI or PROFIBUS network. Restart both the panel and the PLC if the connection does not recover automatically.
Event ID: 10002: Configured tag or variable address not found in the connected PLC.
Verify that the PLC program contains the data blocks and addresses referenced in the OP 27 project. Re-download the project to the panel using ProTool if addresses have changed.
Event ID: 20000: Internal system error on the operator panel. A software or firmware fault has been detected.
Perform a panel restart. If the error persists, reload the project via ProTool. Consider a factory reset if the panel remains non-functional.
Event ID: 40000: Project download error. Transfer of the configuration project to the panel was not completed successfully.
Check the data transfer cable and PC interface settings. Ensure ProTool is configured with the correct transfer parameters and retry the download.
Event ID: 50000: 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 alarm configuration in ProTool to reduce unnecessary alarm triggers or increase acknowledgment frequency.
Event ID: 60000: Panel operating system or firmware version mismatch with the loaded project.
Update the panel firmware to the version compatible with the ProTool project version, or recompile and re-download the project using the matching ProTool version.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP 27?

The OP 27 is primarily designed for use with Siemens SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS-DP interfaces. It can also communicate with S5 controllers and third-party devices depending on the communication driver configured in ProTool.

What software is used to configure the OP 27?

The OP 27 is configured using Siemens ProTool software. WinCC flexible can also be used in some versions. The project is then transferred to the panel via a PC adapter cable connected to the MPI interface.

What is the supply voltage for the 6AV6341-1DC23-1AY0?

The panel operates on a 24 V DC supply voltage. Ensure the power supply can deliver sufficient current, typically around 0.7 A, to power the unit reliably.

What is the front panel protection rating of the OP 27?

The front face of the OP 27 is rated to IP65, providing protection against dust ingress and low-pressure water jets. The rear of the unit is rated IP20.

Can the OP 27 display graphical objects and trend curves?

Yes, the OP 27 supports graphical display of process values including bar graphs, trend curves, and alarm lists. The 320 x 240 pixel QVGA display allows for structured screen layouts configured in ProTool.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel's power connector. Check that polarity is correct and voltage is within the specified range. Inspect the internal fuse if accessible.

Correct any wiring errors or supply voltage issues. If the supply voltage is confirmed correct and the display remains blank, the internal power supply board or backlight may be faulty and the unit may require repair or replacement.

Panel displays 'No connection to PLC' or communication error on startup

Check the MPI or PROFIBUS-DP cable between the panel and PLC. Verify bus termination is correctly applied at both ends of the network. Confirm the PLC node address and baud rate match the panel project settings.

Replace or reseat the communication cable. Correct address or baud rate mismatches in the ProTool project and re-download. Ensure only one active bus termination exists at each end of the network segment.

Touchscreen or keypad inputs are not responding correctly

For membrane keypad issues, inspect the keypad overlay for physical damage or contamination beneath the keys. Verify that the panel project correctly maps function keys to the intended actions.

Clean the keypad surface. If individual keys are non-responsive due to membrane damage, the keypad overlay or front panel assembly may need replacement. Re-download the project to rule out configuration errors.

Project download from PC to panel fails or times out

Check the PC adapter cable connection to the panel's MPI port. Verify the COM port settings in ProTool match the adapter being used. Confirm the panel is in transfer mode.

Switch the panel to transfer mode via the panel's start menu. Use the correct Siemens PC adapter (e.g., PC Adapter USB or MPI adapter). Reinstall the PC adapter driver if the COM port is not recognized by the PC.

Alarm messages appear on screen but cannot be acknowledged

Check whether the alarm requires a PLC bit acknowledgment in addition to operator acknowledgment on the panel. Review the alarm configuration in ProTool for acknowledgment group settings.

Ensure the PLC program resets the alarm trigger bit after the fault condition is cleared. Reconfigure the alarm acknowledgment type in ProTool if operator-only acknowledgment is intended, then re-download the project.

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