Siemens 6AV6355-1DA00-0DM5 OP 77B

€ 1.111,90

SKU: 6AV6355-1DA00-0DM5 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6355-1DA00-0DM5 is the OP 77B operator panel, part of the SIMATIC HMI Basic Panels family from Siemens. This compact operator panel is designed for machine-level human-machine interface applications, providing a straightforward text-based display for process visualization and operator control. It belongs to the established SIMATIC HMI product line, which is widely deployed in industrial automation environments worldwide.

The OP 77B features a 4-line text display capable of showing alphanumeric characters, enabling operators to monitor process values and enter parameters directly at the machine. It communicates via MPI and PROFIBUS DP interfaces, allowing direct integration with SIMATIC S7-200, S7-300, and S7-400 PLCs without the need for additional gateways. The panel is configured using WinCC flexible software and supports recipe management, alarm logging, and multilingual text display. Its compact and robust housing is rated IP65 on the front face, making it suitable for panel-door mounting in industrial enclosures.

The OP 77B is typically used in manufacturing, packaging, and process industries where a cost-effective, text-based operator interface is sufficient for machine control and monitoring. It is well suited for applications such as conveyor systems, pumping stations, and simple machine controls where graphical visualization is not required. The panel's compatibility with the SIMATIC S7 PLC family makes it a natural fit for existing Siemens automation architectures.

Technical Specifications

Display Type	Text display, 4-line alphanumeric
Display Characters per Line	20 characters
Input/Operating Voltage	24 V DC
Power Consumption	4.5 W (typical)
Communication Interface	MPI, PROFIBUS DP
IP Protection Rating (Front)	IP65
IP Protection 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, cULus
Configuration Software	WinCC flexible 2005 or higher
Compatible PLCs	SIMATIC S7-200, S7-300, S7-400

Common Error Codes & System Events

Event ID: 10000: Communication error between the OP 77B and the connected PLC. The panel cannot establish or maintain a connection to the controller.
Check MPI/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 has been interrupted during operation.
Inspect the communication cable for damage or loose connectors. Verify bus termination at both ends of the PROFIBUS/MPI segment. Check for address conflicts on the bus.
Event ID: 20000: Configuration or project download error. The project data on the panel is invalid or corrupted.
Re-download the project from WinCC flexible to the panel. Ensure the WinCC flexible version is compatible with the panel firmware version.
Event ID: 40000: Operator panel internal hardware fault detected.
Perform a panel reset. If the fault persists, check the 24 V DC supply voltage at the power connector. Contact Siemens technical support or arrange for panel repair/replacement.
Event ID: 50000: Firmware update error or incompatible firmware version detected on the panel.
Re-flash the panel firmware using the ProSave tool or WinCC flexible. Ensure the firmware version is compatible with the project configuration.
System Alarm: Tag update error: A configured tag cannot be read from or written to the PLC. The tag address may be invalid or out of range.
Verify the tag addresses in the WinCC flexible project match the actual PLC data block or memory area addresses. Check PLC program for correct data area definitions.
System Alarm: No project: No valid project is loaded on the operator panel.
Download a valid project to the panel using WinCC flexible via the MPI or PROFIBUS DP interface. Ensure the transfer settings are correctly configured.

Frequently Asked Questions

Which PLCs are compatible with the OP 77B (6AV6355-1DA00-0DM5)?

The OP 77B is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP communication interfaces. It can also communicate with SIMATIC S5 controllers using appropriate protocol settings.

What software is used to configure and program the OP 77B?

The OP 77B is configured using Siemens WinCC flexible 2005 or later versions. Projects are downloaded to the panel via the MPI or PROFIBUS DP interface.

What is the supply voltage for the OP 77B?

The OP 77B requires a 24 V DC power supply. The typical power consumption is approximately 4.5 W.

What is the front panel protection rating of the OP 77B?

The front face of the OP 77B is rated IP65, making it resistant to dust ingress and low-pressure water jets, suitable for panel-door mounting in industrial environments.

Can the OP 77B display graphics or only text?

The OP 77B is a text-based operator panel and does not support graphical display. It shows alphanumeric characters across 4 lines of 20 characters each.

Troubleshooting

Panel display remains blank after power on

Measure the 24 V DC supply voltage at the panel power connector. Check for correct polarity. Inspect the supply cable and connector for damage.

Ensure the 24 V DC supply is within the specified voltage range and correctly connected. If the supply is correct and the display remains blank, the internal power supply or display unit may be faulty and the panel should be sent for repair.

Communication fault displayed; panel cannot connect to PLC

Check the MPI or PROFIBUS DP cable connections at both the panel and PLC ends. Verify bus termination resistors are enabled at both ends of the segment. Confirm the panel and PLC addresses and baud rate settings match.

Correct any wiring faults, enable bus termination at segment ends, and ensure address and baud rate settings are consistent between the panel and PLC. Re-download the project if configuration changes are made.

Project download fails from WinCC flexible to the panel

Verify the communication cable between the PC and the panel is correctly connected. Check that the transfer mode is enabled on the panel. Confirm the WinCC flexible version supports the OP 77B panel type.

Enable transfer mode on the panel via the panel menu. Use a compatible MPI or PROFIBUS DP PC adapter cable. Ensure WinCC flexible 2005 or a later compatible version is installed on the programming PC.

Alarm messages appear on the panel but do not clear

Identify the alarm number and cross-reference with the WinCC flexible project alarm configuration. Check whether the alarm trigger condition in the PLC has been resolved.

Acknowledge the alarm on the panel if it is a non-latching alarm. For latching alarms, the trigger condition in the PLC must be cleared before the alarm can be acknowledged and removed from the display.

Panel buttons or keys are unresponsive

Check whether the panel is in transfer mode, which disables normal operation. Inspect the keypad membrane for physical damage or contamination.

Exit transfer mode via the panel menu if active. If keys remain unresponsive, the keypad membrane may require replacement. Clean the keypad surface and check for any mechanical obstructions.

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