S5-115U CPU - OB31 Download Issue

Hello, I'm Siemens Self Support, integrated with SiePortal. You're encountering an issue downloading OB31 to your S5-115U 944 CPU, resulting in a "cannot transfer system block" error and preventing RUN mode. This typically indicates a hardware or configuration problem.

Here's a breakdown of potential causes and troubleshooting steps:

• Battery Check: A weak battery can corrupt system blocks. Replace the CPU battery first.
• Hardware Fault: The CPU itself might have a hardware issue.
• Program Compatibility: Ensure your program is compatible with the S5-115U CPU's firmware version.
• Protection Keys/Write Protection: Verify there are no active protection keys or write protection switches preventing modification of system blocks.
• OB31 Contents: Check if the OB31 code is valid and doesn't exceed the available memory.

Important Resources:

• SiePortal Support Article: S5-115U CPU - Cannot transfer system blocks (Example Link - check SiePortal for the most relevant article)
• SIMATIC S5 Manuals: Access the official S5 documentation through SiePortal for detailed information on system blocks.

If the battery replacement and basic checks don’t resolve the issue, consider contacting Siemens Technical Support via SiePortal Request Support for further assistance. Please have your CPU's serial number ready.

Compatibility Assessment: S5/IM308C and TSX P57 with Anybus AB7634

Based on the information provided, connecting a Siemens S5 PLC with an IM308C and a Schneider Electric TSX P57 4634M Modbus TCP/IP PLC using the Anybus AB7634 gateway is likely possible, but requires careful configuration.

The key is the Anybus AB7634's PROFIBUS slave functionality (DPV1, Class 1 & 2) and its Modbus TCP/IP server capabilities. The IM308C supports PROFIBUS DP, and the gateway will act as a bridge. The TSX P57 will communicate via Modbus TCP/IP to the Anybus gateway.

However, compatibility with the IM308C is not guaranteed as the IM308C is an older component. You should verify:

• The IM308C's PROFIBUS DP implementation fully supports the features used by the Anybus gateway.
• Sufficient data exchange speed for your application.

Review the Anybus AB7634 manual here for detailed configuration instructions and PROFIBUS compatibility notes. Also, consult the SiePortal knowledge base for specific S5/IM308C PROFIBUS configurations.

Recommendation: Conduct thorough testing in a non-production environment before deploying this solution.

Troubleshooting 6ES5 318-8MB12/MB13 Replacement & Potential ET200 Upgrade

Based on your detailed description, the intermittent bus faults and process image update errors when using the 6ES5 318-8MB13 suggest a compatibility or signal integrity issue within the Profibus network, specifically affecting the communication with output cards.

Here's a breakdown of potential causes and suggestions:

• Profibus Termination: Even though it's a middle drop, double-check the Profibus termination resistors. A slight impedance mismatch can cause issues, especially with newer modules being more sensitive.
• Cable Integrity: Inspect the Profibus cable run for any damage, kinks, or loose connections, especially near the MCC rack.
• Network Load: 13 drops is a significant number. High network traffic could exacerbate timing issues. Consider using a Profibus network analyzer to monitor the bus load and identify potential bottlenecks.
• Module Firmware: While less common, ensure the CPU and modules have the latest firmware compatible with the 6ES5 318-8MB13.
• Address Conflicts: Though you checked dip switches, re-verify that the module address doesn't conflict with any other device on the network.

Regarding ET200 Replacement:

The ET200M is generally a reliable choice, but it is a significant wiring change. Your concern about downtime is valid. The ET 200S is a more direct replacement for the ET200U in terms of wiring. It maintains the same terminal types and backplane compatibility.

Important Considerations:

• Compatibility: Verify the ET200S configuration and module compatibility with your S7-414-2 CPU.
• Documentation: Refer to the Siemens documentation for ET200S migration and configuration guidelines.
• SiePortal Resources: Utilize SiePortal for detailed product information, manuals, and FAQs.

Given the history of the original rack's resilience, the ET200S seems the most viable option to minimize rewiring and maintain reliability. However, thoroughly investigate the Profibus network before committing to a hardware upgrade.

Understanding S5 I and B Stacks for Troubleshooting

Hello James, welcome to Siemens Self Support! It sounds like you're facing an intermittent STOP issue with your S5 PLC controlling mixing machines. Interpreting the I (Input) and B (Bit) stacks is crucial for diagnosing such problems.

Key Resources for I/B Stack Analysis

Here's how to get started. These resources are available via SiePortal:

• Siemens Forum: S5 PLC I/B Stack Interpretation - A detailed discussion on reading and understanding I/B stacks.
• Siemens Forum: How to read the I/B Stack of an S5 PLC - Provides step-by-step guidance for stack analysis.
• STEP 5 Documentation: Refer to the STEP 5 help files (accessible within the STEP 5 programming software) for comprehensive explanations of I/B stack usage and error codes.

Troubleshooting Tips

Specifically, look for patterns in the I/B stack when the PLC goes into STOP. The I-stack will show which input triggered the current block, and the B-stack shows the current chain of blocks. Intermittent issues can be challenging, but consistent analysis during each STOP event will help pinpoint the source.

If you're still facing difficulties after reviewing these materials, please provide the specific error code displayed when the PLC stops. This will help me offer more targeted assistance.

Best regards,
Siemens Self Support

Driver w32_511 for PC/PLC Step 5 Communication

Dear Chema,

The w32_511 driver, enabling communication between a PC and a STEP 5 PLC using functions like db_read, dx_read, db_write, and dx_write, is typically found within the STEP 5 V7.x software package.

You can download the STEP 5 V7.x software, including the w32_511 driver, from the Siemens Industry Online Support. You will need a valid Siemens account and possibly a license or service agreement to access the download.

Alternatively, if you already have STEP 5 installed, check your installation directory for the driver files. Refer to the STEP 5 documentation for specific installation and usage instructions. STEP 5 Documentation

For further assistance, please consult the SiePortal knowledge base or contact Siemens support directly.

Sincerely,
Siemens Self Support

Regarding FB7 (P_RCV_RK) Usage for Fetching Requests

Dear Rusli,

Yes, you typically need to call FB7 twice when handling fetching requests with only the FB7 block (P_RCV_RK).

First Call: To receive the fetch request from the partner CPU.

Second Call: To provide the requested data back to the partner CPU.

This two-step process is fundamental to how FB7 operates within S5-S7 communication. For more detailed information, please refer to the SiePortal documentation on S7 communication and FB7 specifically:

S5-S7 PtP Communication (Original Thread)

Sincerely,
Siemens Self Support

S5 to S7 Conversion Errors - Next Steps

Thank you for reaching out to Siemens Self Support. Based on the image provided (though visibility is limited without the actual image content), conversion errors from S5 to S7 are common and often require detailed investigation.

Here's a recommended approach, leveraging SiePortal resources:

1. Review the Error Log: The conversion tool's error log will contain specific details about *why* the conversion is failing. Analyze these messages carefully.
2. Check Compatibility: Ensure all S5 instructions and features are supported in the target S7 system. Refer to the S5 to S7 Conversion Overview on SiePortal.
3. Address Data Types: Differences in data type handling are a frequent cause. Verify data type mappings in the conversion settings.
4. Complex Instructions: Some S5 instructions may require manual adaptation in S7.
5. SiePortal Knowledge Base: Search the Siemens Industry Support Portal (SiePortal) using keywords like "S5 to S7 conversion errors," or the specific error code from the log.
6. Consider Professional Services: For particularly complex conversions, Siemens Professional Services can provide expert assistance.

Please provide the *exact* error messages from the log for more specific guidance. Attaching the error log file directly would be ideal.

S5 Programming Software - Download Information

Hello Norm,

The S5 programming software (STEP 5) is an older product and is no longer officially available for download from Siemens directly. However, here's information regarding access:

Siemens Support

As a first step, please check this FAQ on Siemens Support for information on obtaining legacy software. You may need a valid maintenance agreement or special arrangement.

Third-Party Suppliers

You are correct that third-party suppliers may offer STEP 5. However, Siemens does not endorse or support software obtained from unofficial sources. Please exercise caution and ensure the supplier is reputable to avoid potential issues with licensing or software integrity.

Disclaimer: Using software from unverified sources can pose security risks. Siemens recommends exploring official support channels first.

For further assistance, please visit SiePortal or contact Siemens Industry Support directly.

Sincerely,
Siemens Self Support

Migrating Projects: IP246/IP281 to FM453/FM450

Hello, as Siemens Self Support, integrated with SiePortal, I can assist you with migrating your project.

Direct Function Block (FB) compatibility between IP246/IP281 and FM453/FM450 is limited. A direct migration is often not possible without adjustments.

Recommended Procedure:

1. Review Functionality: Analyze the functions used in your IP246/IP281 project.
2. FM45x Equivalents: Identify equivalent FBs or libraries in the FM453/FM450 library. Siemens provides documentation for FM453/450 here.
3. Manual Adaptation: Most likely, you'll need to adapt existing code. This may involve replacing FBs and adjusting data types.
4. Testing: Thoroughly test the migrated project in a simulated environment before deploying to the FM453/450.

For detailed guidance and specific FB recommendations, please use SiePortal's search function with keywords like "FM453 migration," "FM450 migration," and relevant FB names. You can also raise a support request through Siemens Support.

PLC Battery Replacement - Expert Guidance

Yes, the correct replacement battery for most Siemens SIMATIC S5 PLCs is typically an LS14250 3.6V Lithium battery. This is a common and reliable choice.

Important: Replacing the battery while the processor is in RUN mode is not recommended. While some users report success, it carries a significant risk of losing the PLC program and/or damaging the memory.

Best Practice: To avoid program loss, always follow these steps:

1. Download the Program: Before any battery work, always download the current PLC program to your programming device. This is your primary backup.
2. Put PLC in STOP Mode: Switch the PLC to STOP mode before removing the old battery and installing the new one.
3. Verify Battery Installation: Ensure correct polarity during installation.
4. Upload Program: After battery replacement, upload the program back to the PLC.

For detailed instructions and safety information, please refer to the Siemens Industry Support article:

You can also find further information within the SiePortal knowledge base by searching for "S5 PLC battery replacement".

Analog Output Card Replacement - 6ES5 470-8MB12 to 6ES5 470-8MC12

Dear Sulistiyo Heri,

Yes, you can generally replace the 6ES5 470-8MB12 with the 6ES5 470-8MC12. Both cards offer similar functionality for analog output.

However, there might be minor differences in hardware specifications (e.g., isolation voltage). Therefore, a review of the manuals is crucial. You can find the manuals on SiePortal:

• 6ES5 470-8MB12 Manual
• 6ES5 470-8MC12 Manual

Regarding programming and addressing: In most cases, the address remains the same. However, always verify this in your PLC program (STEP 5) and compare the parameter settings in both cards after the replacement. Check for any differences in scaling or offset settings.

For checking the lifetime/discontinuity of S5 PLC modules (including analog modules), please refer to this FAQ on Siemens Support. It details diagnostic tools and procedures.

Sincerely,

Siemens Self Support

Multiple Assignment of Memory Bits in TIA Portal

You've correctly identified a potential issue with multiple assignments of the same memory bit within a block. In TIA Portal (and generally in PLC programming), when multiple networks attempt to write to the same memory bit, the last network evaluated will determine the final state of that bit.

In your example:

• NW1: A M25.0 = M200.7
• NW2: A M25.1 = M200.7

M200.7 will reflect the state of M25.1. If M25.1 is "1", M200.7 will be "1". If M25.1 is "0", M200.7 will be "0". Network 1's assignment is overwritten by Network 2.

Important Considerations:

• Cyclic Evaluation: The order of network evaluation is determined by the program scan cycle.
• Potential Issues: This behavior can lead to unexpected results and difficult-to-debug issues if not carefully considered.
• Best Practice: Avoid multiple assignments to the same memory bit within a block. Use intermediate variables or functions to manage logic and prevent conflicts.

For more detailed information on data consistency and avoiding such issues, please refer to the Siemens documentation:

OP15A & CPU95 Communication - PG/SI1 Port

Hello!

Yes, you typically do need a standard Function Block (FB) for communication even when using the PG/SI1 port with a CPU95 and OP15A. The FB handles the data exchange protocol.

Specifically, you'll likely need to use FB260 (OP15A Communication) or a similar FB designed for operator panel communication on S5/S7-95 PLCs.

Given the age of the PLC, refer to the original documentation for both the CPU95 and OP15A. You can find relevant manuals and support articles on the Siemens Industry Online Support portal:

Siemens Industry Online Support

Search for "CPU95 OP15A communication" or "FB260" on SiePortal. This will provide details on configuration and FB usage.

Remember to configure the correct communication parameters (baud rate, parity, etc.) in both the PLC and the OP15A.

Step 5 PLC Upgrade - S5-110 (6ES5 900-7AB11)

Dear Vibha,

Upgrading a Step 5 system without a program backup and lacking communication ports presents challenges. Here's a breakdown of potential solutions and resources:

Regarding Program Retrieval:

Without a visible communication port, retrieving the program is difficult. Consider these options:

• Check for hidden ports: Some S5-110 CPUs have a serial port under a cover. Inspect the CPU carefully.
• Specialized Hardware: Explore using a specialized S5 data transfer module (e.g., from third-party vendors) to extract the program.
• Professional Services: Siemens offers Migration Services that can assist with program extraction and upgrade.

Regarding User Manual:

The S5-110 user manual is available on the SiePortal. Please use the following link:

You can also search for it on Siemens Industry Online Support using the article ID 10975807.

Upgrade Considerations:

Given the age of the system, a full migration to a modern PLC (S7-1200/1500) is highly recommended.

Disclaimer: Program extraction without a backup carries risks. Professional assistance is advised.

Sincerely,
Siemens Self Support

Troubleshooting Redundancy Startup After FB Error - S7-400/1500

It sounds like the 2nd CPU is failing to synchronize properly after the program reload and initial restart. Here's a breakdown of troubleshooting steps and answers to your questions:

Procedure to Start 2nd CPU in Redundancy State:

1. Synchronization Requirement: Ideally, both CPUs should be in STOP mode for initial synchronization after a program change or significant error. While it *might* work with the master running, it's unreliable and increases the risk of inconsistencies.
2. Overall Reset: You've already attempted this, which is good. Ensure the overall reset is performed correctly (holding the reset button for sufficient time - usually >5 seconds).
3. Check Redundancy Status: Use TIA Portal to explicitly check the redundancy status of both CPUs. Look for any error messages or inconsistencies reported by the redundancy mechanism.
4. Force Synchronization: In TIA Portal, there's often an option to "Force Synchronization" or "Synchronize Configuration." Try this after ensuring both CPUs are in STOP.
5. QVZ LED: The intermittent QVZ LED suggests possible communication issues or synchronization problems. Investigate network connectivity between the CPUs.

Can you start the 2nd CPU while the master is running?

While technically possible in some cases, it's strongly discouraged after a program error that caused both CPUs to stop. A clean synchronization with both in STOP is the recommended practice.

Further Support & Resources:

• SiePortal Entry: Redundancy Does Not Start After Program Change
• TIA Portal Documentation: Refer to the TIA Portal documentation on redundancy configuration and troubleshooting for detailed instructions.
• Siemens Support: If these steps don't resolve the issue, create a support request through Siemens Support, providing detailed error messages and configuration information.

OP Upgrade & S5 Communication - Recommendation

Dear Customer,

You are correct; the CP1413 card is limited by its driver support for Windows NT. Migrating to Windows XP with PCI slots necessitates a communication solution compatible with the new OS and interface.

CP 1613/1613-C is a suitable recommendation. It supports both PROFIBUS and MPI/PPI communication for your S5 PLC (Sinec H1) and has drivers available for Windows XP.

Further Considerations:

• Verify driver compatibility for your specific Wonderware version and Windows XP.
• Review the CP 1613/1613-C documentation on SiePortal for detailed specifications.

Since you're also migrating the S7 PLC, ensure the new S7 supports communication via the chosen CP card.

Sincerely,
Siemens Self Support

CP 528 & COMGRAPH - Text/Message Modification

Dear Customer,

Siemens Self Support understands you're looking for information on modifying text and messages within your COMGRAPH project for the CP 528 visualization of your chocolate machine.

Unfortunately, direct documentation for COMGRAPH programming specifically for the CP 528 is limited. However, the core principles remain consistent with other COMGRAPH applications.

Modifying Text in Pictures: Within a full graphic window, you've already identified the correct approach – directly edit the text within the object properties. Ensure you save the changes to the graphic object.

Changing Messages: Message modifications are typically handled within the COMGRAPH configuration. Look for the "Messages" or "Text Libraries" section in COMGRAPH. You can define and edit message IDs there, which are then referenced within your application logic.

Further Support Resources:

• SiePortal: https://support.industry.siemens.com/ (Search for "COMGRAPH programming" and "CP 528")
• COMGRAPH Documentation (General): While CP 528 specific manuals are scarce, the core COMGRAPH documentation will be helpful. Search SiePortal for COMGRAPH manuals.
• Siemens Industry Forum: https://support.industry.siemens.com/forum/ - Post your question in the relevant forum for assistance from other users.

If you continue to experience difficulties, please provide more details about the specific message you are trying to modify.

Sincerely,
Siemens Self Support

S5 to S7 FB Conversion - Function Descriptions

Hello! Converting S5 files to S7 often involves understanding specific function blocks (FBs) like FB1 (ADD:32) you've encountered.

Detailed descriptions of these standard FBs (and their S7 equivalents) can be found in the Siemens documentation. Here are some helpful resources:

• S7-300/400 System Manual: This manual provides details on standard FBs. Siemens Industry Online Support
• STEP 7 Help: Within the STEP 7 programming software, the online help contains detailed information on each FB. Access it by pressing F1 while highlighting the FB in your code.
• SiePortal: As a Siemens Self Support assistant integrated with SiePortal, you can find specific documentation through SiePortal's search function using keywords like "S7 FB library" or the FB number (e.g., "S7 FB1"). SiePortal

For ADD:32 specifically (likely an addition instruction), look for details on the ADD instruction within the S7 instruction set. It has likely been converted to a standard S7 ADD instruction.

AS511 Wiring & SINUMERIK 3 Issue

Hello, I understand you need a wiring diagram for connecting a 6ES5511-5AA12 AS511 card (25-pin) to a 15-pin PC-TTY interface, and you're facing issues with your SINUMERIK 3 after a power failure.

Wiring Diagram & Adapter Information

Unfortunately, a direct, readily available wiring diagram for a 25-pin AS511 to a 15-pin PC-TTY is difficult to locate. The original Siemens adapter (likely a specific RS232 cable with appropriate pin assignments) is crucial.

I recommend searching the Siemens Industry Forum: Siemens Industry Forum. Specifically, look for posts related to "AS511", "6ES5511-5AA12", "SINUMERIK 3", and "PC-TTY interface". Users may have shared information on custom cable builds or adapter details.

SINUMERIK 3 Startup Issue

The fact that your machine doesn't start automatically after reloading data, and the PLC modifications weren't saved to the EPROM, is significant. You'll need to re-enter or restore those PLC program modifications. Accessing the S5 program is key, which is why the adapter is critical.

Once you have connectivity via the adapter, you can use a Siemens programming software (STEP 5) to download/upload the PLC program.

SiePortal Resources

Please also utilize SiePortal for additional documentation and support: SiePortal. Search for your specific SINUMERIK 3 model and AS511 card.

If you can provide the exact SINUMERIK 3 model number, I can attempt to locate more specific documentation.

QVZ LED Indication - 155H CPU

The QVZ LED on the Siemens 155H CPU indicates a Zero Voltage Detection fault. This typically means the CPU is not receiving sufficient or stable 24V DC power.

Possible Causes:

• Insufficient 24V DC supply voltage.
• Poor connections in the 24V DC power supply circuit.
• Faulty 24V DC power supply.
• Internal CPU power supply issue (less common).

Troubleshooting Steps:

1. Verify the 24V DC power supply output voltage under load.
2. Check all wiring connections for tightness and corrosion.
3. If possible, test with a known good 24V DC power supply.
4. Consult the 155H CPU hardware configuration list to determine the proper power supply specifications.

For more detailed information, please refer to the following resources on SiePortal: