Unfortunately, I cannot share the file here due to its size, but I can provide some screenshots. If you are knowledgeable about structured text, please feel free to offer any advice to help me understand how it works. While ladder logic is more straightforward, I believe that once the structure of the text becomes clearer, it will also make sense. The screenshot starts from the top under Programs > General, where I am able to understand concepts like IF, Then, Else, etc. It is akin to programming Siemens Logo with Function Blocks, except that it involves text. However, grasping how everything fits together and makes sense is currently a challenge.
- 30-12-2024
- Bering C Sparky
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- 31-12-2024
- Bering C Sparky
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- 31-12-2024
- Bering C Sparky
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- 31-12-2024
- Bering C Sparky
The program appears to be well-documented with comments in green text, which is a valuable asset. When working with structured text, it is essential to prioritize the desired output. It is common for beginners to overuse conditional statements such as "if," "then," and "else."
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- 01-01-2025
- Bering C Sparky
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- 01-01-2025
- Bering C Sparky
7th in line
- 01-01-2025
- Bering C Sparky
While none of the ST may seem challenging, simply cross-referencing the end points is necessary. However, it seems that many are simply replicating manual commands and resets at a more overarching level for ease of use. To gain a better understanding of the IO structures and more, try expanding on configurations and setup. This will help you grasp a clearer picture of the overall system.
Chelton noted that the program appears to be well-commented with green text, which is beneficial for readability and understanding. When working with structured text, it's important to consider the desired "output" first. It's evident that the Output Mapping section consists of all green text. As a newcomer, it's common to rely heavily on conditions like "If," "then," and "else." Is there a specific reason for different colored texts? Are blue texts instructions and red texts related to input/output mapping? Or is red reserved for mapped I/O only? Additionally, physical inputs are identified in black within the Input Mapping section. Do these colors remain static or do they change based on the programming context? As I navigate through the program, I may have more questions, so I appreciate any insights from experienced individuals. Thank you for your patience and guidance.
- 01-01-2025
- Bering C Sparky
Below is the completion of the output mapping. What is the importance of the final rung in the sequence? Does c15_l1:=);*)Dummy := Dummy hold any significance, or is it a humorous variation of "END"?
- 01-01-2025
- Bering C Sparky
Mapping outputs to enhance productivity and efficiency
- 01-01-2025
- Bering C Sparky
For an effective ST routine, it is essential to include at least one line of code. This practice is similar to the documentation process, which is crucial for tracking changes and revisions.
Bering_C_Sparky mentioned being a beginner in ST programming and expressed appreciation for learning that comments are in green text. They are curious about the significance of different colored text in Output Mapping and wonder if specific colors indicate different types of information. For example, is blue text for instructions and red text for I/O and Mapped I/O? They also noticed that physical inputs are represented in black in Input Mapping and wonder if the colors are static or change based on programming activities. They plan to ask questions in a shotgun style fashion to ensure clarity and welcome input from others in the field. The overall post appears to be a work in progress, with potential for more informative content.
Lostcontrol mentioned that the ST configurations may not seem challenging initially, as long as you cross-reference the endpoints. However, it appears that many are simply replicating manual commands and resets on a broader scale for ease of use. To gain a deeper understanding of the IO structures and more, try broadening your configurations and setup. By doing so, you can enhance your knowledge and grasp a clearer idea of the setup. Click to expand for more details.
- 01-01-2025
- Bering C Sparky
Bering_C_Sparky mentioned that they are unable to share the file due to its size here, but they can provide some screenshots for reference. They are seeking advice from those familiar with structured text to help them understand how it works better. While ladder logic is easier to grasp, structured text may become clearer with time. The screenshots start from the top under Programs > General, focusing on IF, Then, Else statements. This approach is akin to programming Seimens Logo using FB but with text. Understanding the integration of all elements in structured text poses a current challenge. The EC_Reset function, like a timer, automatically resets the etherCAT network. These types of functions may be less intuitive in ST compared to other text-based languages such as ladder logic.
lostcontrol suggested that the content appears incomplete or altered from its original intent. While it may include informative notes, its placement raises doubts. Is the green text consistently for comments, or can it also have a functional role in the programming?
- 01-01-2025
- Bering C Sparky
When it comes to programming, is green text always designated as comments, or are there instances where green text plays a role in the program's functionality? This flexibility allows for customization of colors and more in your coding examples.
One user, Bering_C_Sparky, provided an expanded configuration that revealed a larger network. By clicking to expand the IO_Map, users can identify a structure with tag/variable assignments. This crucial information could act as the key piece of evidence needed to connect all the dots. Discover more details by expanding the configuration.
lostcontrol mentioned that the EC_Reset is an inherent function in etherCAT, acting like a timer. It automatically resets the etherCAT network. These types of functions may be less intuitive in ST compared to other text-based languages like ladder logic. Feel free to let me know if there is something specific you would like to explore further.
- 01-01-2025
- Bering C Sparky
lostcontrol mentioned the impressive size of the network. If you navigate to IO_Map and expand it, you will notice a similar structure with the tag/variable assignments. This could potentially be the crucial evidence needed to connect all the pieces together. Let me take a closer look and I'll get back to you shortly.
- 01-01-2025
- Bering C Sparky
Interactive Map platform
- 01-01-2025
- Bering C Sparky
When utilizing Bering_C_Sparky's IO_Map feature, expanding each node or device will reveal the IO data specific to that device, akin to the functionality of AOP in Logix for Ethernet device creation. This feature allows users to assign global variables to IO objects/attributes for program use, although this step is typically already completed for the majority of IO configurations. Explore the IO_Map feature for streamlined access to data for individual devices within your network.
Do you know what type of bugs we're dealing with? Once we have the source code, we can address them effectively. Are you looking for a HMI/SCADA system or something similar?
If you are searching for EtherCAT devices, chances are you also have Ethernet/IP devices in your network. To access your Ethernet/IP Connection settings, go to Tools and navigate to Ethernet/IP Connection settings to view your Ethernet adapters. It is important to note that EtherCAT and Ethernet are not the same, despite their similar cables and media appearance. They operate on isolated networks, where EtherCAT does not utilize IP addresses. This means that traditional diagnostic methods, such as pinging a device from a PC on the network, are not possible with EtherCAT.
You were correct in saying that this information helped me grasp the structure more clearly. In EtherCat systems, N[2] refers to Node 2, which represents an EtherCat Coupler on a RIO rack. U[12], on the other hand, indicates an output module located in slot 12 within that RIO rack. Furthermore, o[0] specifies output 0 on the 8-point output module. Understanding these designations can greatly aid in configuring and troubleshooting EtherCat systems.
- 01-01-2025
- Bering C Sparky
Chelton explained that if you have discovered EtherCAT devices, you likely also have Ethernet/IP devices. To access Ethernet/IP Connection settings, go to tools and navigate to the Ethernet/IP Connection settings. From there, you can view the Ethernet adapters and target devices/tag sets. It's important to note that although EtherCAT and Ethernet may look similar in terms of cables and media, they function as separate networks. Unlike EtherCAT, Ethernet uses IP addresses, so you won't be able to use common diagnostics like pinging a PC when connected to the network. Thank you for the information, I will delve deeper into this topic.
- 01-01-2025
- Bering C Sparky
lostcontrol inquired about the bugs and suggested working through them once the source code is obtained. Is there a HMI/SCADA system in place? There is a 12-inch HMI on the upper level of the elevator and two more along the conveyor lines near the palletizer/wrapper. I will make an effort to send you the file tomorrow.
The elevator is experiencing issues in auto mode, requiring a reset to move it once before getting stuck at a certain floor. Its intended function is to move to the upper deck when not in use, but it is doing the opposite. It is critical to address this issue promptly.
While I have not looked into it extensively yet, I will dedicate tomorrow to troubleshooting the elevator. I anticipate having several questions as I delve into it online. Thank you for your help, and we will touch base tomorrow. Have a good night and talk to you soon.
- 01-01-2025
- Bering C Sparky
After reading Bering_C_Sparky's comment, it became clearer to me how the structure works. In this scenario, Node 2 refers to the EtherCat Coupler located on a RIO rack, while U12 represents an output module in slot 12 within that same RIO rack. Output 0 on the 8 point output module would be denoted as o[0]. Although this analogy is helpful, it is not visible in the screenshot provided. It seems like there may be some mapping or unions happening behind the scenes since attributes cannot be utilized in the IO map. By expanding each IO module, the assignments should become more apparent.
I found the code I needed to reference earlier, and I also successfully arranged for IT to grant access to our email server. I have sent you the program file via email this morning. Thank you.
- 01-01-2025
- Bering C Sparky
Bering_C_Sparky mentioned that they found the code they needed and made changes to the email server permissions to send the program file. They are now focusing on setting the .Auto attribute and troubleshooting any pulsing issues. Based on the information provided, it seems that the root cause is not related to the software.
In response to Bering_C_Sparky's inquiry, I have found the code needed for the scenario mentioned above. Additionally, I have successfully obtained permission from IT to adjust our email server settings and have sent you the program file this morning. Thank you for your assistance.
The code functions as follows: If the load elevator is operational and set to auto mode, the pilot lights will remain steady. If the load elevator is operational but not in auto mode, the pilot lights will flash at a 1-second interval. When the load elevator is not in operation, the pilot lights will be off.
Within the PLC program, the P_On bit is constantly true during operation, with the corresponding P_Off bit. The Get1sClk function generates a pulsing bit that alternates every second.
Today, the vendor's programmer reappeared on the grid and successfully resolved the bugs while remoting in. Unfortunately, we were unable to conduct thorough testing as we were busy backloading supplies onto the ship, resulting in pallets of materials piling up on the conveyors. Despite needing to familiarize myself with the Omron platform and ST, I can now do so without feeling rushed. I appreciate the valuable input, and as things begin to quiet down, I will delve deeper into the project and will likely have more questions along the way.
- 01-01-2025
- Bering C Sparky