
Open
Posted
•
Ends in 6 hours
Paid on delivery
Title: Fatek PLC Slub Yarn Pattern Fix — LFSR Randomization (WinProladder, urgent) Description: We have a thick-and-thin yarn machine controlled by a Fatek FBs-series PLC (WinProladder). It has a FBs-2DA analog output module that sends 0–10V speed commands to two VEICHI VFDs (DRAFT/1 and DRAFT/2) via registers D3840 and D3841 (0–4095 = 0–10V). The problem: The current program uses a fixed step table that repeats every ~1.5m, causing a diamond pattern in woven fabric. The spec requires no repeat within 1000m. What we need implemented — exact spec: Two independent 16-bit LFSRs in ladder logic: LFSR-1 for Roving 1: state in D100, mask K46080 LFSR-2 for Roving 2: state in D110, mask K53256 Period = 65,535 — never repeats within 1000m No step table — direct LFSR scaling only: thin_length = (LFSR_state MOD K86) + K15 → range 15–100mm. Convert mm to scan-cycle count; store in D123 (Ch1) and D124 (Ch2). RTC seeding at startup (M1902): seed D100 from D1018+D1019+D1020 (Fatek built-in clock). D110 = D100 + K1000. Never allow zero state. Anti-repeat: if new value equals last output, add K3 and clamp to range. Fixed slub length = 35mm via scan-cycle counter (K48 cycles at 10ms scan). Slub speed = DAC K3500. Thin speed = DAC K2048. Speed ramp: each scan cycle, step D3840/D3841 toward target by K50 counts. Clamp 0–4095. State machine: D126 flag (0 = thin, 1 = slub). Increment counters, switch state when target reached, call LFSR on each switch. DRAFT/1 VFD fix: set P0.03 = 2 (analog AI1) and P0.01 = 1 (external terminal). Currently showing "not" error — no analog command is reaching it. Deliverables: WinProladder project file with commented ladder logic + brief test procedure. Full technical documentation with register map, hardware photos, and pseudocode is provided immediately on hiring. This is implementation only — design is complete. Skills required: Fatek FBs PLC, WinProladder, VFD analog control, ladder logic (AND/XOR/SHR/DIV/MOD)
Project ID: 40474397
5 proposals
Open for bidding
Remote project
Active 2 days ago
Set your budget and timeframe
Get paid for your work
Outline your proposal
It's free to sign up and bid on jobs
5 freelancers are bidding on average ₹21,500 INR for this job

As an Industrial Automation expert with years of experience working on complex systems and PLC programming, I am confident I can provide a tailor-made solution for your yarn machine problem. My expertise includes Fatek FBs-series PLC, WinProladder—programming languages that I've used extensively to develop efficient ladder logic solutions to similar problems. Given your detailed project description, I have a precise understanding of your needs and can get to work immediately producing a WinProladder project file with the ladder logic you specified. In previous projects, I have used my skills in ladder logic (AND/XOR/SHR/DIV/MOD) and VFD analog controls to create effective systems. For instance, in one wastewater treatment plant project, I designed a software system using SIEMENS TIA portal that effectively monitored and controlled various variables in an automated process. This project and others tasking me with designing robust systems using PLCs have honed my skills in writing efficient ladder logic tailored to meet specific objectives — skills crucial in this project. Besides the technical expertise, my commitment to quality is unmatched. I approach each task, including this one, meticulously; triple-checking my work to ensure it aligns with the given
₹25,000 INR in 7 days
5.1
5.1

Hi, I am an Industrial Automation Architect. Your system design and mathematical modeling are perfectly clear. Implementing a 16-bit LFSR in ladder logic requires precise manipulation of shift registers and XOR masks, and I am ready to translate your exact pseudocode into a clean WinProladder project. Here is my execution strategy based on your precise specs: 1. LFSR & Math Implementation: I will construct the two independent LFSRs using WinProladder's bit-shift (SHR) and logic (XOR) function blocks, applying your exact polynomial masks (K46080 for D100 and K53256 for D110). The RTC seeding (M1902) will be implemented with zero-state protection. The scaling (LFSR_state MOD K86) + K15 will be handled using Fatek's Math/DIV function blocks. 2. State Machine & Analog Ramp: I will build the state machine around the D126 flag (0=thin, 1=slub). The 10ms scan-cycle counter will strictly dictate the fixed 35mm slub length. For the FBs-2DA module, I will implement a K50 increment/decrement ramp logic per scan cycle to smoothly drive D3840/D3841 between K2048 and K3500 without exceeding the 0-4095 (0-10V) DAC limit. 3. VEICHI VFD Fix: I acknowledge the VFD parameter overrides (P0.03 = 2 for AI1, and P0.01 = 1 for external terminal). The DAC output will seamlessly drive this once the ramp logic is active. I can start immediately. Send me the technical documentation and the pseudocode, and I will deliver the commented .pdw WinProladder file and test procedure within 48-72hours.
₹30,000 INR in 3 days
0.8
0.8

Hi there, I can resolve the repeating diamond pattern in your woven fabric by completely replacing the existing step table with the dynamically seeded, maximal-length 16-bit LFSRs you have specified. But because you guys already have a complete, well-defined mathematical design, my focus will be entirely on rapid, bug-free ladder logic implementation in WinProladder and resolving the analog communication fault with the DRAFT/1 VFD. My Implementation Strategy will be: LFSR & Bitwise Ladder Logic: I will construct the shift-and-XOR logic required for the two independent LFSRs using your exact masks (K46080 for D100 and K53256 for D110). This ensures the full 65,535 period to meet your 1000m no-repeat requirement. I will handle the RTC seeding (M1902) from the Fatek built-in clock (D1018-D1020), ensuring zero-state lockups are mathematically impossible. Scaling & Anti-Repeat Math: I will translate your (LFSR_state MOD K86) + K15 scaling equation into Fatek DIV/MOD instructions to generate the 15–100mm scan-cycle counts (D123/D124). I will also implement the comparator logic to add K3 and clamp the output if a repeated state is detected. State Machine & DAC Ramping: I will build the D126 (0/1) state machine governed by the 10ms scan counters. Crucially, I will implement the K50 increment/decrement slew rate for the FBs-2DA module (registers D3840/D3841). This prevents abrupt 0–4095 (0–10V) steps that could trip the VEICHI VFDs.
₹15,000 INR in 10 days
0.0
0.0

Hey I recently helped a creator edit a product launch video that drove 200+ sales in 72 hours. I can help you produce clean, professional videos that hold attention and drive action. Your post mentioned needing fast turnaround and captions that match your brand voice. I edit daily in Adobe Premiere Pro and handle social formats, motion graphics, and revisions. We have 75+ 5 star reviews on similar projects and rank in the top 1% among 75 million users. I am confident in delivering exceptional results for your urgent Fatek PLC Slub Yarn Pattern Fix project. With expertise in Fatek FBs PLC, WinProladder, VFD analog control, and ladder logic, I will implement two independent 16-bit LFSRs to ensure no repeat within 1000m and achieve the exact specifications outlined. Expect a WinProladder project file with commented ladder logic and a comprehensive technical documentation package upon hiring me. Let's elevate your yarn machine control system to meet the highest standards.
₹22,500 INR in 7 days
0.0
0.0

As an Automation Engineer with extensive experience in industrial automation and specifically, with Fatek FBs-Series PLC, your project aligns perfectly with my expertise. I have a deep understanding of WinProladder, can seamlessly navigate across VFD analog control, and have substantially worked with ladder logic (AND/XOR/SHR/DIV/MOD) as your project's crux. My proficiency extends beyond just using these tools; I have also integrated PLCs with multiple systems, such as Python and Node-RED, much like the requirements mentioned in your project for real-time monitoring, data logging, and cloud-based control. Thus, providing you with more than just a functional design or solution. Lastly, one of my biggest strengths as an Automaton Engineer is creating detailed documentation to accompany my projects. The clarity and reliability of my project files and documents will significantly reduce future troubleshooting needs. My goal has always been to automate processes efficiently while still ensuring a practical understanding for the clients. Your project is unique and challenging, and I am confident in my ability to provide not only an appropriate solution but also heightened levels of convenience, efficiency, and performance.
₹15,000 INR in 7 days
0.0
0.0

Karnāl, India
Member since May 28, 2026
₹1500-12500 INR
$250-750 USD
£20-250 GBP
₹12500-37500 INR
$30-250 AUD
₹1500-12500 INR
$8-15 USD / hour
€30-250 EUR
£18-36 GBP / hour
₹600-1500 INR
₹1500-12500 INR
£10-15 GBP / hour
$750-1500 USD
$3000-5000 AUD
$250-750 USD
₹12500-37500 INR
$10-30 USD
$25-50 USD / hour
£250-750 GBP
£20-250 GBP