Blog Archive: October 2026
27 articles published in October 2026.
Everything Voltrus published in October 2026: "From MES Data to Digital Twin: Simulating What-If Scenarios Before They Cost Money", "Bottleneck Analysis in Production Lines: Find and Fix the Constraint", "5S in the Digital Factory: How Scoring Workplace Organization Improves Flow". Practical guides and comparisons for engineers working with industrial automation tools, from protocol explorers to SCADA and HMI.
From MES Data to Digital Twin: Simulating What-If Scenarios Before They Cost Money
A digital twin is only as honest as its data: how MES records feed the model, how to calibrate and validate to ±5%, and four what-if scenarios to run before signing a purchase order.
Read articleBottleneck Analysis in Production Lines: Find and Fix the Constraint
Why one station sets your throughput and every other improvement is inventory. Finding the constraint from data, Goldratt’s five focusing steps on real numbers, and what to do when the bottleneck moves.
Read article5S in the Digital Factory: How Scoring Workplace Organization Improves Flow
A 25-point 5S scoring rubric you can copy, the search-time math that ties scores to station capacity, and why programs die at Standardize and Sustain, plus a simulator to practice the audit loop.
Read articleModbus to MQTT Gateway: Bridging PLC Data to a Broker
Why bridge Modbus TCP registers to an MQTT broker, how to design topics and QoS, and a working pattern using one gateway binary that speaks both protocols over one API.
Read articleLine Balancing with Takt Time: Find the Operator Count Your Line Actually Needs
The takt time formula, a worked four-station balancing example, theoretical minimum stations, the operator sweep that sizes the crew, and why simulation beats paper averages.
Read articleEastron SDM630 Modbus Register Map and Simulator
Complete Eastron SDM630 Modbus register map: input register addresses for voltage, current, power, power factor, frequency and kWh, float encoding, and an SDM630 simulator for macOS.
Read articleSiemens SENTRON PAC3200 Modbus Register Map and Simulator
SENTRON PAC3200 Modbus TCP register map from the official Siemens manual: offsets for voltage, current, power, THD, frequency and energy counters, plus a macOS simulator workflow.
Read articleSchneider iEM3000 Series Modbus Register Map and Simulator
Complete Modbus register map for Schneider Acti9 iEM3000 energy meters: current, voltage, power, power factor, frequency and 64-bit energy registers, with a macOS simulator workflow.
Read articleStudio 5000 on Mac: What Rockwell Software Runs on macOS and What to Use Instead
Studio 5000 Logix Designer, RSLinx Classic, and Connected Components Workbench are Windows-only. What runs on a Mac per Rockwell docs, the workarounds, and native Allen-Bradley tag access over EtherNet/IP.
Read articleBACnet Who-Is Troubleshooting: Why Device Discovery Finds Nothing
How Who-Is/I-Am discovery works, then a checklist for the usual failures: different VLAN, blocked UDP 47808, Wi-Fi client isolation, narrowed device-instance ranges, and BBMD foreign-device registration. Runnable natively on a Mac.
Read articleNATS Server Monitoring on macOS: Endpoints, CLI Tools, and a GUI
Monitor a NATS server from a Mac: the /varz, /connz, /routez, /jsz and /healthz monitoring endpoints, connections vs total_connections, slow consumers, curl plus jq, nats-top, nats server check, and $SYS in a native GUI.
Read articleThe 7 Wastes of Lean Manufacturing (With Examples You Can Simulate)
The 7 wastes explained with floor examples and cost math you can reproduce: why overproduction pays for the others, how Little’s Law turns WIP into feedback time, and an afternoon waste-scan checklist.
Read articleFactory Layout Software: Simulate the Line Before You Move a Single Machine
What factory layout software should actually do: model the plant in 3D, run a deterministic production flow simulation, and forecast per-chain throughput and bottleneck location before a single machine is moved.
Read articleTeaching Lean Manufacturing with a 5S Factory Simulator
A lean manufacturing simulator makes 5S auditable on a virtual floor: live 5S scoring with a worker-speed bonus, muda tracking that prices the 7 wastes as they happen, and deterministic runs that make cohorts comparable.
Read articleConveyor vs AGV: Choosing Material Transport with a Discrete-Event Factory Sim
Conveyor systems design vs AGV fleets vs manual transport: the trade-offs that decide it, and how AGV simulation in a deterministic discrete-event sim puts the investment comparison side by side before you spend anything.
Read articleModbus TCP Unit ID Explained: Gateway Routing, 255, and the Slave ID Confusion
The unit ID is one ignored byte until a gateway turns it into a serial slave address. How MBAP routing works, what 0, 1-247 and 255 mean, and how to debug the timeouts a wrong unit ID produces.
Read articleHow Fast Should You Poll Modbus? Scan Rate, Device Limits, and Network Load
Modbus polling rate explained: matching the interval to how fast values change, batching reads (125 registers per FC03 request), device connection limits, RTU bus timing, and practical defaults per point type.
Read articleHow to Log Modbus Data: Traffic Capture, CSV Export, and Trending
Capture Modbus register values, request/response traffic, and exceptions; export timestamped CSVs for vendor tickets and commissioning baselines; watch live trends beside the register table.
Read articleMES Implementation Checklist: The First 30 Days on One Line
A practical MES implementation plan: one line, six data objects, paper in parallel on purpose, machine data only where it exists, and the four go/no-go questions for day 30.
Read articleBarcode Scanning on the Shop Floor: What to Label and What to Scan
Keyboard-wedge barcode scanning is the cheapest adoption lever a MES has. What to label (materials, lots, machines, travelers), which scanner to buy, and the four rules that keep scans trusted.
Read articleDigital Work Instructions: Put the SOP Where the Operator Works
Paper SOPs fail at the machine, mid-shift, after a changeover. What digital work instructions change, how to attach them to the routing operation, and why migration-by-demand beats the documentation sprint.
Read articleMachine Monitoring Without Buying New Sensors
Start with operator-reported counts, mine existing PLC and CNC data paths, retrofit sensors only where the gap costs money. An escalation path from manual to automatic machine monitoring.
Read articleChangeover Tracking: Measure SMED Before You Run It
Changeover is the easiest loss to improve and the hardest to see in a shift report. What counts as changeover time, how the run record captures it, and how the matrix turns SMED workshops into measured wins.
Read articleIs There a Modbus Poll for Linux? Alternatives and Where Voltrus Fits
Voltrus Modbus Poll runs on macOS and iOS only. If you need a Modbus master or slave simulator on Linux, here are the tools people use instead.
Read articleMQTT Explorer vs MQTTX on macOS: Native vs Electron
MQTTX is the best free cross-platform MQTT client. MacTools MQTT Explorer is native macOS: a fraction of the RAM, native topic tree rendering, and a built-in broker for local testing. $24 one-time.
Read articleModbus TCP Connection Refused: 7 Causes and How to Fix Them
Connection refused on Modbus TCP port 502? Seven real causes in order of frequency (closed port, firewall reject/drop, connection limits, NAT traps), plus a bisection method that finds the fault in minutes.
Read articleFactory Layout Simulation: Why Your Production Line Design Is Costing You Throughput
Distance is a per-unit tax most plants never price. Worked four-station rebuild: how 32 seconds of transport and 3 seconds of balance turned 267 units per shift into 391, and how to test a redesign before moving a machine.
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