Send your machine's sequence — get the PLC program free

1. STEP 01
   You describe the sequence
   The PLC and software version, every input and output, then the steps in order: what the machine does, what it waits for, how long that may take, and what happens if it takes longer.
2. STEP 02
   We write it and test it
   An engineer reads it, asks if anything is unclear, writes the program and runs it in the simulator against your sequence — a normal cycle, a sensor that never arrives, a stop mid-cycle.
3. STEP 03
   You get it in 3 days
   By email: the project file for your software and version, the I/O, sequence and alarm lists, download and test notes — and the EPLAN or AutoCAD Electrical schematic if you asked for it.

• PLC model and software version. The instruction set and memory differ between models, and a project saved in a newer version often will not open in an older one.
• Every input and output. The address if you know it, what is connected, PNP or NPN, normally open or closed, single or double solenoid. This becomes the I/O map and, if you want it, the schematic.
• The steps, in order. What the machine does, then what it waits for. One row per step is enough; a paragraph in your own words works too.
• A maximum time for every wait, and what happens after it. Alarm and stop, alarm and go home, or retry. A program that waits for ever on a sensor that has failed is the commonest machine hang there is.
• Start conditions and home position. What must be true before a cycle starts, and where the machine goes at power-up or after a fault.
• Modes. Auto, one cycle per start, manual buttons for each output, or step-by-step for setting up.
• Safety devices. Emergency stop, safety relay, guard switches, light curtain, two-hand start, low air pressure — so the program reads them and stops correctly.
• Extras. An alarm list with causes, OK/NG counters, recipes for part variants, operator settings with limits, HMI screens, data logging.
• Schematic. EPLAN Electric P8, AutoCAD Electrical, or none.

• The PLC project — in your software's own format and version: a CODESYS .project, a Delta WPLSoft or ISPSoft project, a TIA Portal archive, or a Sysmac Studio or CX-Programmer project.
• A PDF printout of the program, to read and check before anything is downloaded.
• The I/O list, with every address, name and device.
• The sequence chart: each step, what it switches, what it waits for and its maximum time.
• The alarm list, with the cause and what to check for each one.
• Download and test notes: how to load it, settings to check, and the order to test it in.
• The electrical schematic, if you asked for it — EPLAN Electric P8 (project backup and PDF) or AutoCAD Electrical (DWG and PDF).

It all comes by email to the address on the form, within 3 days. Anything too large to attach comes as a download link. Questions while you commission it go to free PLC support.

One machine's sequence program on a CODESYS, Delta, Siemens or Omron controller, written from what you send, and the electrical schematic if you ask for it. Free, delivered in 3 days, with no obligation.

HMI screens, commissioning on site, fail-safe (safety PLC) programs, multi-axis motion and lines where several machines work together are quoted separately. If what you send needs one of those, we say so and give a fixed price before starting — never after.

The free program covers the first four. Everything here is open for paid work — new machines, changes, migrations and HMI screens — at a fixed price agreed before starting.

• Complete programs for new special purpose machines, test rigs and cells.
• Changes to a running machine: a new station, sensor, test, recipe or interlock.
• Troubleshooting a machine that stops, hangs mid-cycle or rejects good parts.
• Migration from an obsolete PLC or HMI to a current one.
• New HMI screens for an old machine: alarms with causes, manual pages, counters.
• Connecting machines to data: counts, cycle times and results for OEE dashboards and traceability in a SQL database.

A machine program is read far more often than it is written — by the maintenance engineer at two in the morning. These rules are what make that possible, and the free program follows every one of them:

• One I/O map. Every physical input and output is assigned in one place. Moving a wire to a spare terminal is a one-line change, not a search through the whole program.
• One owner per output. Each actuator is driven from one place in each scan — the automatic sequence or the manual page, never both.
• Every wait has a timeout. A cylinder that does not reach its sensor raises a named alarm that says which cylinder and what to check.
• Buttons are requests. An HMI button asks; the logic decides. A manual move that would crash the fixture is refused, not executed.
• Settings with limits. Every parameter has a default and an allowed range, and survives a power cut.
• Tested before site. The logic runs against a simulated machine with scripted scenarios — normal cycles, a stuck cylinder, an emergency stop mid-cycle — before it ever drives a real valve.

Drawings an electrician can wire from and a maintenance team can fault-find from, in EPLAN Electric P8 or AutoCAD Electrical. The schematic that comes with a free program is drawn from your I/O list; a full panel design goes further:

• Single-line diagrams, control schematics, block and interconnection diagrams.
• Wiring diagrams, cable schedules and terminal and junction box schedules.
• Panel layouts, component selection and bills of material.
• Earthing and protection, to IEC and IS practice.