plc
PLC programming reference — ladder logic, structured text, function blocks, and IEC 61131-3 standards. Use when writing PLC programs, debugging rungs, or reviewing automation logic.
ソース情報
- リポジトリ
- bytesagain/ai-skills
- ソースの最終更新活動
- 2026年3月22日 02:44
- 検出された SKILL.md の言語
- 英語
- スター
- 16
- フォーク
- 2
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SKILL.md
ソースの指示 · 読み取り専用プレビュー- name
- plc
- version
- 1.0.0
- description
- PLC programming reference — ladder logic, structured text, function blocks, and IEC 61131-3 standards. Use when writing PLC programs, debugging rungs, or reviewing automation logic.
- author
- BytesAgain
- homepage
- https://bytesagain.com
- source
- https://github.com/bytesagain/ai-skills
- tags
- ["plc","industrial","automation","ladder-logic","iec-61131","structured-text"]
- category
- industrial
# PLC — Programmable Logic Controller Reference
Quick-reference skill for PLC programming concepts, IEC 61131-3 languages, common instruction sets, and troubleshooting patterns.
## When to Use
- Writing or reviewing ladder logic programs
- Debugging PLC faults and I/O issues
- Choosing between Structured Text, Function Block, or Ladder
- Looking up IEC 61131-3 data types and timer/counter instructions
- Setting up communication protocols (Modbus, EtherNet/IP, Profinet)
## Commands
### `intro`
```bash
scripts/script.sh intro
```
Overview of PLC architecture — CPU, I/O modules, scan cycle, memory areas.
### `languages`
```bash
scripts/script.sh languages
```
IEC 61131-3 programming languages: Ladder Diagram (LD), Structured Text (ST), Function Block Diagram (FBD), Instruction List (IL), Sequential Function Chart (SFC).
### `instructions`
```bash
scripts/script.sh instructions
```
Common PLC instructions — contacts, coils, timers (TON/TOF/TP), counters (CTU/CTD), math, comparison, move.
### `datatypes`
```bash
scripts/script.sh datatypes
```
IEC 61131-3 data types: BOOL, INT, DINT, REAL, STRING, TIME, arrays, structs.
### `faults`
```bash
scripts/script.sh faults
```
Common PLC fault codes and troubleshooting steps — CPU faults, I/O faults, communication errors.
### `protocols`
```bash
scripts/script.sh protocols
```
Industrial communication protocols — Modbus RTU/TCP, EtherNet/IP, Profinet, DeviceNet, OPC UA.
### `examples`
```bash
scripts/script.sh examples
```
Example programs: motor start/stop, traffic light sequence, tank level control, conveyor interlock.
### `checklist`
```bash
scripts/script.sh checklist
```
Pre-commissioning checklist — wiring, grounding, I/O mapping, safety circuit verification.
### `help`
```bash
scripts/script.sh help
```
### `version`
```bash
scripts/script.sh version
```
## Configuration
| Variable | Description |
|----------|-------------|
| `PLC_DIR` | Data directory (default: ~/.plc/) |
---
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