About r/PLC
This sub is dedicated to discussion and questions about Programmable Logic Controllers (PLCs): "an industrial digital computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis."
The community at a glance
r/PLC is a Subreddit for Hardware and Robotics Enthusiasts with roughly 140K members. It uses a forum format for communication. On the Hive Index it ranks #10 in the Robotics communities list. It is the 9th largest community in the Hardware topic page.
Roughly 25K members have joined in the past year. Popular discussion topics include Looking For, Plc, and Struggling. Common discussion themes are Advice Requests and Ideas. Product recommendations often mention plc, laptop, and hmi.
Community Topics
Community Features
This community has a forum
Subreddit Analysis
via GummySearchMember growth over time
All time (yearly)
- 2014: 1K members
- 2015: 1K members
- 2016: 1K members
- 2017: 2K members
- 2020: 19K members
- 2021: 12K members
- 2023: 34K members
- 2024: 23K members
- 2025: 27K members
- 2026: 17K members
Past year (monthly)
- Sep: 2K members
- Oct: 2K members
- Nov: 2K members
- Dec: 2K members
- Jan: 2K members
- Feb: 2K members
- Mar: 2K members
- Apr: 2K members
- May: 2K members
- Jun: 2K members
- Jul: 2K members
- Aug: 1K members
Themes
- Advice Requests8 posts in the past month
- Looking for some job advice
- Has AI actually changed the way you work in industrial automation or is it still mostly hype?
- Has AI actually become useful in industrial automation or are we still a long way from that?
#18Advice RequestsLooking for some job advice · Has AI actually changed the way you work in industrial automation or is it still mostly hype? · Has AI actually become useful in industrial automation or are we still a long way from that? - Ideas1 post in the past month
- Low-cost wired sensor ideas for unit counting on a manual assembly line?
#21IdeasLow-cost wired sensor ideas for unit counting on a manual assembly line? - Solution Requests1 post in the past month
- Need Help Troubleshooting
#31Solution RequestsNeed Help Troubleshooting - Pain & Anger1 post in the past month
- Our industry is in trouble
#41Pain & AngerOur industry is in trouble - Opportunities1 post in the past month
- Remote Jop opportunity in Automation
#51OpportunitiesRemote Jop opportunity in Automation
Topics
- Looking For85 posts in the past month#185Looking For
- Plc56 posts in the past month
- Electrician looking to get into plc
- PLC randomly losing program?
- Siemens PLC Ktp900 Basic boot loader stuck
#256PlcElectrician looking to get into plc · PLC randomly losing program? · Siemens PLC Ktp900 Basic boot loader stuck - Struggling30 posts in the past month#330Struggling
- Struggling With17 posts in the past month#417Struggling With
- Struggling To17 posts in the past month#517Struggling To
Flair
- Off topic1 post in the past month
- Our industry is in trouble
#11Off topicOur industry is in trouble
Product recommendations
- plc11 posts in the past month
- Best 500/600$ PC for PLC programming?
- What is best Family and Brand of PLC to use in a new automated factory with IIOT in mind? Read Comment for Background.
- What is best Family and Brand of PLC to use in a new automated factory with IIOT in mind? Read Comment for Background.
#111plcBest 500/600$ PC for PLC programming? · What is best Family and Brand of PLC to use in a new automated factory with IIOT in mind? Read Comment for Background. · What is best Family and Brand of PLC to use in a new automated factory with IIOT in mind? Read Comment for Background. - laptop5 posts in the past month
- Best portable "Desk" for laptops?
- Need advice on the best laptop for student
- Need advice on the best laptop for student
#25laptopBest portable "Desk" for laptops? · Need advice on the best laptop for student · Need advice on the best laptop for student - hmi5 posts in the past month
- What are the best web based HMI solutions out there for small systems?
- Recommended Free HMI/SCADA Platform for Proof of Concept?
- Recommended Free HMI/SCADA Platform for Proof of Concept?
#35hmiWhat are the best web based HMI solutions out there for small systems? · Recommended Free HMI/SCADA Platform for Proof of Concept? · Recommended Free HMI/SCADA Platform for Proof of Concept? - courses5 posts in the past month
- Please recommend some courses or learning materials
- recommend me a course for abb automation builder.
- Please I am a beginner in automation. Please I need a guide in this journey or a roadmap that will be of great help in this journey... Please this is what I love and want to be a great person in this. Please recommend books,videos, courses and all. God bless you
#45coursesPlease recommend some courses or learning materials · recommend me a course for abb automation builder. · Please I am a beginner in automation. Please I need a guide in this journey or a roadmap that will be of great help in this journey... Please this is what I love and want to be a great person in this. Please recommend books,videos, courses and all. God bless you - label makers2 posts in the past month
- Please recommend label makers for wiring/tubing
- Please recommend label makers for wiring/tubing
#52label makersPlease recommend label makers for wiring/tubing · Please recommend label makers for wiring/tubing
Community Reviews
Frequently asked questions
- Who is r/PLC for?
- Best for Hardware and Robotics Enthusiasts enthusiasts looking for a Reddit-based community with forum discussion.
- Is r/PLC free to join?
- This listing is not marked as paid-only. Access rules and any fees are decided by the community.
- How many members does r/PLC have?
- Roughly 140K members, based on figures reported by the community or its host. Member counts are approximate and change over time.
- What platform is r/PLC on?
- r/PLC runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
- What topics does r/PLC cover?
- On the Hive Index, r/PLC is organized under Hardware, Robotics Enthusiasts.
- How do I join r/PLC?
- You can join r/PLC by clicking this link, or pressing the "Go to community" button above.
- What are the Hardware communities like?
- Communities for hardware engineers, electronics hobbyists, and embedded systems developers. Discord and Reddit host communities for Arduino, Raspberry Pi, PCB design, and DIY electronics, alongside more professional spaces for engineers working on commercial hardware products.
Monthly Stats
- 27
- Views /mo (+200%)
- 27
- Visitors /mo (+200%)
- 1
- Referrals /mo
Similar Communities
12Arduino Forum
The official Arduino community forum where makers, students, and professionals discuss Arduino projects, get help with code, and share ideas about hardware and electronics.
Raspberry Pi Forums
The official Raspberry Pi community forums. Get help, share projects, and discuss everything related to the Raspberry Pi single-board computers and the broader maker ecosystem.
Robotics and Automation Community
A Facebook group for hobbyists, students, and professionals interested in robotics and automation. Share projects, ask questions, and discuss the latest in robot technology.
r/FRC
Reddit's home for the FIRST Robotics Competition!
r/robotics
A subreddit for discussing all types of robotics. If you are a hobbyist, student, or professional, this is the place for you!
r/Battlebots
/r/battlebots is a reddit community for fans of robot combat. We welcome those with a casual interest in television shows as well as the enthusiast community. Events of interest include Battlebots, Robot Wars, Bugglebots, Robogames, Fighting My Bots (FMB), King of Bots (KOB) and Robolahing This is an independent unofficial fan community. It does not represent any brand.