We recently purchased a custom made packaging machine and I’m planning on making several minor additions and modifications to the machine. I’m not a machine maker and am brand new to automation, Opto22 products and custom machinery. I have purchased a SNAP PAC system and am ready to create my schematics and wiring diagrams for the modifications I want to make. I’m not a “hardware guy” and have very little experience with the software tools commonly used. I’m wondering what software applications are commonly used to design the schematics and subsequent wiring diagrams for automated machinery? AutoCAD is out of my budget, I’m looking for something more entry level but with enough features to be useful. I have used Eagle CAD a few times but it seems more tailored to PCB design than automation and control systems.
So short version of question: What software do you recommend for circuit design?