What is .PLC file extension?
Program source code file created with Sunbelt PL/B; written in the PL/B programming language, a high-level, English-like language optimized for screen, file, and string manipulation.
The PL/B language was developed by Datapoint Corporation in 1972 and was previously named DATABUS.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.