You can get an AB Micro800 PLC for cheap on Ebay. It is powered at 24V DC
It uses the CCW programming software that can be installed for free, it is a modern software with named variables/tags and not like the old S7-300/400.
It uses the CCW programming software that can be installed for free, it is a modern software with named variables/tags and not like the old S7-300/400.