| Subject | English | Thesaurus |
| abbr. | logic controller | logical controller (ssn) |
| progr. | major feature of programmable logic controllers | major feature of PLC's (ssn) |
| plast., abbr. | Programable Logic Controller | PLC |
| IT, abbr. | Programmable Logic Controller | PLC (IC) |
| abbr., file.ext. | Programmable Logic Controller | PLC |
| abbr., inet. | Sensor Programmable Logic Controller | SPLC (inn) |
| comp., abbr. | Small Logic Controller | SLC |