sepa - setp
- separator
- SEQ
- sequence
- sequence control block
- sequence control function
- sequence faceplate block
- sequence message
- sequence message request
- sequence of events
- sequence of events recorder
- sequence skip-down
- sequence skip-in
- sequence skip-up
- sequence step
- sequence table
- sequential function chart
- SER
- service base
- service breaking capacity
- service request enable register
