Rockwell Automation T80020 Application Note Diagnostic Procedures - Manual (Page 40)

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AN-T80020 Diagnostics Procedure
Issue 12 Feb 11 AN-T80020 40
OVI, OVC Overcurrent trip
OVP Over Potential (also OVV)
OVV Overvoltage trip (also OVP)
PIC Programmable Intelligent Computer – microcontroller chip used here for channel control
PRM Programmable Ramp Module(?) – for test patterns
RAM Random Access Memory
REG Regulated
RIO Real Time I/O (operating system)
Semaphore Communication token
SHUTDOWN A slice has switched all its I/O to the configured shutdown state
SSL Smart Slot Link
SYNC Synchronisation
BOOT CODE Module in boot state and not running module firmware
VMON Voltage Monitor
Vpp Flash memory program voltage