TM 5-3895-374-24-1RTB-Removable Terminal BlockSignal Delay- For inputs, the response time required to transmit the circuit status from thefield wiring to the digital logic For outputs, the time required to transmit the circuit status fromdigital logic to the output winingSinking- A term used to describe current flow between an 1/0 device and SLC I/O circuit-typically, a sinking device or circuit provides a path to ground, low, or negative side of powersupplySinking/Sourcing- Describes a current signal flow relationship between field input andoutput devices In a control system and their power supply. Sourcing I/O modules supply (orsource) current to sinking field devices. Sinking I/O modules receive (or sink) current fromsourcing field devicesSourcing-A term used to describe current flow between an I/O device and SLC 1/0 circuit-typically, a sourcing device or circuit provides a path to the source, high, or positive side ofpower supplySurge Current Per Point-The maximum amplitude arid duration (pulse) of current allowedfor a given period of time and temperatureSurge Suppressor-A device used to absorb voltage transients created by energizing aninductive load to reduce electrical noise or to protect the output circuit For example, an R-Cnetwork, MOV (metal oxide varistor) or diodeToken-The logical right to initiate communications In a multi-master network a single tokenis passed between Initiators to make sure two nodes do not transmit at the same timeUVPROM-An Ultra-Violet light erasable Programmable Read Only Memory module used toback-up, store, or transfer SLC 500 programs. The SLC 5/01 and 5/02 can only read from aUVPROM. An external PROM programmer is used to program (write to) the deviceVoltage Category-The nominal voltage used to describe the moduleWatts Per Point-The maximum heat dissipation that can occur In each field wiring pointwhen energized(page 3-466)Glossary
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