Built-In; Radio Frequency Interference - Emerson FloBoss 103 Instruction Manual

Protocol A set of standards that enables communication or file transfers between two
computers. Protocol parameters include baud rate, parity, data bits, stop bit, and the
type of duplex.
PSTN
Public Switched Telephone Network.
PT Process Temperature.
PTT Push-to-Talk signal.
Pulse Transient variation of a signal whose value is normally constant.
Pulse Interface
A module that provides line pressure, auxiliary pressure, and pulse counts to a ROC.
module
PV Process Variable or Process Value.
R
Rack A row of slots on a ROC into which I/O modules can be plugged. Racks are given a
letter to physically identify the location of an I/O channel (such as "A" for the first rack).
Built-in I/O channels are assigned a rack identifier of "A" while diagnostic I/O channels
are considered to be in "E" rack.
RAM Random Access Memory. RAM is used to store history, data, most user programs, and
additional configuration data.
RBX Report-by-exception. RBX always refers to Spontaneous RBX in which the ROC
contacts the host to report an alarm condition.
RR Results Register; stores the Signal Value Analog (SVA).
RFI

Radio Frequency Interference.

RI
Ring Indicator modem communications signal.
ROC Remote Operations Controller microprocessor-based unit that provides remote
monitoring and control.
ROCLINK 800 Microsoft® Windows®-based software used to configure functionality in ROC units.
ROM
Read-only memory. Typically used to store firmware. Flash memory.
Rotary Meter A positive displacement meter used to measure flow rate, also known as a Roots
meter.
RTC Real-Time Clock.
RTD
Resistance Temperature Detector.
RTS Ready to Send modem communications signal.
RTU Remote Terminal Unit.
RTV Room Temperature Vulcanizing, typically a sealant or caulk such as silicon rubber.
RS-232
Serial Communications Protocol using three or more signal lines, intended for short
distances. Also referred to as the EIA-232 standard.
RS-422 Serial Communications Protocol using four signal lines. Also referred to as the EIA-422
standard.
RS-485 Serial Communications Protocol requiring only two signal lines. Can allow up to 32
devices to be connected together in a daisy-chained fashion. Also referred to as the
EIA-485 standard.
RX or RXD Received Data communications signal.
S
Scientific Apparatus Maker's Association.
SAMA
SCADA
Supervisory control and data acquisition; referring to a computer system that monitors
and controls oil and gas pipeline systems.
Revised August-2017
FloBoss 103/104 Instruction Manual
Glossary A-7