FloBoss 407 Instruction Manual
G-4 Rev 5/00
MPU — Micro-processor Unit.
MVS — Multi-Variable Sensor. The MVS provides differential pressure, static pressure, and
temperature inputs to the FloBoss 407 for orifice flow calculation.
mV — Millivolts, or 0.001 volt.
mW — Milliwatts, or 0.001 watt.
N
NEC — National Electrical Code.
NEMA — National Electrical Manufacturer’s Association.
O
OH — Off-Hook modem communications signal.
Off-line — Accomplished while the target device is not connected (by a communications link). For
example, off-line configuration is configuring a ROC/FloBoss in a electronic file that is later
loaded into the ROC/FloBoss.
Ohms — Units of electrical resistance.
On-line — Accomplished while connected (by a communications link) to the target device. For
example, on-line configuration is configuring a ROC/FloBoss while connected to it, so that
current parameter values are viewed and new values can be loaded immediately.
OP — Operator Port; see LOI.
Opcode — Type of message protocol used by the ROC/FloBoss to communicate with the
configuration software, as well as host computers with ROC driver software.
P, Q
Parameter — A property of a point that typically can be configured or set. For example, the Point
Tag ID is a parameter of an Analog Input point. Parameters are normally edited by using
configuration software running on a PC.
Pf — Flowing pressure.
PC — Personal computer.
P/DP — Pressure/Differential Pressure.
PI — Pulse Input.
PID — Proportional, Integral, and Derivative feedback control.
PIT — Periodic Timer Interrupt.
Point — Software-oriented term for an I/O channel or some other function, such as a flow
calculation. Points are defined by a collection of parameters.
Point Number — The rack and number of an I/O point as installed in the ROC or FloBoss.
Point Type — The point type attribute defines the database point to be one of the possible types of
points available to the system. The point type determines the basic functions of a point.
PRI — Primary PID control loop.
PSTN — Public switched telephone network.
PT — Process Temperature.
PTT — Push-to-talk signal.
Pulse — Transient variation of a signal whose value is normally constant.
PV — Process variable or process value.
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