Hardy HI 3010 Filler/Dispenser Controller - Manual (Page 123)

109 Glossary of Terms
NUMBER OF
READINGS PER
AVERAGE The number of weight readings used to compute the displayed weight.
ODD A parity configuration.
OPTION A device not supplied with a standard instrument.
OPTION SLOT A location used to install an option card.
PARITY A binary digit error correction appended to an array of bits to make the sum of all the
bits always odd or always even. The quality of being either odd or even. The fact that
all numbers have a parity is commonly used in data communications to ensure the
validity of data.
POUNDS A unit of mass in the Avoirdupois System. Equal to 16 ounces or 0.4536 kilograms.
POP Short for Post Office Protocol, a protocol used to retrieve e-mail from a mail server.
PREACT The number of units above or below the set point value of which the relay will trip. Use
as an “in flight” compensation value.
PREVIOUS KEY A key used to step back through menus.
PROMPTS Instructions or options presented in a menu by the instrument.
PROTOCOL Network protocols are standards that allow computers to communicate. A protocol
defines how computers identify one another on a network, the form that the data
should take in transit, and how this information is processed once it reaches its final
destination.
RAM Random-Access-Memory. Read/write memory out of which the microprocessor can
both write and read data.
RATE OF CHANGE
(ROC) A measure of the rate at which weight is changing. For example: If 100 pounds were
dispensed in 1 minute, the rate of change (ROC) would be 100 lb/minute.
REPEATABILITY The maximum difference between readings for repeated readings under identical con-
ditions. (Also called reproducibility)
RESOLUTION Resolution is the value of the finest division of the scale.
ROM Read-Only-Memory. This permanent, non-volatile memory gives the processor
instructions and cannot be altered.
RTS Request to send an RS-232C level, signaling a readiness to send.
RXD Received data at a serial port. Accepts RS-232C data signals.
SCALE CAPACITY The maximum amount of weight the scale is capable of supporting. (Live load plus
dead load).
SECURE MEMORY
MODULE (SMM) The Secure Memory Module stores and protects vital information from corruption. The
SMM also allows the transference of data from one instrument to another with no re-
calibration ore re-configuration necessary.