ZETRON 1708 - Glossary of Terms

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GLOSSARY
AC power module
The module that connects a device to an AC power source.
Accumulator
See analog input accumulator.
Acquisition timeout
The timeout for the first two steps of radio transmission:
radio contention via the TXREQ signal and channel busy
detect via the COR signal.
Address
See module address.
Analog input
accumulator
Analog input accumulators keep a running total of the
analog input value over time. They are often used to keep a
running total of some flow through a system.
Autopolling
Data communications strategy where the SCADA master
automatically sends queries for status to the RTUs.
Baud Rate
The rate of signal transitions for a given unit of time.
Binary format
A format to transfer information, generally consisting of
ones and zeros. This is not intended to be a human-readable
form.
Channel Busy Delay
The amount of time the radio channel must be available
before the device will key up and transmit data.
Coil
From relay coil, now indicates a digital or relay output.
COM port
RS-232 serial communications port on a PC or
Controller/RTU Core module.
Communications
See direct serial, phone modem, radio interface, or
dedicated leased lines.
Communications failure
A breakdown in system communications. See exception
reporting communications failure, polling communications
failure, or RS-232 watchdog.
Compile
To translate a computer program expressed in a high-order
language into its machine language equivalent.