Campbell Scientific CR3000 Micrologger - Manual (Page 457)

Section 11. Glossary
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FP2
Two‐byte floating‐point data type. Default CR3000 data type for stored
data. While IEEE four‐byte floating point is used for variables and
internal calculations, FP2 is adequate for most stored data. FP2 provides
three or four significant digits of resolution, and requires half the
memory as IEEE4.
FTP
File Transfer Protocol. A TCP/IP application protocol.
full duplex
Systems allow communications simultaneously in both directions.
garbage
The refuse of the data communication world. When data are sent or
received incorrectly (there are numerous reasons why this happens), a
string of invalid, meaningless characters (garbage) often results. Two
common causes are: 1) a baud‐rate mismatch and 2) synchronous data
being sent to an asynchronous device and vice versa.
global variable
A variable available for use throughout a CRBasic program. The term is
usually used in connection with subroutines, differentiating global
variables (those declared using Public or Dim) from local variables,
which are declared in the Sub() and Function() instructions.
ground
Being or related to an electrical potential of 0 Volts.
half duplex
Systems allow bi‐directional communications, but not simultaneously.
handshake, handshaking
The exchange of predetermined information between two devices to
assure each that it is connected to the other. When not used as a clock
line, the CLK/HS (pin 7) line in the datalogger CS I/O port is primarily
used to detect the presence or absence of peripherals.
Hello Exchange
The process of verifying a node as a neighbor.