Allen-Bradley 1203-SSS User Manual page 38

Glossary-2
H
Hold Last State
When communications are disrupted (e.g., serial cable is disconnected),
the converter and SCANport product can respond by holding last state.
Hold last state results in the SCANport product receiving the last data
received via the DF1 connection before the disruption. If the SCANport
product was in RUN mode and using the reference from the converter, it
will continue to run at the same reference.
S
SCANport
A standard peripheral communications interface for various
Allen-Bradley drives and power products.
SCANport Peripheral
A device that provides an interface between SCANport and a network. It
is often referred to as an adapter. For example, the serial converter is a
SCANport peripheral.
SCANport Product
A device that uses the SCANport communications interface to
communicate with one or more peripheral devices. For example, a motor
drive such as a 1336 PLUS II is a SCANport product. In this manual, a
SCANport product is also referred to as "product."
Serial Converter
The serial converter provides an electronic communications interface
between any Allen-Bradley SCANport product and a computer with an
RS-232 port. This converter uses a full-duplex RS-232 DF1 protocol.
The serial converter may also be referred to as "1203-SSS converter,"
"adapter," "converter," or "SCANport peripheral."
Z
Zero Data
When communications are disrupted (e.g., serial cable is disconnected),
the converter and SCANport product can respond with zero data. Zero
data results in the SCANport product receiving zero as values for
command data. If the SCANport product was in RUN mode and using
the reference from the converter, it will stay in run mode but at zero
reference.