Rockwell Automation 1203-SSS Smart Self-powered Serial Converter - Manual (Page 48)

Glossary-4
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/DPI 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,”
“converter,” “DPI peripheral,” or “SCANport peripheral.”
Status Indicators
Status indicators are LEDs that are used to report the status of a device.
There are three status indicators on the converter.
T
Type 0/Type 1/Type 2 Control
When transmitting I/O, the adapter can use different types of messages
for control. The Type 0, Type 1, and Type 2 events help Allen-Bradley
personnel identify the type of messages that an adapter is using.
X
Xmodem
Developed by Ward Christensen in 1978, Xmodem is a protocol used to
transfer data. You can use the Xmodem protocol to flash the firmware in
the serial converter or a device connected to it.
Z
Zero Data
When communications are disrupted (e.g., serial cable is disconnected),
the converter and product can respond with zero data. Zero data results
in the product receiving zero as values for command data. If the product
was in RUN mode and using the Reference from the converter, it will
stay in run mode but at zero Reference.