IAI America XSEL-S - Manual (Page 15)

9
IA Net
XSEL-R/S
What’s IA Net
IA Net is a function that enables the connection of multiple units (64 units max.) of XSEL-R/S related
controllers *1 and operate them while monitoring the conditions of each controller via the shared
memory.
Remote I/O is accomplished through the use of extension I/O units. The input and output of an
extension I/O unit can be referenced by all the XSEL controllers.
Also, IA Net allows for a single point of connection for the XSEL software, allowing access to all
connected controller via a single network connection.
*1 XSEL-R/S related controllers = XSEL-R/S/RX/SX/RXD/SXD
xNetwork Image
xImage of Connection
XSEL
IA Net cable
XSEL XSEL
Terminal Resistance Terminal Resistance
· · · · ·
· · · · ·
IA Net board IA Net board IA Net board
Ɣ IA Net is available for connection of 64 stations * 1 at the maximum
Ɣ One unit of XSEL occupies four stations at the maximum (including number of stations on
extension I/O unit)
Ɣ An extension I/O unit occupies four, and may contain up to four slots of I/O.
Ɣ Each of the four output slots of an extension I/O unit may be assigned to different XSEL
controllers. Only one XSEL controller may control the output of any one given slot at a
time.
Ɣ The input and output of an extension I/O unit can be referenced by all the XSEL controllers
*1 : Station: indicates a four word memory allocation of shared memory area.
Shared
Memory
(256
Words)
Extension I/O unit
Writing
(Output)
Writing
(Output)
Writing
(Output)
Reading/Writing
(I/O)