IAI America S-SEL-E - Manual (Page 216)

Page 211
 Controller connected to a PC
(2) SEL NET Functions
To achieve distributed control of a single production line using multiple controllers, usually I/O (input/output) signals are
relayed to synchronize the individual controllers. But the SEL NET network does not use I/O signals. Instead, data is
relayed between the controllers simply by connecting the controllers with the SEL NET cable. Data transmission is easily
managed with SEL language programming. SEL NET allows you to build a simple system, a multiple controller network or
a large scale network with high-level computers linked in a LAN network as described on the previous page.
The SEL NET option can be specified in two ways. It can be part of the main CPU module of the controller (as shown below
and on page 209). This version uses a Nippon Molex 6 pin connector (not available for the Super SEL EU controller).
‚ Controller connected to another controller
ƒ Multiple controllers connected
Chapter 5. Option
The second version is installed in the I/O expansion module. (See figures 1, 2, 3, 4 and 5 for various possible configura-
tions) This version uses a standard 9 pin D-sub connector and is easily installed in the field. The cover to the I/O
expansion module must be modified or replaced to allow access to the 9 pin connector.