IAI R-unit RSEL, Instruction Manual, Page: 169 / 844

Chapter 3 Specifications for each unit
3.5 SCON Extension Unit, PIO/SIO/SCON Extension Unit, PIO Unit
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ME0392-4C
The SCON extension unit and the SCON-CB controller are connected with a dedicated cable
(model: CB-RE-
CTL□□□). When connecting two or more SCON -CB controllers, connect the
SCON-CB units together with a dedicated cable. Up to 16 axes can be controlled by combining
with a driver unit.
* In RSEL System, it is available to connect only either the SCON extension units or
PIO/SIO/SCON extension units.
[PIO/SIO/SCON Extension Unit]
PIO/SIO/SCON extension unit is equipped with a connector to link SCON-CB controller as well
as SCON extension unit does.
It is also equipped with the parallel I/O connector with 16 points of input and 16 points of output
and RS-485 serial communication connector.
PIO/SIO/SCON extension units are also available to use by allocating on the right of the SEL unit.
[PIO unit 】
PIO unit is equipped with the parallel I/O connector with 16 points of input and 16 points of output.
Expansion is available up to eight at the maximum (144 points of input and 144 points of output)
including PIO/SIO/SCON extension units.
RSEL system
SCON Extension Unit or
PIO/SIO/SCON Extension Unit (*)
Communication
connector for RCON/RSEL
connection
SCON-CB controller
Connection cable CB-RE- CTL□□□
Actuator
Cable for each actuator
Refer to SCON-CB
instruction manual
Terminal
connector
RCON-EXT-TR
Top : OUT
Bottom : IN
3.5 SCON Extension Unit, PIO/SIO/SCON Extension Unit, PIO Unit
ME0392-4C
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 
Parameter Setting When PIO/SIO/SCON Extension Unit and PIO Unit Used
The setting in I/O Parameter No. 186 “Number of Connected Option Units” is 0 at the delivery
from our production plant in RSEL System
When PIO input and output are to be used with PIO/SIO/SCON extension units or PIO units
connected, set the total number of PIO/SIO/SCON extension units and PIO units connected in
the parameter.
[Number of Connected Option Units (I/O Parameter No. 186)]
No. Name Unit Input range
Default initial value
setting
186 Number of Connected Option Units - 0 ~ 8 0