IAI America XSEL-S - Manual (Page 39)

Chapter 3 Operation (Construction for Network)
33
IA Net
XSEL-R/S
[2] Guideline of I/O Communication Extension I/O Unit
The diagram below shows the flow of PIO signals between one unit of XSEL and one unit of the
extension I/O unit.
With IA Net, it is possible for multiple XSEL controllers to turn ON/OFF PIO boards mounted in
the the slots of an extension I/O unit. Each slot of an extension I/O unit is an IA Net station.
One XSEL controller can occupy some, or all, of the extension I/O unit stations (slots). Another
XSEL controller can also occupy some extension I/O unit stations. Any given XSEL can only
turn ON/OFF the outputs of an extension I/O unit PIO board for the extension unit I/O stations
that it occupies. The outputs of slots other than what is occupied cannot be turned ON/OFF.
Also the condition of ON/OFF of the input and output on an extension unit can be referenced
(read) by all the XSEL controllers connected to the IA Net network.
4015 to 4000 → No.0 →
4031 to 4016 → No.1 →
4047 to 4032 → No.2 →
No.3
4063 to 4048 → No.4 →
4079 to 4064 → No.5 →
No.6
No.7
No.8
No.9
No.10
No.11
No.12
No.13
No.14
No.15
1015 to 1000 ← No.16 ←
1031 to 1016 ← No.17 ←
1047 to 1032 ← No.18 ←
No.19
1063 to 1048 ← No.20 ←
No.21
No.22
No.23
No.24
No.25
No.26
St.
No.5
St.
No.0
St.
No.1
St.
No.2
I/O Slot 1
DO=48 Points
I/O Slot 1
DI=48 Points
I/O Slot 2
I/O Slot 2 DO=16Points
DO=32 Points
St.
No.3
St.
No.4
Occupied stations for X-SEL 1
Occupied stations for Extension I/O Unit
Extension Input Port No.
Extension Output Port No.
X-SEL
Top Station
No.0
Extension I/O Unit
Unit number No. 1
(Top St. No.4)
IA Net
Shared Memory
<Writing>
<Writing>
<Writing>
<Writing> <Reading>
<Reading>
<Reading>