I/O Number Structure And Scope Of Allocation - Hitachi S10VE User Manual

9. Settings

9.2 I/O number structure and scope of allocation

An I/O number identifies the I/O type of a PI/O module and the slot in which it is installed.
Each I/O number is made up of five alphanumeric characters. The following figure explains the meaning of each
digit:
■ Structure of I/O number
(X: Input, Y: Output)
Note: I/O numbers are within the range from 0000 to 0FFF. However, station
numbers are limited to a range from 00 to 7F.
■ Scope of allocation
PI/O unit
PS ST PI/O
（RI/O）
PI/O unit
PS ST PI/O
（RI/O）
Max. 12 units per line
Number of I/O Range of station numbers to be set
slots on PI/O unit
mount base
2
4
8
I/O type:
CPU unit
PS RI/O-IF
RI/O-1
(line 1)
#
RI/O-1 RI/O-2
00 to 3E 40 to 7E
00 to 3C 40 to 7C
00 to 38 40 to 78
0
(X0000 to X0FFF)
(Y0000 to Y0FFF)
When the PI/O module is installed in the CPU unit, the
CPU PI/O
CPU unit is assigned a station number of 00 and an I/O
number from 0000.
However, the I/O numbers that correspond to the first
slot (0) are invalid.
RI/O-2
(line 2)
PS
PS
Max. 12 units per line
#: When a PI/O module is installed in the CPU unit, the CPU unit
will have the station number 00. Set the station numbers of
PI/O units connected to RI/O-1 (line 1) so as not to conflict
with the station number of the CPU unit.
9-4
Station number
(00 to 7F)
I/O number
PI/O unit
ST PI/O
（RI/O）
PI/O unit
ST PI/O
（RI/O）